A permanent magnet synchronous motor advanced control method with a second-order sliding mode of mismatched items
By employing a second-order sliding mode control method with mismatch terms, combined with power integral technology, the finite-time stability and chattering problems of permanent magnet synchronous motors under load disturbances and parameter perturbations are solved, thereby improving the robustness and dynamic response performance of the system.
CN116995964BActive Publication Date: 2026-06-02SOUTHEAST UNIV +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOUTHEAST UNIV
- Filing Date
- 2023-07-25
- Publication Date
- 2026-06-02
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Figure CN116995964B_ABST
Abstract
The application provides an advanced control method of a permanent magnet synchronous motor with a second-order sliding mode of unmatched items. The method establishes a second-order state equation of the permanent magnet synchronous motor, uses a second-order sliding mode control and a power integral technology, suppresses disturbances and uncertain items in the permanent magnet synchronous motor system, compensates for the unmatched items in the first derivative channel of the sliding variable, suppresses the chattering caused by the discontinuous control, and realizes accurate control of the speed of the permanent magnet synchronous motor speed regulation system. The second-order sliding mode controller designed in the application guarantees global finite time stability of the system, has strong robustness to various disturbances and uncertainties, and effectively improves the dynamic response speed and the steady state accuracy of the permanent magnet synchronous motor speed regulation system.
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