Permanent Magnet Synchronous Motor Speed Loop Sliding Mode Control

Permanent Magnet Synchronous Motor (PMSM) speed loop sliding mode control represents a high-efficiency motor control technology. Through precise speed loop regulation, this approach ensures accurate motor operation while maintaining robust performance. The sliding mode control algorithm effectively addresses common challenges in motor control systems, including saturation nonlinearities and model uncertainties. Our team's developed PMSM speed loop sliding mode control technology has been validated across multiple application scenarios, demonstrating excellent performance results. We are providing this technology as a reference solution to assist in various motor control applications.

From an implementation perspective, the sliding mode controller typically employs a switching function that drives the system states toward a predefined sliding surface. Key components include: designing the sliding surface based on speed error and its derivative, implementing a discontinuous control law that switches between structures, and incorporating boundary layer techniques to reduce chattering. The control algorithm can be implemented using mathematical operations like sign() functions for switching logic and integration for error accumulation. Our solution features adaptive gain scheduling and includes anti-windup mechanisms to handle actuator saturation limits effectively.