A hybrid strategy for the time- and energy-efficient trajectory planning of parallel platform manipulators

Authors:
Chun-Ta Chen;Te-Tan Liao
Affiliations:
Department of Mechanical and Automation Engineering, Da Yeh University, 168 University Road, Dacun, Changhwa 51591, Taiwan;Department of Mechanical Engineering, Far East University, No. 49, Chung Hua Road, Hsin-Shih, Tainan 744, Taiwan
Venue:
Robotics and Computer-Integrated Manufacturing
Year:
2011

Citing 3
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Abstract

In planning the trajectories of motor-driven parallel platform manipulators, the objective is to identify the trajectory which accomplishes the assigned motion with the minimal travel time and energy expenditure subject to the constraints imposed by the kinematics and dynamics of the manipulator structure. In this study, the possible trajectories of the manipulator are modeled using a parametric path representation, and the optimal trajectory is then obtained using a hybrid scheme comprising the particle swarm optimization method and the local conjugate gradient method. The numerical results confirm the feasibility of the optimized trajectories and show that the hybrid scheme is not only more computationally efficient than the standalone particle swarm optimization method, but also yields solutions of a higher quality.