质量矩导弹固定时间二阶滑模控制方法

A fast fixed-time second-order sliding mode control method is proposed for a three-axis stabilized double slider mass moment missile based on the principle of dynamic system zero placement. Firstly, the attitude dynamics model of the mass moment missile with complete coupling dynamics characteristics is established. Secondly, the zero placement principle and convergence time estimation are carried out based on the typical dynamic systems. On this basis, a fixed-time second-order sliding mode control method with an adjustable dynamic process is proposed, and the upper bound of the convergence time of the system is estimated. Finally, the simulation of the mass moment missile verifies the validity of the design method.