| Autor: |
Dong-Seul Jeong, Chung-Choo Chung, Kyu-Nam Cho |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
Journal of Control, Automation and Systems Engineering. 13:1040-1047 |
| ISSN: |
1225-9845 |
| DOI: |
10.5302/j.icros.2007.13.11.1040 |
| Popis: |
This paper presents ripple-free method that can occur in multirate controller design. The conventional multirate input controller has the problem that the ripple occurs in track-following because of chattering phenomenon in control input signal. In order to resolve the problem of rippling, it was proposed to eliminate the ripple phenomenon using feedforward compensator. This paper makes explains problems in conventional ripple-tree multirate controller and introduces a multirate controller design method applying lifting technique based on current estimators in condition space. Using the ripple-tree multirate controller, we show that chattering does not occur in the control input signal through applying the final value theorem from the viewpoint of discrete-time transformation. Also, this study proves that the ripple of the proposed controller decreases with the increase of this sampling frequency and, when sampling frequency is fixed, it decreases with the increase of the control input period. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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