摘要
提升技术已成为采样系统设计的主要工具,但提升变换不能保证频率响应不变,故不适用于加权(函数)H∞设计.为此,针对采样控制系统的结构特点,将频率响应分为两个通道进行计算.采用经典的采样系统理论,既可以得到频率响应,又可以求得采样系统的L2诱导范数.方法简单直观,物理概念清楚.
It is pointed out that the lifting technique is not suitable for H∞ synthesis with weighting functions of sampled-data systems. According to the special structure of the sampled-data control system, the signal channel is really composed of two parts： A continuous-time part and a discrete-time one. So the frequency response can be obtained via the classical sampled-data theory, and the L2-induced norm of the system can be obtained as well. This method is simple, intuitive, and with clear physical meanings.
出处
《控制与决策》
EI
CSCD
北大核心
2005年第10期1133-1136,共4页
Control and Decision
基金
哈尔滨工业大学重点学科建设基金项目(54100179)
关键词
采样系统
提升技术
频率响应
L2诱导范数
H∞设计
Sampled-data system
Lifting technique
Frequency response
L2-induced norm
H∞synthesis
