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Induction motor compound control method based on fast finite time control

A limited time, induction motor technology, applied in the direction of controlling generators, controlling electromechanical brakes, controlling electromechanical transmissions, etc., can solve problems such as poor disturbance compensation speed, inability to converge the induction motor system, and insufficient anti-disturbance performance, and achieve improved Dynamic response performance, good disturbance suppression ability, and the effect of improving the overall performance

Pending Publication Date: 2022-04-26
XIAN UNIV OF TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide a compound control method for induction motors based on fast finite time control, which solves the problem that the induction motor system in the prior art cannot converge in a finite time, and the anti-disturbance performance is insufficient in the face of complex working conditions, and the disturbance compensation speed is not good. The problem

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  • Induction motor compound control method based on fast finite time control
  • Induction motor compound control method based on fast finite time control
  • Induction motor compound control method based on fast finite time control

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Embodiment Construction

[0056] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0057] The present invention is based on the composite control method of the induction motor based on fast finite time control, and the finite time disturbance observer uses the finite time estimation of the disturbance as compensation to improve the rapidity and anti-disturbance of the disturbance estimation of the motor under complex working conditions, and is compatible with the finite time controller The combination further improves the dynamic performance of the system, thereby realizing high-performance control of the induction motor.

[0058] Design a finite-time controller in the speed loop, improve the dynamic performance of the induction motor vector control system through finite-time control, and improve the system's fast convergence ability and anti-disturbance performance; design a fast finite-time disturbance observer on the basi...

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Abstract

The invention discloses an induction motor compound control method based on fast finite time control, which is specifically implemented according to the following steps: step 1, establishing a mathematical model of an induction motor under a two-phase rotating coordinate system, and decoupling the mathematical model to realize decoupling control of the induction motor; 2, designing a speed loop finite time controller of an induction motor vector control system according to a finite time control theory; 3, designing a fast finite time disturbance observer based on an induction motor vector control system; and step 4, combining the speed loop finite time controller obtained in the step 2 and the fast finite time disturbance observer obtained in the step 3 to obtain a fast finite time composite controller, and realizing high-performance control of the induction motor. The method solves the problems that an induction motor system in the prior art cannot converge in finite time, the disturbance rejection performance is insufficient in the face of complex working conditions, and the disturbance compensation speed is poor, and high-performance control over the induction motor is achieved.

Description

technical field [0001] The invention belongs to the technical field of high-performance induction motor control, and in particular relates to a compound control method for induction motors based on fast and limited time control. Background technique [0002] Induction motors are widely used in various industrial control and frequency conversion speed regulation systems due to their advantages of simple structure, low cost, and easy maintenance; induction motors are nonlinear systems with strong coupling, complex working conditions, and time-varying parameters. Strategy has been widely concerned and researched. However, with the deepening of the control theory and the gradual improvement of application requirements, the traditional induction motor control strategy has been unable to achieve the high-performance control of the motor speed control system, and the traditional control strategy has the advantages of rapidity, robustness and anti-disturbance of the system. There i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/13H02P27/08
CPCH02P21/13H02P27/08
Inventor 尹忠刚高翌轩高峰涛刘静
Owner XIAN UNIV OF TECH