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Active disturbance rejection control optimization method for permanent magnet synchronous motor based on model reference adaptive

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

Inactive Publication Date: 2019-07-09
UNIV OF ELECTRONIC 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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  • Active disturbance rejection control optimization method for permanent magnet synchronous motor based on model reference adaptive
  • Active disturbance rejection control optimization method for permanent magnet synchronous motor based on model reference adaptive
  • Active disturbance rejection control optimization method for permanent magnet synchronous motor based on model reference adaptive

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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 coeffic...

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Abstract

The invention provides an active disturbance rejection control optimization method for a permanent magnet synchronous motor (PMSM) based on model reference adaptive and belongs to the field of inductive control of the permanent magnet synchronous motor. The method is characterized in that through pre-establishing a mathematical model of the PMSM, firstly, an inertia estimation observer is utilizedto observe the inertia of a system, secondly, external load disturbance is observed through an extension state observer, and lastly, load disturbance is compensated to system input. The method is advantaged in that the improved sigmod function is used for a nonlinear saturation function of the extension state observer, the feedback section utilizes the improved sigmod function for nonlinear PD control, parameters are easy to set, the inertia and the load can be observed online in real time, and the system is robust.

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...

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Application Information

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IPC IPC(8): H02P21/00H02P21/14
CPCH02P21/0017H02P21/14H02P2207/05
Inventor 黄诚杨平
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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