SAMPLED-DATA CONTROLLER REDUCTION PROCEDURE

被引:5
|
作者
MADIEVSKI, AG
ANDERSON, BDO
机构
[1] Department of Systems Engineering, Australian National University, Canberra, ACT
关键词
D O I
10.1109/9.471217
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
The problem of controller order reduction aimed at preserving the closed-loop performance of a sampled-data closed-loop system is investigated. Fast sampling of the system at a multiple of the sampling frequency followed by lifting allows capturing of the system's intersample behavior and yields a time-invariant single-rate system; this then permits standard order-reduction ideas to be applied. Special weighting functions aimed at preserving the closed-loop transfer function are obtained, and weighted balanced truncation is used to reduce the controller. An example shows that without the use of fast-sampling, an unstable closed loop can result from the reduction.
引用
收藏
页码:1922 / 1926
页数:5
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