A study of chattering avoidance in slide mode control guidance law for interceptor

This paper engages to study the chattering problem in slide mode control guidance law (SMCGL). Applying the adaptive ability of slide mode control to system instability, a typical 3-D SMCGL based on line-of-sight (LOS) is presented and then developed by using fuzzy logic to smooth the signal function. Base on above study, adaptive active actor is designed to online adjust the parameters of the fuzzy rules used by above guidance law. In the numerical simulation, it is obviously that the proposed guidance law reduces the chattering phenomenon and is superior to typical SMCGL in terms of miss distance.