Optimal method for active disturbance rejection control of permanent magnet synchronous motor based on model reference adaptation

A permanent magnet synchronous motor, active disturbance rejection control technology, applied in motor control, motor generator control, electronic commutation motor control, etc., can solve the problem of easy system oscillation, discontinuous derivative of fal function, and many adjustable parameters of fal function and other problems, to achieve the effects of easy tuning, improved system adaptability, and small steady-state error.

Inactive Publication Date: 2021-01-26
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0004] The fal function is used as a saturation function for observer design. The degree of nonlinearity of the fal function can be adjusted. It has the characteristics of small error, large gain, large error and small gain. However, the derivative of the constructed fal function is discontinuous. If the parameters are not set properly, the system will easily oscillate. , and the fal function has many adjustable parameters, the actual adjustment parameters are more complicated

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  • Optimal method for active disturbance rejection control of permanent magnet synchronous motor based on model reference adaptation
  • Optimal method for active disturbance rejection control of permanent magnet synchronous motor based on model reference adaptation
  • Optimal method for active disturbance rejection control of permanent magnet synchronous motor based on model reference adaptation

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Embodiment Construction

[0061] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0062] see figure 1 , the present invention proposes an adaptive disturbance rejection control optimization method for permanent magnet synchronous motors based on model reference self-adaptation, which is realized through the following steps:

[0063] S1. Establish a mathematical model under the synchronous coordinate axis of the permanent magnet synchronous motor.

[0064] In this embodiment, the mathematical model under the synchronous coordinate axis of the permanent magnet synchronous motor is established

[0065]

[0066] Among them, i d is the d-axis current, i q is the q-axis current, ω m is the mechanical angular velocity of the motor rotor, R is the stator winding, and the stator inductance L=L d = L q ,p n is the number of motor pole pairs, ψ f is the permanent magnet flux linkage, J is the moment of inertia, B is the damping coeffi...

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Abstract

The invention provides an adaptive disturbance rejection control optimization method for permanent magnet synchronous motors based on model reference, and belongs to the field of permanent magnet synchronous motor sensory control. The invention pre-establishes the mathematical model of the permanent magnet synchronous motor (PMSM), first uses the inertia estimation observer to observe the size of the system inertia, and then observes the external load disturbance through the expansion state observer, and the load disturbance is compensated to the system input. The invention uses the improved sigmod function for the nonlinear saturation function of the extended state observer, the feedback part uses the improved sigmod function for nonlinear PD control, the parameters are easy to tune, the inertia and load can be observed online in real time, and the system has good robustness .

Description

technical field [0001] The invention belongs to the field of perceptual control of permanent magnet synchronous motors, and in particular relates to an optimization method for self-disturbance rejection control of permanent magnet synchronous motors based on model reference self-adaptation. Background technique [0002] In the field of permanent magnet synchronous motor control, the general motor control algorithm is a three-loop PID structure, including current loop, speed loop, and position loop. Three-loop control requires many parameters to be tuned, and there are many methods for parameter self-tuning. To achieve high-precision and high-speed control, the parameters of the three-loop PID still need to be manually adjusted by people with control experience. The permanent magnet synchronous motor is a nonlinear system, and there are still factors such as nonlinear friction resistance, external load interference, and system inertia changes in the actual motor operation pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00H02P21/14
CPCH02P21/0017H02P21/14H02P2207/05
Inventor 黄诚杨平
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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