1 Introduction |
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1 | (10) |
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1 | (1) |
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1.2 Research Significance |
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2 | (2) |
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4 | (4) |
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8 | (3) |
2 Mathematical Fundamentals |
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11 | (30) |
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2.1 Regular Perturbation Method |
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11 | (2) |
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2.2 Singular Perturbation Method |
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13 | (3) |
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2.3 Spectral Decomposition Method |
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16 | (3) |
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16 | (1) |
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2.3.2 Spectral Decomposition Theorem |
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16 | (1) |
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17 | (2) |
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19 | (1) |
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2.4 Pseudospectral Method |
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19 | (14) |
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2.4.1 Introduction of Method |
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19 | (4) |
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2.4.2 Pseudospectral Discrete Process |
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23 | (10) |
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2.5 Linear Gauss Pseudospectral Model Predictive Control |
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33 | (5) |
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38 | (3) |
3 Mathematical Modeling for Hypersonic Glide Problem |
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41 | (12) |
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3.1 The Coordinate System Adopted in This Book |
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41 | (2) |
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3.1.1 Geocentric Inertial Coordinate System (I) |
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41 | (1) |
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3.1.2 Geographic Coordinate System (T) |
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41 | (1) |
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3.1.3 Orientation Coordinate System (0) |
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42 | (1) |
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3.1.4 Velocity Coordinate System (V) |
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42 | (1) |
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3.1.5 Half-Velocity Coordinate System (H) |
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42 | (1) |
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3.1.6 Body Coordinate System (B) |
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43 | (1) |
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3.2 Transformation Between Coordinate Systems |
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43 | (2) |
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3.2.1 Transformation Between the Orientation Coordinate System and the Half-Velocity Coordinate System |
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43 | (1) |
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3.2.2 Transformation Between the Velocity Coordinate System and the Half-Velocity Coordinate System |
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43 | (1) |
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3.2.3 Transformation Between the Velocity Coordinate System and the Body Coordinate System |
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44 | (1) |
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3.2.4 Transformation Between the Body Coordinate System and the Half-Velocity Coordinate System |
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45 | (1) |
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3.3 Dynamic Equations of Hypersonic Vehicle in Half-Velocity Coordinate System |
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45 | (8) |
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3.3.1 Dynamics Equations of the Center of Mass in Half-Velocity Coordinate System |
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45 | (3) |
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3.3.2 The Dynamic Equations of the Center of Mass of the Vehicle |
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48 | (1) |
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3.3.3 Dynamic Equations of Hypersonic Gliding Vehicle Based on BIT Control |
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48 | (1) |
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3.3.4 Dynamic Equations of Hypersonic Vehicle in Vertical Plane |
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49 | (1) |
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50 | (1) |
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50 | (1) |
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3.3.7 The Stagnation Point Heat Flow, Overload and Dynamic Pressure |
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50 | (3) |
4 Mathematical Description of Glide-Trajectory Optimization Problem |
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53 | (12) |
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4.1 Mathematical Description for Optimal Control Problem |
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53 | (8) |
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4.1.1 Performance Index of Optimal Control Problem |
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53 | (1) |
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4.1.2 Description of Optimal Control Problem |
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54 | (1) |
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4.1.3 The Minimum Principle |
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55 | (1) |
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4.1.4 Final Value Performance Index of Time-Invariant Systems |
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56 | (1) |
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4.1.5 Integral Performance Index of Time-Invariant Systems |
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57 | (1) |
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4.1.6 Optimal Control Problem with Inequality Constraints |
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58 | (1) |
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4.1.7 Methods for Solving Optimal Control Problems |
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58 | (3) |
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4.2 Mathematical Description of Optimal Control Problem for Hypersonic Vehicle Entry Glide |
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61 | (4) |
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4.2.1 Maximum Final Speed Problem |
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61 | (1) |
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4.2.2 Maximum Range Problem |
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62 | (1) |
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4.2.3 Shortest Time Problem |
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62 | (1) |
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4.2.4 Optimal Trajectory Problem with Heating Rate Constraint |
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63 | (1) |
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4.2.5 Optimal Trajectory Problem with Heating Rate and Load Factor Constraints |
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64 | (1) |
5 Indirect Approach to the Optimal Glide Trajectory Problem |
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65 | (38) |
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5.1 Combined Optimization Strategy for Solving the Optimal Gliding Trajectory of Hypersonic Aircraft |
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67 | (7) |
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5.1.1 Mathematical Model of Hypersonic Gliding |
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67 | (1) |
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5.1.2 Necessary Conditions for Optimal Gliding Trajectory |
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68 | (1) |
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5.1.3 Solving Two-Point Boundary Value Problem by Combination Optimization Strategy |
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69 | (1) |
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5.1.4 Numerical Calculation Results |
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70 | (3) |
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73 | (1) |
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5.2 Trajectory Optimization of Transition Section of Gliding Hypersonic Flight Vehicle |
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74 | (10) |
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5.2.1 Aerodynamic Data for the Transition Section |
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74 | (1) |
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5.2.2 Unconstrained Trajectory of Maximum Terminal Velocity |
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75 | (1) |
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5.2.3 Heat Flow Constrained Trajectory of Maximum Terminal Velocity |
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76 | (1) |
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5.2.4 Solving the Two-Point Boundary Value Problem for the Transition Section |
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77 | (1) |
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5.2.5 Optimizing the Transition Trajectory with Direct Method |
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77 | (1) |
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5.2.6 Steps for Solving the Optimal Transition Trajectory |
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78 | (3) |
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5.2.7 Transitional Trajectory Obtained by Indirect Method |
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81 | (3) |
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5.3 The Maximum Range Gliding Trajectory of the Hypersonic Aircraft |
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84 | (17) |
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5.3.1 Guess Initial Values for Optimal Control Problem by Direct Method |
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84 | (5) |
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5.3.2 Indirect Method for Solving Optimal Control Problems |
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89 | (5) |
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5.3.3 The Maximum Range Gliding Trajectory of the Hypersonic Aircraft |
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94 | (7) |
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101 | (2) |
6 Direct Method for Gliding Trajectory Optimization Problem |
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103 | (22) |
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6.1 Direct Method for Solving Optimal Control Problems |
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103 | (1) |
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6.2 Direct Shooting Method |
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104 | (3) |
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6.2.1 Direct Multiple Shooting Method |
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104 | (1) |
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6.2.2 Direct Method of Discrete Control |
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105 | (1) |
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6.2.3 Gradual Subdividing Optimization Strategy |
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106 | (1) |
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6.3 Direct Collocation Method |
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107 | (4) |
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6.3.1 General Form of Direct Collocation Method |
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107 | (1) |
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6.3.2 Direct Transcription |
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108 | (1) |
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6.3.3 Implicit Integral Method |
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109 | (1) |
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6.3.4 Solving Optimal Trajectory Problems with NLP |
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110 | (1) |
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6.4 Direct Collocating Method for Trajectory with Maximum Gliding Cross Range of Hypersonic Aircraft |
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111 | (8) |
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111 | (2) |
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6.4.2 Re-entry Flight Control Law with Given Angle of Attack Profile |
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113 | (1) |
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6.4.3 Solution of Maximum Cross Range Problem by Direct Collocation Method |
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113 | (3) |
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6.4.4 Optimization Example |
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116 | (2) |
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118 | (1) |
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6.5 Pseudo-spectral Method for the Optimal Trajectory of the Hypersonic Vehicle with the Longest Cross-Range |
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119 | (6) |
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6.5.1 Introduction of Pseudo-spectral Method |
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119 | (3) |
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6.5.2 Optimization Examples and Results |
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122 | (3) |
7 Concept of Steady Glide Reentry Trajectory and Stability of Its Regular Perturbation Solutions |
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125 | (24) |
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125 | (1) |
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126 | (1) |
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7.3 Definition of the Steady Glide Trajectory |
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127 | (1) |
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7.4 Effects of Control Variable on SGT |
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128 | (1) |
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7.5 Effects of Initial Value on SGT |
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129 | (1) |
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7.6 Analytical Solution of SGT |
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129 | (6) |
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7.6.1 Altitude Dynamic Differential Equation |
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129 | (2) |
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7.6.2 Analytical Steady Glide Altitude |
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131 | (2) |
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133 | (1) |
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7.6.4 Analytical Solutions of Flight Path Angle and Vertical Acceleration |
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134 | (1) |
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7.7 Dynamic Characteristics of SGT |
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135 | (5) |
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135 | (2) |
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7.7.2 Natural Frequency and Damping |
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137 | (3) |
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7.8 Feedback Control of SGT |
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140 | (7) |
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140 | (4) |
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7.8.2 Fixed-Damping Differential Feedback Method |
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144 | (3) |
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147 | (1) |
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147 | (2) |
8 Analytical Solutions of Steady Glide Reentry Trajectory in Three Dimensions and Their Application to Trajectory Planning |
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149 | (18) |
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149 | (1) |
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150 | (3) |
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8.2.1 Definition of Coordinate Frame |
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150 | (1) |
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8.2.2 Kinematic Equations |
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150 | (2) |
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8.2.3 Decoupling of Equations |
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152 | (1) |
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8.3 Analytical Solution of Glide Trajectory |
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153 | (4) |
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8.3.1 Analytical Solution of Altitude |
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153 | (1) |
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8.3.2 Analytical Solution of Range |
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154 | (1) |
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8.3.3 Analytical Solution of Heading Angle |
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154 | (1) |
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8.3.4 Analytical Solution of Longitude and Latitude |
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155 | (1) |
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8.3.5 Analytical Solution of Velocity |
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156 | (1) |
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8.3.6 Optimal Initial Glide Angle |
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157 | (1) |
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157 | (7) |
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8.4.1 Comparison Between Analytical Solution and Numerical Integral |
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157 | (1) |
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8.4.2 Comparison with Bell Analytical Solution |
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157 | (3) |
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8.4.3 Application of Analytic Solutions in Trajectory Planning |
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160 | (4) |
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164 | (1) |
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164 | (3) |
9 Trajectory Damping Control Technique for Hypersonic Glide Reentry |
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167 | (24) |
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167 | (1) |
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168 | (6) |
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168 | (2) |
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9.2.2 Command Flight-Path Angle for L/Dmax |
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170 | (2) |
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9.2.3 Guidance Scheme for Range Maximization and Trajectory Damping Control |
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172 | (1) |
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9.2.4 Extended Guidance Scheme for Glide Range Control |
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173 | (1) |
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9.3 Hypersonic Vehicle Model |
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174 | (2) |
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9.4 Results and Discussion |
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176 | (13) |
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9.4.1 Performance of Guidance Scheme |
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176 | (7) |
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9.4.2 Application of the Extended Guidance Scheme |
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183 | (6) |
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189 | (1) |
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189 | (2) |
10 Steady Glide Dynamic Modeling and Trajectory Optimization for High Lift-To-Drag Ratio Reentry Vehicle |
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191 | (22) |
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191 | (2) |
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10.2 Dynamics and Vehicle Description |
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193 | (2) |
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193 | (1) |
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10.2.2 Entry Trajectory Constraints |
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194 | (1) |
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10.2.3 Vehicle Description and Model Assumption |
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194 | (1) |
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10.3 Trajectory-Oscillation Suppressing Scheme |
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195 | (3) |
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10.3.1 Generic Theory for the Oscillation Suppressing Scheme |
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195 | (2) |
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10.3.2 Performance of the Trajectory-Oscillation Suppressing Scheme |
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197 | (1) |
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10.4 Steady Glide Dynamic Modeling and Trajectory Optimization |
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198 | (11) |
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10.4.1 Steady Glide Dynamic Modeling |
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199 | (1) |
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10.4.2 Hp-Adaptive Gaussian Quadrature Collocation Method |
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200 | (1) |
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10.4.3 Numerical Example of Trajectory Optimization Without Bank Reversal |
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201 | (4) |
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10.4.4 Numerical Example of Trajectory Optimization with Bank Reversal |
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205 | (1) |
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10.4.5 Verification of Feasibility for the Pseudospectral Solution |
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206 | (3) |
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209 | (1) |
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210 | (3) |
11 Singular Perturbation Guidance of Hypersonic Glide Reentry |
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213 | (20) |
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11.1 Singular Perturbation Guidance for Range Maximization of a Hypersonic Glider |
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213 | (12) |
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11.1.1 Problem Formulation (Dimensionless Model) |
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213 | (2) |
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11.1.2 Reduced-Order System Solutions |
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215 | (1) |
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11.1.3 Slow-Boundary Layer Solutions |
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216 | (2) |
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11.1.4 Fast-Boundary Layer Solutions |
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218 | (2) |
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11.1.5 Simulation Results |
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220 | (1) |
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11.1.6 Comparison and Analysis |
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221 | (4) |
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11.2 Improved Singular Perturbation Guidance for Maximum Glide Range |
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225 | (7) |
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11.2.1 Dynamic Model and Solutions to the Reduced-Order System |
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226 | (1) |
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11.2.2 Boundary Layer Correction |
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227 | (1) |
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11.2.3 Slow Boundary-Layer Correction |
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227 | (1) |
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11.2.4 Fast Boundary-Layer Correction |
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228 | (1) |
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11.2.5 Guidance Law Derivation |
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228 | (1) |
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11.2.6 Simulation Results and Analyses |
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229 | (3) |
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232 | (1) |
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232 | (1) |
12 3-D Reentry Guidance with Real-Time Planning of Reference using New Analytical Solutions Based on Spectral Decomposition Method |
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233 | (44) |
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233 | (2) |
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235 | (2) |
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12.3 Entry Trajectory Constraints |
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237 | (1) |
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237 | (1) |
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12.3.2 Terminal Conditions |
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237 | (1) |
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12.4 Analytical Solutions to Hypersonic Gliding Problem |
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237 | (11) |
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12.4.1 Auxiliary Geocentric Inertial (AGI) Frame |
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237 | (2) |
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12.4.2 Linearization of the Equations of Motion |
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239 | (2) |
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12.4.3 Analytical Solutions |
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241 | (4) |
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12.4.4 Example for Accuracy Verification |
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245 | (3) |
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248 | (25) |
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248 | (1) |
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12.5.2 Quasi-Equilibrium Glide Phase |
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249 | (11) |
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12.5.3 Altitude Adjustment Phase |
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260 | (2) |
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12.5.4 Results and Discussion |
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262 | (1) |
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262 | (11) |
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273 | (1) |
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273 | (2) |
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275 | (2) |
13 Omnidirectional Autonomous Reentry Guidance Based on 3-D Analytical Glide Formulae Considering Influence of Earth's Rotation |
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277 | (46) |
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277 | (3) |
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13.2 Entry Guidance Problem |
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280 | (2) |
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13.2.1 Equations of Motion |
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280 | (1) |
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281 | (1) |
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13.2.3 Terminal Conditions |
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282 | (1) |
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13.3 Omnidirectional Autonomous Entry Guidance |
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282 | (18) |
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282 | (3) |
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285 | (1) |
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13.3.3 Steady Glide Phase |
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286 | (14) |
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13.4 Altitude Adjustment Phase |
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300 | (6) |
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13.4.1 Correction of Baseline AOA Profile and Second Bank Reversal |
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300 | (4) |
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13.4.2 Baseline Bank Angle in AAP |
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304 | (1) |
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13.4.3 AOA and Bank Angle Commands in AAP |
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305 | (1) |
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13.5 Results and Discussion |
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306 | (8) |
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306 | (3) |
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13.5.2 Monte Carlo Simulations |
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309 | (5) |
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314 | (1) |
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Appendix 1: Generalized States of Motion |
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315 | (3) |
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Appendix 2: Generalized Aerodynamic Forces |
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318 | (1) |
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319 | (4) |
14 Analytical Steady-Gliding Guidance Employing Pseudo-Aerodynamic Profiles |
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323 | (42) |
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323 | (2) |
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14.2 Entry Guidance Problem |
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325 | (2) |
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14.2.1 Equations of Motion |
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325 | (1) |
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326 | (1) |
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14.2.3 Terminal Conditions |
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327 | (1) |
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14.3 Analytical Entry Guidance Design |
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327 | (22) |
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328 | (1) |
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14.3.2 Steady Glide Phase |
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328 | (16) |
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14.3.3 Altitude Adjustment Phase |
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344 | (5) |
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14.4 Results and Discussion |
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349 | (12) |
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349 | (5) |
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14.4.2 Monte Carlo Simulations |
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354 | (7) |
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361 | (3) |
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364 | (1) |
15 Linear Pseudospectral Guidance Method for Eliminating General Nominal Effort Miss Distance |
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365 | (24) |
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365 | (1) |
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15.2 Generic Theory of LGPMPC |
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366 | (11) |
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15.2.1 Linearization of Nonlinear Dynamic System and Formulation of Linear Optimal Control Problem |
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367 | (2) |
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15.2.2 Linear Gauss Pseudospectral Method |
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369 | (5) |
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15.2.3 Singularity of Differential Approximation Matrices for Different Pseudospctral Methods |
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374 | (1) |
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15.2.4 Boundary Control of Linear Gauss Pseudospctral Method |
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374 | (1) |
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15.2.5 Implementation of LGPMPC |
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375 | (2) |
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15.3 Application to Terminal Guidance |
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377 | (9) |
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15.3.1 Terminal Guidance Problem and Three-Dimensional Mode |
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377 | (2) |
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15.3.2 Initial Guess and Target Model |
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379 | (1) |
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15.3.3 Cases for Target with Straight-Line Movements |
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380 | (4) |
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15.3.4 Comparison with Adaptive Terminal Guidance |
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384 | (2) |
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386 | (1) |
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387 | (1) |
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388 | (1) |
16 Linear Pseudospectral Reentry Guidance with Adaptive Flight Phase Segmentation and Eliminating General Nominal Effort Miss Distance |
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389 | (44) |
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389 | (2) |
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16.2 Entry Dynamics, Entry Trajectory Constraints and Vehicle Description |
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391 | (3) |
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391 | (1) |
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16.2.2 Entry Trajectory Constraints |
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392 | (1) |
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16.2.3 Vehicle Description and Model Assumption |
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393 | (1) |
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16.2.4 Auxiliary Geocentric Inertial Frame and Emotion Dynamics |
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393 | (1) |
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16.3 Linear Pseudospectral Model Predictive Entry Guidance |
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394 | (23) |
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16.3.1 Descent Phase Guidance |
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395 | (1) |
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16.3.2 Glide Phase Entry Guidance |
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395 | (16) |
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16.3.3 Terminal Adjustment Phase |
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411 | (5) |
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16.3.4 Implementation of the Proposed Method |
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416 | (1) |
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16.4 Numeric Results and Discussion |
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417 | (13) |
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16.4.1 Normal Cases for Various Destinations |
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417 | (6) |
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16.4.2 Monte Carlo Simulations |
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423 | (7) |
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430 | (1) |
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431 | (2) |
17 Trajectory-shaping Guidance with Final Speed and Load Factor Constraints |
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433 | |
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433 | (2) |
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435 | (2) |
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17.3 Guidance Law Overview |
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437 | (1) |
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17.4 Trajectory Shaping Guidance |
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437 | (15) |
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437 | (1) |
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17.4.2 Generalized Closed Form Solutions for TSG |
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438 | (10) |
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17.4.3 Stability Domain of Guidance Coefficients |
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448 | (4) |
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17.5 Final Speed Control Scheme |
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452 | (1) |
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453 | (1) |
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17.7 Results and Discussion |
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454 | (6) |
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460 | (1) |
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460 | |