Nonlinear Sliding Mode Controller Using Disturbance Observer for Permanent Magnet Synchronous Motors under Disturbance
- Title
- Nonlinear Sliding Mode Controller Using Disturbance Observer for Permanent Magnet Synchronous Motors under Disturbance
- Author
- 이영우
- Keywords
- Permanent magnet machines; Sliding mode control; Nonlinear control systems
- Issue Date
- 2023-03-15
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Citation
- EXPERT SYSTEMS WITH APPLICATIONS, Volume 214, Article NO 119085
- Abstract
- We propose a nonlinear sliding mode controller (NSMC) using disturbance observer (DOB) for permanent magnet synchronous motors (PMSMs) under disturbance. A nonlinear gain, which is a function of a sliding surface, is incorporated to improve the performance of the sliding mode controller (SMC). The chattering in the proposed controller is mathematically proven to be lower than that in a conventional sliding mode controller (CSMC). In the NSMC, the sliding surface exponentially converges to zero when the sliding surface is far from zero, and then reaches zero within a finite time, similar to the behavior of the CSMC near zero. The exponential convergence property ensures stability without disturbance information. The chattering performance under the unmodeled dynamics of the PMSM is mathematically analyzed using the describing function method. A DOB is used to compensate for disturbances, such as parameter uncertainties and load torque. The closedloop stability under the perturbation term, which is caused by the disturbance estimation error, is guaranteed without disturbance information.
- URI
- https://information.hanyang.ac.kr/#/eds/detail?an=S0957417422021030&dbId=edselphttps://repository.hanyang.ac.kr/handle/20.500.11754/190102
- ISSN
- 0957-4174
- DOI
- 10.1016/j.eswa.2022.119085
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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