Application of Proportional-Integral sliding mode tracking controller to robot manipulators

This paper presents the development of a proportional-integral sliding mode controller for tracking problem of robot manipulators. A robust sliding mode controller is derived so that the actual trajectory tracks the desired trajectory as closely as possible despite the highly nonlinear and coupled dynamics. The proposed controller is designed using the centralized and decentralized approaches. The proportional-integral sliding mode is chosen to ensure the stability of overall dynamics during the entire period, i.e., the reaching phase and the sliding phase. Application to a two-link planar robot manipulator is considered.