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Inverse dynamics of spatial open‐chain flexible manipulators with lumped and distributed actuators

机译：Inverse dynamics of spatial open‐chain flexible manipulators with lumped and distributed actuators

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AbstractThis article addresses the problem of inverse dynamics for three‐dimensional flexible manipulators with both lumped and distributed actuators. A recursive procedure is presented for computing the lumped inverse dynamic torques and the distributed piezoelectric actuator inputs for simultaneously tracking a prescribed end‐point trajectory and reducing induced vibrations in the manipulator. The procedure sequentially solves for the non‐causal inverse dynamic torques and piezoelectric voltages applied to each link in the manipulator, starting from the last element in the chain and proceeding to the base element. The method allows trajectory tracking wherein controllability of the structural vibrations is assured in all possible configurations through the use of only one motor at each intermediate joint and three motors at the ground. Numerical simulation shows that the elastic vibrations can be reduced significantly through the use of distributed actuators while at the same time satisfying the trajectory tracking requirement through the use of inverse dynamics. © 1994 John WileySon

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