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Fast tracking control system and method for permanent magnet brushless DC motor servo system

A permanent magnet brushless DC, servo control system technology, applied in AC motor control, control system, single motor speed/torque control, etc., can solve the problems of complex implementation of the new variable speed reaching law and the inability to control system convergence. , to achieve the effect of improving control quality and robust performance, reducing chattering problems, and high-precision tracking control

Active Publication Date: 2022-06-21
武汉海卓泰克科技有限公司
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AI Technical Summary

Problems solved by technology

Although this method can solve the problem of sliding mode chattering to a certain extent, it is too complicated to design a new variable speed reaching law, and the controller based on the traditional linear sliding mode surface function design cannot make the control system converge to expected trajectory

Method used

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  • Fast tracking control system and method for permanent magnet brushless DC motor servo system
  • Fast tracking control system and method for permanent magnet brushless DC motor servo system
  • Fast tracking control system and method for permanent magnet brushless DC motor servo system

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Embodiment 1

[0071] see figure 2 As shown, embodiment 1 provides a kind of fast track control method of permanent magnet brushless DC motor servo system, based on the fast track control system 10 of above-mentioned permanent magnet brushless DC motor servo system, comprising the following steps:

[0072] S1. Establish a mathematical model of the permanent magnet brushless DC motor servo system including parameter uncertainty, which is constructed as follows:

[0073] S11. The electromagnetic torque equation of the permanent magnet brushless DC motor can be expressed as

[0074] T e =(e a i a +e b i b +e c i c ) / ω;

[0075] Among them, ω is the mechanical angular velocity of the permanent magnet brushless DC motor, e a 、e b 、e c Respectively, the counter electromotive force of ABC three-phase stator, i a i b i c are the phase currents of the three-phase stator respectively, T e is the electromagnetic torque.

[0076] S12. The motion equation of the brushless DC motor can be...

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Abstract

The invention provides a fast tracking control system and method of a permanent magnet brushless DC motor servo system. The control system is typically connected with a permanent magnet brushless DC motor; the control system includes a non-singular terminal sliding mode surface function module, an adaptive variable speed reaching law function module and a servo control system fast tracking control module. The control method first establishes the mathematical model of the permanent magnet brushless DC motor servo system including parameter uncertainty; secondly, designs an adaptive variable speed reaching law algorithm, which can adaptively adjust the reaching law according to the distance between the system state quantity and the equilibrium point Speed, and combining the reaching law algorithm with non-singular terminal sliding mode control, a fast tracking control method suitable for permanent magnet brushless DC motor servo system is designed. The control method realizes the high-precision tracking control of the permanent magnet brushless DC motor servo system, reduces the chattering problem of the sliding mode, and improves the control quality and robust performance of the servo control system.

Description

technical field [0001] The invention relates to the technical field of permanent magnet synchronous motor control, in particular to a fast tracking control method for a permanent magnet brushless DC motor servo system. Background technique [0002] Permanent magnet brushless DC motors are widely used in industry, aerospace and military fields due to their advantages of large starting torque and high power factor. Although the brushless DC motor servo control system based on traditional PI control can achieve satisfactory control effect to a certain extent, it is limited to the bandwidth of the PI controller and cannot meet the actual performance when it is used in occasions with relatively high control performance requirements. needs. [0003] In order to solve this problem, many advanced control algorithms have been proposed. Sliding mode control has attracted much attention due to its advantages of simple controller design and strong robustness, but the control performan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/08H02P6/34H02P23/00H02P23/04
CPCH02P6/08H02P6/34H02P23/0009H02P23/0022H02P23/0077H02P23/04
Inventor 袁雷卿意
Owner 武汉海卓泰克科技有限公司
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