系统的增速依赖于不可测状态非线性系统全局输出反馈渐近镇定  

Globally Asymptotical Output-feedback Stabilization for Nonlinear Systems with Unmeasured States Dependent Growth

作　　者：尚芳[1] 刘允刚[1] 张承慧[1] 

机构地区：[1]山东大学控制科学与工程学院,济南250061

出　　处：《自动化学报》2007年第12期1326-1331,共6页Acta Automatica Sinica

基　　金：国家自然科学基金(60304002;60674036);山东省科技发展计划(2004GG4204014);教育部新世纪优秀人才支持计划资助~~

摘　　要：研究了一类非线性增长速度依赖于不可测状态且有稳定零动态非线性系统的全局输出反馈渐近稳定控制问题.因所研究的系统隐含有零动态,所以首先定义了一系列新的线性变换,从而成功地分离出原系统的零动态,得到了便于输出反馈设计的新系统.然后给出了变换后系统的较为简洁的输出反馈控制设计过程,并且,闭环系统的渐近稳定性可由所导出矩阵的正定性来保证.最后,仿真算例验证了文中理论结果的正确性.In this paper, the globally asymptotical outputfeedback stabilization problem is investigated for a class of nonlinear systems w.ith unmeasured states dependent growth and stable zero-dynamics. Because of the existence of zero-dynamics, a series of novel linear transformations are first defined to successfully separate the zero-dynamics from the original system, and the new system is thus derived which is convenient for the output-feedback design. Then, a simple design procedure is given for the output-feedback control of the transformed system. Besides, the globally asymptotical stability of the closedloop system can be guaranteed by the positive definiteness of the derived matrix. Finally, a simulation example is given to illustrate the correctness of the theoretical results.

关 键 词：非线性系统 线性变换 输出反馈 全局渐近稳定 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]