| 摘要: |
|
| 关键词: |
| DOI： |
| Received:December 06, 2002Revised:June 02, 2003 |
| 基金项目: |
|
| On the order of stable compensators for a class of time-delay system |
| Hanlin HE, Zhongsheng WANG, Xiaoxin LIAO |
| (Departmant of Control Science and Engineering, Huazhong University of Science and Technology, Wuhan Hubei 430074, China; Culture and Science College, Naval University of Engineering, Wuhan Hubei 430033, China) |
| Abstract: |
| The stabilization using a stable compensator does not introduce additional unstable zeros into the closed-loop transfer function beyond those of the original plant, so it is a desirable compensator, the price is that the compensator's order will go up. This note considered the order of stable compensators for a class of time-delay systems. First, it is shown that for single-loop plants with at most one real right-half plane zero, a special upper bound for the minimal order of a strongly stabilizing compensator can be obtained in terms of the phnt order; Second, it is shown that approximate unstable pole-zero cancellation does not occur, and the distances between distinct unstable zeroes are bounded below by a positive constant, then it is possible to find an upper bound for the minimal order of a strongly stabilizing compensator. |
| Key words: Stabilization Strong stabilization Time-delay system Interpolation |
