不确定关联量化系统的分散输出反馈H-infinity控制  

Dedcentralized output feedback H-infinity control for uncertain interconnected systems with quantization

作　　者：陈宁[1] 沈晓瑜[1] 桂卫华[1] 翟贵生 

机构地区：[1]中南大学信息科学与工程学院,长沙410083 [2]芝浦工业大学数理科学系琦玉337-8570日本

出　　处：《高技术通讯》2013年第7期741-747,共7页Chinese High Technology Letters

基　　金：国家自然科学基金(61074001);中央高校基本科研业务费专项资金(2010QZZD016)资助项目

摘　　要：研究了不确定关联网络系统动态输出反馈分散H_∞控制器和量化器的设计问题,提出了下述依赖于控制器状态和系统输出的量化控制策略。每个控制器的输出经过量化器量化后输入到子系统中。由于对数据量化而引起的量化效应使得原始信号和实际应用信号之间存在偏差,这些偏差会对系统的稳定性和性能产生重要影响。假设系统的输出反馈H_∞控制器已经得到,采用动态量化器分别对控制器的状态、系统测量输出和控制输入进行量化,通过调节动态量化器的缩放参数,使得整个闭环系统渐进稳定并且仍能满足一定的H_∞性能指标。控制器和量化器的参数都是以分散的形式得到。The design of dynamic output feedback controllers and quantizers was studied for uncertain interconnected H decentralized networked systems, and the systems＇ quantized control scheme relying on the controller state and the system output was proposed below. The output of each controller was quantized before it was input into the subsys tem. Quantization errors between original signals and quantized signals caused by quantization effects may cause the system performance to deteriorate. For this purpose, under the assumption that a decentralized dynamic output feedback controller had been designed, the quantized control was dependent not only on the controller state but also on the system measurement output so that the quantized closedloop system was asymptotically stable with the same H disturbance attenuation level as on no quantizers circumstance. Both the designed controllers and the quantiz ers＇ parameters were constructed in a decentralized manner, denendingon local information.

关 键 词：关联网络系统 动态输出反馈 时变量化器 分散控制 控制 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]