Linear active disturbance rejection control-based permanent-magnet synchronous motor speed regulation system

Abstract

The invention discloses a linear active disturbance rejection control-based permanent-magnet synchronous motor speed regulation system. The linear active disturbance rejection control-based permanent-magnet synchronous motor speed regulation system comprises a first-order TD module, a rotational speed signal processing module, a first-order LSEF module, a disturbance compensation processing module, a direct torque control (DTC) module, a permanent magnet synchronous motor (PMSM) speed modulation module, a first control input gain module, a second control input gain module and a first-order ESOmodule. A feedback inhibition anti-integral saturation method is applied to an active disturbance rejection controller, so that the system has anti-integral saturation performance; compared with a traditional active disturbance rejection controller, the system has anti-integral saturation capability, integral saturation of the controller is prevented from affecting performance of the controller,the rate of withdrawing integral saturation is controllable, and the active disturbance rejection control strategy can be further optimized; and meanwhile, based on linear active disturbance rejectioncontrol, the system structure can be simplified, the anti-interference performance and the robustness of the motor speed regulation system can be improved by linear active disturbance rejection control, and favorable combination of rapid response and no overshoot is achieved.

Description

technical field [0001] The invention belongs to the field of permanent magnet synchronous motors, and in particular relates to a permanent magnet synchronous motor speed regulation system based on linear active disturbance rejection control. Background technique [0002] Permanent magnet synchronous motors are widely used in the field of transmission because of their small size, high efficiency and energy saving, high power density, and light weight. However, it has the characteristics of multi-variable, strong coupling, variable parameters, and nonlinearity, and traditional control algorithms are difficult to meet its high-performance control requirements. [0003] The main control strategies of permanent magnet synchronous motors are vector control and direct torque (DTC) control. Some people have applied ADRC to the simulation research of vector control of permanent magnet synchronous motors. Active disturbance rejection control is a new type of control technology that d...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the nonlinear active disturbance rejection control is difficult to make the system achieve high-precision control in the above background technology, the present invention provides a permanent magnet synchronous motor speed regulation system based on linear active disturbance rejection control

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