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Updated: Jun 13, 2025

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Application of sliding mode variable structure control algorithm in PMSM vector control system in complex

Haoran Cui1

  • 1College of Information Science and Engineering, Northeastern University, Shenyang, China.

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|September 13, 2024
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Summary
This summary is machine-generated.

A new Asymptotic Sliding Mode Control (ASMC) algorithm effectively suppresses chattering in permanent magnet synchronous motor (PMSM) control. This advanced method enhances system stability and performance, offering smoother outputs and improved speed regulation quality.

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Area of Science:

  • Electrical Engineering
  • Control Systems
  • Robotics

Background:

  • Industrial production demands high-performance control systems.
  • Traditional sliding mode control suffers from significant chattering, impacting precision.
  • Permanent magnet synchronous motors (PMSM) require advanced control for optimal performance.

Purpose of the Study:

  • To design a novel control algorithm, Asymptotic Sliding Mode Control (ASMC), to address the chattering issue in sliding mode control.
  • To improve the performance and precision of permanent magnet synchronous motor (PMSM) control systems.
  • To enhance the speed regulation quality and self-stability of PMSM.

Main Methods:

  • Constructed a traditional sliding mode exponential approximation law control model.
  • Developed a state space and control function based on sliding mode control principles.
  • Integrated the ASMC algorithm with sliding mode control by eliminating jitter factors for precise PMSM control.

Main Results:

  • ASMC significantly suppressed system chattering, reducing jitter amplitude by 1/3.
  • The system demonstrated rapid stabilization within 0.2-0.3 seconds in simulations.
  • ASMC exhibited strong self-stability, with minimal overshoot (2.8%) and stable output torque under parameter variations.
  • Actual experiments showed reduced current command oscillation and smaller output fluctuation under no-load disturbance.

Conclusions:

  • The ASMC algorithm effectively mitigates the chattering problem inherent in sliding mode control.
  • ASMC improves system approaching speed and enhances the overall speed regulation quality of PMSM.
  • This novel algorithm holds significant theoretical and practical value for PMSM vector control systems.