基于模糊方法的线性切换系统的鲁棒稳定与镇定  

Stabilization and Robust Stability of Switched Systems Under Fuzzy Switching Strategy

作　　者：景丽[1] 高立群[2] 欧新元[1] 

机构地区：[1]沈阳师范大学数学与系统科学学院,辽宁沈阳110034 [2]东北大学信息科学与工程学院,辽宁沈阳110004

出　　处：《计算技术与自动化》2007年第3期5-8,共4页Computing Technology and Automation

基　　金：辽宁省自然科学基金(2001101026)

摘　　要：目前的切换方法大多都是精确切换,但是实际系统由于干扰或执行延迟等原因,常常不能按照精确的切换条件进行切换,这直接威胁系统的稳定性,因此提出切换系统要进行模糊切换的,以切换系统在模糊切换下的稳定性条件为基础。研究模糊切换下的切换系统的鲁棒稳定、镇定问题,并提出系统鲁棒稳定、镇定的充分条件。大量的仿真结果证实,提出的使切换系统鲁棒稳定、镇定的模糊方法是切实有效的。It was first pointed out that switching strategies of switched systems are usually exact. But practical systems may not be switched when exact conditions are satisfied because of distarbance and delay. This affects the stability of systems. So the paper proposed that switched systems should be switched under fuzzy switching strategy. Second, according to a sufficient condi- tion of stability of switched systems under fuzzy switching strategy, the stabilization and robust stability problem of switched systems were studied and sufficient conditions for them were proposed. Many simulations show that the presented method is simple and effective.

关 键 词：线性切换系统 镇定 鲁棒稳定 T-S模糊模型 隶属度函数 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]