Global Finite-Time Stabilization for Nonholonomic Mobile Robots Based on Visual Servoing:

[摘要] In this paper, the global finite-time stabilization problem is considered for nonholonomic mobile robots based on visual servoing with uncalibrated visual parameters, control direction and unmatched external disturbances. Firstly, the simple dynamic chained-form systems is obtained by using a state and input transformation of the kinematic robot systems. Secondly, a new discontinuous switching controller is presented in the presence of uncertainties and disturbances, it is rigorously proved that the corresponding closed-loop system can be stabilized to the origin equilibrium point in a finite time. Finally, the simulation results show the effectiveness of the proposed control design approach.

[学科分类] 自动化工程

[关键词] Nonholonomic Mobile Robots;Chained-form System;Visual Servoing;Finite-time Stabilization;Switching Control