Sliding Mode Control for a Constant Force Suspension System

摘要

The constant force suspension system is the core device of suspended gravity compensation platform. It can provide a microgravity environment similar to space for test objects, and is of great significance to the development of ground testing and verification technology for space missions. In this paper, a sliding mode controller based on a new reaching law is designed for the dynamic model of a constant force suspension system. The simulation results show that, compared with the existing controller, the controller suppresses the overshoot and chattering while reducing the settling time, thereby improving the stability and practical value of the system.