摘要
讨论了系统辨识实验信号的设计方法.从实际控制器和理想控制器间误差的角度出发,评价系统性能指标为系统在实际和在理想控制器控制下输出误差的平方均值最小.当输入信号或输出信号能量有限时,分别推导出辨识输入信号功率谱密度.当控制策略为最小方差控制时,给出信号功率谱的具体表达式.结论对在最小方差控制下的闭环辨识信号设计有指导作用.
A closed-loop test design for identification was presented. The control scheme is the minimum variance control and the design constraint is the power of process output or that of reference signal. The performance index is the minimum mean square of the output errors between the system using the real model and that using the identified model. Based on the asymptotical theory, simple design formulas of the reference signal spectrum were derived.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2004年第4期521-523,共3页
Journal of Shanghai Jiaotong University
基金
国家高技术研究发展计划(863)项目(2001AA413130)
关键词
最小方差控制
闭环辨识
功率谱密度
实验设计
Design
Error analysis
Identification (control systems)
Least squares approximations
Signal processing
