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This paper explores a performance of first-order configuration prediction for redundant manipulators based on avoidance manipulability in order to achieve an on-line control of trajectory tracking and obstacle avoidance for redundant manipulators. In the trajectory tracking process, manipulator is required to keep a configuration with maximal avoidance manipulability in real time. Predictive control in this paper uses manipulators’ future configurations to control current configuration aiming at completing tasks of trajectory tracking and obstacle avoidance on-line and simultaneously with higher avoidance manipulability. We compare Multi-Preview Control with predictive control using redundant manipulator, and show the results through simulations. The effectiveness of predictive control using first-order configuration prediction is also validated in the case of not only straight target trajectory but also curve target trajectory. In addition, an influence of measurement noise on manipulator’s joint angle is newly considered.

Performance Analysis for First-Order Configuration Prediction for Redundant Manipulators Based on Avoidance Manipulability