在分析了几种离散变结构趋近律趋近过程的基础上,提出了一种改进的趋近律,该方法能够大幅度削弱抖振,使系统运动最终趋于原点且不存在稳态振荡,能使系统的准滑动模态保持步步穿越切换面的基本属性,改善了趋近过程.
An improved discrete reaching law is presented based on the analysis of the reaching process of some discrete reaching law.The discrete-time variable structure control system which is designed by this reaching law can weaken the chattering,approach to zero diminishingly,and keep the basic property of quasi-sliding mode which can cross the switching surface step by step,and the reaching process is improved.