Sliding mode control with unidirectional auxiliary surfaces for Gun-launched UAV

In this paper, the sliding mode control with uni-directional auxiliary surface (UAS-SMC) is proposed for Gun-launched UAV with chattering alleviation and attenuation. The necessary definitions in UAS-SMC method is given to show the detailed information of this method. And relationship between UAS-SMC and traditional SMC method is presented to clearly understand the UAS-SMC theory. Then, a discontinuous UAS-SMC controller is designed to solve the tracking problem of Gun-launched UAV. The simulation results are given to illustrate the performance of UAS-SMC controller.