Model predictive controller for eliminating transmission backlash in multi-servo drive systems of heliostats
By employing a dual-motor system model predictive controller based on a backlash dead zone model in a heliostat multi-servo drive system, and utilizing an improved dead zone model and backlash elimination strategy, the problem of decreased control accuracy caused by backlash was solved, achieving rapid and stable speed regulation and high-precision position control, thereby improving the efficiency of solar energy collection and power generation.
Patent Information
- Application Number
- CN202310381567.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-04-11
- Publication Date
- 2026-08-14
- Estimated Expiration
- 2043-04-11
AI Technical Summary
Backlash in a heliostat multi-servo drive system leads to a decrease in control accuracy, affecting solar energy collection efficiency and power generation efficiency.
A model predictive controller for a dual-motor system based on a backlash dead zone model is adopted. By improving the dead zone model and backlash elimination strategy, a dynamic model of the dual-motor system is established, and a model predictive speed and position controller is designed. Feedback correction and an extended state observer are used to eliminate the backlash effect.
It achieves rapid stabilization of the heliostat angle, speed adjustment without overshoot, and high-precision position control, improving the system's robustness and dynamic response performance, and reducing the impact of backlash on other system performance.