基于逼近误差调节的直接自适应模糊控制

摘要

对含未知参数的一类非线性系统给出一种新的直接自适应模糊控制方案.利用在线自适应调节估计逼近误差,用此估计值设计补偿器减小逼近误差对跟踪精度的影响.该方法不仅能够保证闭环系统的稳定性,而且可以使跟踪误差收敛到0或0的小邻域.%A new direct adaptive fuzzy control scheme is proposed for a class of nonlinear systems with unknown parameters. The approximation errors are estimated by online adaptive adjustment, which is used to design compensator to reduce the effect on tracking precision caused by approximation errors. The proposed method can guarantee the stability of the closedloop system and make the tracking error converge to zero or the small neighborhood of zero.