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- Title
具有柔性特性的机电伺服系统辨识.
- Authors
闻成; 谭敏哲; 卢洁莹; 苏为洲
- Abstract
The flexible resonance characteristic in the electromechanical servo system is the key element that limits performances of the system. An accurate description of this characteristic is of great significance for suppressing resonance and improving the performance of the servo system. In this paper, adopting pseudo-random sequence as the identification input and combining impulse response correlation identification and eigen-system realization algorithm, an identification scheme which integrates experimental design, model calculation and model verification is proposed. This scheme can effectively identify the flexible modes, and hence is suitable for the identification of electromechanical servo systems. Using a large-aperture radio telescope antenna as the application example, the implementation of the identification scheme is detailed, and the models of the antenna servo system are obtained. The frequency-domain and time-domain fitting indexes indicate that, compared with the least square method and the subspace method, the model obtained by the method in this paper shows advantages in fitting flexible resonances.
- Subjects
RADIO antennas; RADIO telescopes; LEAST squares; IMPULSE response; ANTENNAS (Electronics); APERTURE antennas
- Publication
Control Theory & Applications / Kongzhi Lilun Yu Yinyong, 2023, Vol 40, Issue 4, p663
- ISSN
1000-8152
- Publication type
Article
- DOI
10.7641/CTA.2021.10452