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Zero Speed Operation Of Speed Sensorless Vector Contolled Induction Motors Based On G - Positive Realness And E1 - Modification Approach
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| Author(s) |
Masaru Hasegawa, Keiju Matsui |
| Abstract |
This paper proposes a design of a robust adaptove full-order observer based on y-positive realness and €1-modification approach for zero speed operation of sensorless vector controlled induction motors. Stability condition of the adaptive full-order observer is well known according to Popov's hyper-stability criterion. In addition, a design for highly robust flux phase estimation as well as stable speed identification is expected for robust performance of the whole vector control system in low speed region. Firstly, the error system of the adaptive full-order observer is reconsidered in this paper, requirements of adaptive full-order observer with speed identifier are described. Next, in order to satisfy all requirements of the robust adaptive observer, the design of the observer gain based on y-positive real problem and the speed adaptive scheme using €1-modification approach. Finally, feasibility and effectiveness of the proposed design are shown by experimental result of zero speed operation. |
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| Filename: | A71128 |
| Filesize: | 1.107 MB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-17 by System |
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