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Adaptive sliding mode current control with sliding mode disturbance observer for PMSM drives
Yongting Deng1, Jianli Wang1, Hongwen Li1
1Changchun Institute of Optics, Fine Mechanic and Physics, Chinese Academy of Science, Changchun, Jilin 130033, China.
ISA Transactions
|December 15, 2018
Summary
A new hybrid control strategy enhances permanent magnet synchronous motor (PMSM) performance by combining adaptive sliding mode control and a sliding mode disturbance observer (SMDO). This improves response speed, tracking accuracy, and robustness against uncertainties and disturbances.
Area of Science:
- Electrical Engineering
- Control Systems
- Robotics
Background:
- Permanent magnet synchronous motors (PMSMs) are crucial for electric drives but face challenges with model uncertainties and external disturbances.
- Existing control methods often struggle to balance fast response, accuracy, and robustness.
Purpose of the Study:
- To develop an advanced hybrid control strategy for PMSM current control.
- To enhance the dynamic performance and robustness of PMSM drive systems.
Main Methods:
- A hybrid control strategy combining adaptive sliding mode control (SMC) and a sliding mode disturbance observer (SMDO).
- An adaptive law integrated into the SMC for improved parameter variation handling.
- SMDO implementation for disturbance compensation and gain reduction.
Main Results:
- The proposed strategy significantly improves the speed of response and tracking accuracy of the PMSM current loop.
- Demonstrated strong anti-disturbance capability against external disturbances and parameter variations.
- Experimental validation confirms enhanced overall performance of the PMSM drive system.
Conclusions:
- The hybrid adaptive SMC and SMDO strategy offers a robust and effective solution for PMSM current control.
- This approach enhances PMSM drive system performance in dynamic and uncertain environments.
- The method provides a valuable contribution to advanced electric drive control techniques.
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