Method for building simplified self interference rejection controller of permanent magnet synchronous machine

Abstract

A simplified self noise-immunity controller formation method of PMSM (permanent magnet synchronous motor) is applicable to the high performance control of PMSM. It constructs the expanding voltage-controlled inverter (2) by the voltage control voltage source inverter (1) and space vector pulse width modulation; it constructs a composite controlled object (10) by the expanding voltage-controlled inverter and current controller (3), the coordinate transformation (4), the permanent magnet synchronous motor (7), the workload (8) and the photoelectric encoder (9); it constructs the second-order state observer (52) by compositing the input and output signals of the controlled object; It constructs the composite speed feedback (54) by the weighted sum of the two speed measurement value; it constructs the composite controller (53) by the superposition of the generalized rate error square controller (51) and the compensation value of the system perturbation (-z2 / b); it series connects the composite controller before the composite controlled object, and finally, it constructs the simplified self noise-immunity controller (5) by the composite controller and the expanding second-order state observer.

Description

technical field [0001] The invention relates to a construction method of a simplified active disturbance rejection controller for a permanent magnet synchronous motor, which is suitable for high-performance servo control of the permanent magnet synchronous motor and belongs to the technical field of AC servo control systems. Background technique [0002] The permanent magnet synchronous motor is a complex nonlinear system, its parameters will change during operation, and there are often serious external disturbances, so the control of the permanent magnet synchronous motor is relatively difficult. Classical control theory is difficult to overcome the influence of factors such as disturbance and large-scale parameter perturbation on system performance, and it is difficult to obtain satisfactory control system performance. With the development of control theory, many advanced algorithms have been applied to the control research of permanent magnet synchronous motors, such as s...

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Problems solved by technology

[0003] The literature introduced the simulation research of standard ADRC in the speed loop of permanent magnet synchronous motor. The first-order tracking differentiator, the second-order extended state observer, the first-order nonlinear state error feedback controller, and the ADRC controller are simulated. The simulation results show that the speed regulation of the permanent magnet synchronous motor In the system, the active disturbance rejection controller has better dynamic and steady-state performance than the traditional PI controller, and the anti-disturbance and robustness of the system have also been improved, but this literature is only a simulation study, and the automatic The three modules of the disturbance rejection controller all use complex nonlinear functions, and the ADRC controller is not specifically implemented

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