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1 Introduction and Overview page |
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1 | (14) |
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1.1 Motivation and Background |
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1 | (4) |
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5 | (1) |
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6 | (2) |
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8 | (1) |
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1.5 A Brief History of Robot Grasp Mechanics |
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9 | (6) |
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12 | (3) |
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Part I Basic Geometry of the Grasping Process |
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15 | (118) |
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2 Rigid-Body Configuration Space |
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17 | (21) |
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2.1 The Notion of Configuration Space |
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17 | (3) |
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2.2 Configuration Space Obstacles |
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20 | (3) |
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2.3 The C-Obstacle Normal |
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23 | (3) |
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2.4 The C-Obstacle Curvature |
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26 | (12) |
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30 | (1) |
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Appendix: Details of Proofs |
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31 | (3) |
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34 | (3) |
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37 | (1) |
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3 Configuration Space Tangent and Cotangent Vectors |
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38 | (16) |
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3.1 C-Space Tangent Vectors |
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38 | (3) |
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3.2 C-Space Cotangent Vectors |
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41 | (2) |
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3.3 Line Geometry of Tangent and Cotangent Vectors |
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43 | (11) |
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48 | (1) |
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49 | (3) |
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52 | (2) |
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4 Rigid-Body Equilibrium Grasps |
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54 | (27) |
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4.1 Rigid-Body Contact Models |
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54 | (5) |
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59 | (2) |
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4.3 The Equilibrium Grasp Condition |
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61 | (4) |
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4.4 The Internal Grasp Forces |
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65 | (2) |
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4.5 The Moment Labeling Technique |
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67 | (14) |
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71 | (1) |
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Appendix: Proof of Moment Labeling Lemma |
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72 | (1) |
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73 | (7) |
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80 | (1) |
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5 A Catalog of Equilibrium Grasps |
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81 | (52) |
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5.1 Line Geometry of Equilibrium Grasps |
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81 | (2) |
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5.2 The Planar Equilibrium Grasps |
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83 | (14) |
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5.3 The Spatial Equilibrium Grasps |
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97 | (13) |
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5.4 Equilibrium Grasps Involving Higher Numbers of Fingers |
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110 | (23) |
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111 | (1) |
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112 | (5) |
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Appendix II The Dimension of the Set of Frictionless Equilibrium Grasps |
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117 | (3) |
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120 | (12) |
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132 | (1) |
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Part II Frictionless Rigid-Body Grasps and Stances |
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133 | (166) |
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6 Introduction to Secure Grasps |
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135 | (12) |
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135 | (4) |
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6.2 Wrench Resistant Grasps |
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139 | (3) |
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6.3 Duality of Immobilizing and Wrench-Resistant Grasps under Frictionless Contact Conditions |
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142 | (2) |
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6.4 A Forward Look at the Chapters of Part II |
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144 | (3) |
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144 | (1) |
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145 | (1) |
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146 | (1) |
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7 First-Order Immobilizing Grasps |
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147 | (20) |
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7.1 The First-Order Free Motions |
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147 | (4) |
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7.2 The First-Order Mobility Index |
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151 | (3) |
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7.3 First-Order Immobilization |
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154 | (3) |
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7.4 Graphical Interpretation of the First-Order Mobility Index |
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157 | (10) |
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160 | (1) |
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161 | (2) |
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163 | (3) |
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166 | (1) |
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8 Second-Order Immobilizing Grasps |
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167 | (27) |
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8.1 The Second-Order Free Motions |
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167 | (4) |
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8.2 The Second-Order Mobility Index |
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171 | (2) |
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8.3 Second-Order Immobilization |
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173 | (4) |
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8.4 Graphical Depiction of Second-Order Mobility |
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177 | (17) |
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182 | (1) |
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183 | (5) |
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188 | (5) |
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193 | (1) |
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9 Minimal Immobilizing Grasps |
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194 | (38) |
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9.1 Minimal First-Order Immobilizing Grasps |
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195 | (3) |
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9.2 The Maximal Inscribed Disc |
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198 | (3) |
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9.3 Minimal Second-Order Immobilizing Grasps |
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201 | (7) |
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9.4 Minimal Second-Order Immobilization of Polygons |
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208 | (4) |
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9.5 Minimal Second-Order Immobilization of Polyhedral Objects |
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212 | (20) |
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220 | (1) |
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Appendix I Details Concerning the Inscribed Disc |
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220 | (2) |
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Appendix II Details Concerning Minimal Second-Order Immobilization of 2-D Objects |
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222 | (3) |
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225 | (5) |
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230 | (2) |
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10 Multi-Finger Caging Grasps |
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232 | (24) |
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10.1 Robot Hands Governed by a Scalar Shape Parameter |
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233 | (1) |
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10.2 Configuration Space of One-Parameter Robot Hands |
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234 | (2) |
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10.3 C-Space Representation of Cage Formations |
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236 | (3) |
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10.4 The Caging Set Puncture Point |
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239 | (3) |
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10.5 Graphical Depiction of Two-Finger Cage Formations |
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242 | (14) |
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246 | (1) |
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247 | (3) |
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250 | (4) |
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254 | (2) |
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11 Frictionless Hand-Supported Stances under Gravity |
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256 | (43) |
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11.1 C-Space Representation of Equilibrium Stances |
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257 | (4) |
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11.2 The Stable Equilibrium Stances |
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261 | (3) |
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11.3 The Stance Stability Test |
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264 | (5) |
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11.4 Formulas for the Stance Stability Test |
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269 | (2) |
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11.5 The Stable Equilibrium Region of 2-D Stances |
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271 | (6) |
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11.6 The Stable Equilibrium Region of 3-D Stances |
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277 | (22) |
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285 | (1) |
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286 | (3) |
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289 | (8) |
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297 | (2) |
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Part III Frictional Rigid-Body Grasps and Stances |
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299 | (110) |
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12 Wrench-Resistant Grasps |
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301 | (20) |
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12.1 Wrench Resistance and Internal Grasp Forces |
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302 | (3) |
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12.2 Wrench Resistance as a Linear Matrix Inequality |
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305 | (3) |
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12.3 Grasp Force Optimization |
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308 | (2) |
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12.4 Grasp Controllability |
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310 | (11) |
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315 | (1) |
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315 | (4) |
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319 | (2) |
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13 Grasp Quality Functions |
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321 | (28) |
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13.1 Quality Functions Based on Rigid-Body Kinematics |
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322 | (1) |
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13.2 Quality Functions Based on the Grasp Matrix |
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323 | (5) |
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13.3 Quality Functions Based on the Grasp Polygon |
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328 | (2) |
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13.4 Quality Functions Based on Contact Point Locations |
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330 | (3) |
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13.5 Quality Functions Based on Contact Force Magnitudes |
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333 | (3) |
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13.6 Finger Force Optimization Based on Task Specification |
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336 | (13) |
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339 | (1) |
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Appendix I Review of Distance Metrics and Norms |
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340 | (1) |
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Appendix II Behavior of the Grasp Matrix under Coordinate Transformations |
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341 | (2) |
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Appendix III The Wrench Resistance Regions |
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343 | (1) |
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344 | (4) |
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348 | (1) |
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14 Hand-Supported Stances under Gravity -- Part I |
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349 | (22) |
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14.1 Local Wrench-Resistant Stances |
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350 | (2) |
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14.2 The Feasible Equilibrium Region of 2-D Stances |
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352 | (3) |
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14.3 Graphical Construction of the 2-D Stance Equilibrium Region |
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355 | (3) |
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14.4 Safety Margin on the 2-D Stance Equilibrium Region |
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358 | (13) |
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363 | (1) |
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363 | (2) |
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365 | (5) |
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370 | (1) |
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15 Hand-Supported Stances under Gravity --- Part II |
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371 | (38) |
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15.1 Basic Properties of 3-D Equilibrium Stances |
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372 | (2) |
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15.2 The Tame Hand-Supported Stances |
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374 | (3) |
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15.3 A Scheme for Computing the Stance Equilibrium Region |
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377 | (2) |
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15.4 The Boundary of the Net Wrench Cone W |
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379 | (4) |
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15.5 Critical Contact Forces That Contribute Boundary Facets to W |
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383 | (4) |
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15.6 The Stance Equilibrium Region Boundary Curves |
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387 | (4) |
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15.7 Onset of Non-Static Motion Modes at the Contacts |
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391 | (18) |
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392 | (1) |
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Appendix: Proofs and Technical Details |
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393 | (10) |
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403 | (5) |
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408 | (1) |
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Part IV Grasping Mechanisms |
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409 | (69) |
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16 The Kinematics and Mechanics of Grasping Mechanisms |
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411 | (30) |
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16.1 The Relation between Finger-Joint Velocities and the Grasped Object Rigid-Body Velocity |
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411 | (6) |
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16.2 The Relation between Finger-Joint Torques and Grasped Object Wrenches |
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417 | (4) |
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16.3 The Four Types of Hand Mechanism Grasp Forces |
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421 | (6) |
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16.4 Effect of the Robot Hand on Wrench-Resistant Grasps |
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427 | (14) |
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434 | (1) |
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Appendix I The Jacobian of a Single Finger Mechanism |
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434 | (1) |
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Appendix II Resistant Contact Force Decomposition |
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435 | (1) |
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436 | (4) |
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440 | (1) |
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441 | (13) |
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17.1 Instantaneous Manipulability |
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442 | (4) |
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17.2 Local Manipulability |
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446 | (8) |
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449 | (1) |
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Appendix: Proof of the Local Manipulability Theorem |
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450 | (1) |
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451 | (2) |
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453 | (1) |
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18 Hand Mechanism Compliance |
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454 | (24) |
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18.1 One-Dimensional Stiffness and Compliance |
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454 | (3) |
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18.2 The Effects of Joint Compliance on Grasp Stiffness |
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457 | (6) |
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18.3 The Grasp Center of Stiffness |
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463 | (4) |
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18.4 Stability of Compliant Grasps |
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467 | (11) |
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471 | (1) |
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Appendix: Derivation of the Grasp Stiffness Matrix |
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471 | (4) |
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475 | (1) |
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476 | (2) |
Appendix A Introduction to Non-Smooth Analysis |
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478 | (8) |
Appendix B Summary of Stratified Morse Theory |
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486 | (7) |
Index |
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