Intelligent switching gain based sliding mode control for optimization
of power consumption in cooperative manipulators
Abstract
Cooperative manipulators, vital for intricate tasks, are gaining
widespread attention across industries. Recognizing their impact on
power consumption, costs, and task outcomes, this paper emphasizes the
critical study of control methods, actuator power consumption, and
manipulator accuracy. Addressing these challenges, we propose a Neural
Network-Sliding Mode Controller (NN-SMC) to optimize actuator power
consumption and minimize errors in cooperative manipulators. Operating
in trajectory and point-to-point modes, the NN-SMC dynamically generates
real-time Switching Mode Controller (SMC) gains (L and K) for precise
control. Stability is ensured by maintaining gains within permissible
ranges. In point-to-point mode, the NN orchestrates an optimal path
generation, along with tailored gains. To evaluate performance
accurately, a novel control performance index is introduced.
Experimental results on 3-DOF cooperative manipulators demonstrate a
remarkable 28% increase in the control performance index for the
trajectory mode and a substantial reduction in computational complexity
for both modes. This work not only addresses inherent challenges in
cooperative manipulators but also signifies a methodological advancement
through the integration of neural network-based control, promising
enhanced efficiency and stability.