An Improvement of Continuous Control Law for Removing Chattering Phenomenon of VSC Systems

가변구조 제어계의 채터링 현상의 제거 및 연속입력을 얻기 위한 입력법칙의 개선

In this paper, a methodology is developed to remove the high frequency chattering phenomenon which is the common drawbacks of variable structure control(VSC) system. An improved control law is proposed to achieve continuous control input whose terms are continuous functions during the control process under switching plane, which removes chattering and is robust as well. The methodology developed in this paper is applied to attitude control for spacecraft and the simulated results are compared with those of typical VSC methodology.