An adaptive dynamic surface control method of a chaotic system of a permanent magnet synchronous motor

A permanent magnet synchronous motor, dynamic surface control technology, applied in the direction of motor generator control, electronically commutated motor control, control system, etc., can solve problems that have not been considered comprehensively, achieve good effectiveness and robustness, and eliminate expansion Phenomenon, effects of unknown suppression parameters

Active Publication Date: 2019-01-18
GUIZHOU UNIV
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Problems solved by technology

[0002] As a typical mechatronic product, the permanent magnet synchronous motor has the advantages of simple structure, reliable operation, high power density, large torque inertia ratio and high torque-current ratio. and other fields have been widely used, but they have not comprehensively considered the influence of factors such as uncertain unknown parameters and external disturbances on the performance of nonlinear permanent magnet synchronous motor systems.

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  • An adaptive dynamic surface control method of a chaotic system of a permanent magnet synchronous motor
  • An adaptive dynamic surface control method of a chaotic system of a permanent magnet synchronous motor
  • An adaptive dynamic surface control method of a chaotic system of a permanent magnet synchronous motor

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Embodiment 1

[0055] Embodiment 1: A method for adaptive dynamic surface control of a chaotic system of a permanent magnet synchronous motor, the method comprising the following steps:

[0056] (1) Establish the nominal dynamic model of the permanent magnet synchronous motor system:

[0057] The system dynamic equation of the surface-mounted permanent magnet synchronous motor (S permanent magnet synchronous motor) in the d-q coordinate system can be expressed as:

[0058]

[0059] In the formula: is the armature current component of the equivalent current on the d and q axes; is the mechanical angular velocity of the motor rotor; is the induced electromotive force of the stator voltage on the d and q axes; R is the stator armature resistance; is the load torque; L is the armature inductance, and the component L of the inductance on the d and q axes d , L q Equal, ie L=L d =L q ; r Permanent magnetic flux; B is the viscous friction coefficient; J is the moment of inertia; n p...

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Abstract

The invention discloses an adaptive dynamic surface control method of a chaotic system of a permanent magnet synchronous motor. The method comprises the following steps: (1) establishing a mathematical dynamic model of the chaotic system of the permanent magnet synchronous motor; (2) introducing first-order low-pass filter to replace the derivative of virtual control for the dynamic equation of permanent magnet synchronous motor by using neural network to approximate the unknown nonlinear term in the system equation; (3) designing the adaptive rate to update the weights of neural network. Theinvention uses RBF network to approximate the non-linear unknown term and the non-linear term of the system model, and the non-linear damping term is overcome to overcome the external disturbance. A first-order low-pass filter is introduced to replace the derivative of the virtual control to eliminate the expansion of the differential term in the inversion control method. The invention can effectively suppress the influence of unknown parameters, chaotic oscillation and external disturbance on the system, and has good effectiveness and robustness.

Description

technical field [0001] The invention relates to an adaptive dynamic surface control method for a chaotic system of a permanent magnet synchronous motor. Background technique [0002] As a typical mechatronic product, the permanent magnet synchronous motor has the advantages of simple structure, reliable operation, high power density, large torque inertia ratio and high torque-current ratio. and other fields have been widely used, but they have not comprehensively considered the influence of factors such as uncertain unknown parameters and external disturbances on the performance of nonlinear permanent magnet synchronous motor systems. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an adaptive dynamic surface control method for the chaotic system of a permanent magnet synchronous motor to solve the above-mentioned problems in the prior art. [0004] The technical solution adopted by the present invention is: a m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/05H02P21/00
CPCH02P21/0014H02P21/0017H02P21/05
Inventor 张钧星罗绍华李少波牛程程周鹏冯陈定赵乐
Owner GUIZHOU UNIV
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