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Underwater Robots - Gianluca Antonelli.pdf

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Contents XXVII<br />

7.5 Non-regressor-Based Adaptive Control .................... 149<br />

7.6 Sliding Mode Control ................................... 151<br />

7.6.1 Stability Analysis ................................ 152<br />

7.6.2 Simulations ...................................... 154<br />

7.7 Adaptive Control ....................................... 157<br />

7.7.1 Stability Analysis ................................ 158<br />

7.7.2 Simulations ...................................... 160<br />

7.8 Output Feedback Control ................................ 162<br />

7.8.1 Stability Analysis ................................ 168<br />

7.8.2 Simulations ...................................... 172<br />

7.9 Virtual Decomposition Based Control ..................... 181<br />

7.9.1 Stability Analysis ................................ 186<br />

7.9.2 Simulations ...................................... 188<br />

7.9.3 Virtual Decomposition with the Proper Adapting Action194<br />

7.10 Conclusions............................................ 198<br />

8. Interaction Control ofUVMSs ............................ 201<br />

8.1 Introduction toInteraction Control of <strong>Robots</strong> .............. 201<br />

8.2 Dexterous Cooperating <strong>Underwater</strong> 7-DOF Manipulators .... 203<br />

8.3 Impedance Control ..................................... 203<br />

8.4 External Force Control .................................. 205<br />

8.4.1 Inverse Kinematics ............................... 206<br />

8.4.2 Stability Analysis ................................ 207<br />

8.4.3 Robustness ...................................... 208<br />

8.4.4 Loss of Contact .................................. 209<br />

8.4.5 Implementation Issues ............................ 209<br />

8.4.6 Simulations ...................................... 210<br />

8.5 Explicit Force Control .................................. 213<br />

8.5.1 Robustness ...................................... 217<br />

8.5.2 Simulations ...................................... 218<br />

8.6 Conclusions............................................ 223<br />

9. Coordinated Control of Platoons of AUVs ................ 225<br />

9.1 Introduction ........................................... 225<br />

9.2 Kinematic Control of AUVs .............................. 227<br />

9.2.1 Simulations ...................................... 232<br />

9.3 Experimental Set-Up atthe Virginia Tech ................. 235<br />

9.4 Conclusions............................................ 236<br />

10. Concluding Remarks ..................................... 237

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