An adaptive dynamic surface control method for chaotic system of 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: 2022-07-05
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 for chaotic system of permanent magnet synchronous motor
  • An adaptive dynamic surface control method for chaotic system of permanent magnet synchronous motor
  • An adaptive dynamic surface control method for chaotic system of permanent magnet synchronous motor

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Embodiment 1

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

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

[0057] The system dynamics 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] where: 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, that is, L=L d =L q ;ψ r Permanent magnet flux; B is viscous friction coefficient; J is moment of inertia; n p is the polar l...

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Abstract

The invention discloses an adaptive dynamic surface control method for a chaotic system of a permanent magnet synchronous motor. The method includes (1) establishing a mathematical dynamic model of the chaotic system of a permanent magnet synchronous motor; (2) approximating unknown unknowns in the system equation by using a neural network For the nonlinear term, a first-order low-pass filter is introduced to replace the derivative of the virtual control for the dynamic equation of the permanent magnet synchronous motor; (3) the adaptive rate is designed to update the weights of the neural network. The invention uses the RBF network to approximate the nonlinear unknown item of the system model, the nonlinear item, and the nonlinear damping item to overcome the external disturbance; the first-order low-pass filter is introduced to replace the derivative of the virtual control, so as to eliminate the inversion control method. The expansion phenomenon of the differential term; 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 of a chaotic system of a permanent magnet synchronous motor. Background technique [0002] As a typical mechatronic product, permanent magnet synchronous motor has the advantages of simple structure, reliable operation, high power density, relatively large torque inertia and high torque to current ratio. It is widely used in aerospace, robotics, CNC machine tools, vehicle engineering It has been widely used in other fields, but the influence of uncertain unknown parameters, external disturbance and other factors on the performance of nonlinear permanent magnet synchronous motor system has not been comprehensively considered. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to provide an adaptive dynamic surface control method for a chaotic system of a permanent magnet synchronous motor, so as to solve the problems existing in the above-...

Claims

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Application Information

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Patent Type & AuthorityPatents(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
OwnerGUIZHOU UNIV