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A computer-readable storage medium and an AC permanent magnet servo system using the medium

A storage medium and servo system technology, applied in control systems, vector control systems, control generators, etc., can solve problems such as phase lag, high given speed and given frequency, limited speed controller, etc., to achieve increased bandwidth, The effect of speeding up the angular velocity response and reducing the phase lag

Active Publication Date: 2020-02-04
威科达(东莞)智能控制有限公司
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AI Technical Summary

Problems solved by technology

However, the continuous speed curve of acceleration means that the speed changes frequently and the given frequency of the given speed is higher
Since the PI regulator is a linear regulator, the proportional gain of the PI regulator cannot be infinitely increased due to the influence of the speed sampling accuracy and control cycle of the linear regulator
When the frequency of the given speed is high, the actual feedback speed of the PI regulator cannot quickly track the given speed, which limits the frequency range in which the servo system can effectively track the given speed, and also limits the speed of the speed controller of the servo system Ring Response Bandwidth
In addition, due to the limited sampling accuracy, too large a proportional gain will bring a large speed disturbance, making the servo system unstable
Therefore, the traditional PI speed control algorithm cannot track the given speed given by the high frequency in real time, and will produce a certain phase lag

Method used

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  • A computer-readable storage medium and an AC permanent magnet servo system using the medium
  • A computer-readable storage medium and an AC permanent magnet servo system using the medium
  • A computer-readable storage medium and an AC permanent magnet servo system using the medium

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Embodiment Construction

[0036] The present invention is further described in conjunction with the following examples.

[0037] There is a memory in the AC permanent magnet servo system, which stores a program for adjusting the output angular velocity ω of the speed controller in the AC permanent magnet servo system, and the processor of the AC permanent magnet servo system implements the following steps when executing the above program .

[0038] 1. Torque current i q *Acquisition step, the processor is at the input end of the speed controller, according to the given angular velocity ω* of the speed controller, while ignoring the load torque T of the servo system L In the case of torque current i q *. Specifically, through the Calculate the torque current i q *, where K is the load inertia coefficient.

[0039] 2. Torque current i q * Feedforward steps such as figure 1 As shown, the processor converts the torque current i q * Feedforward to the output of the speed controller.

[0040] 3. C...

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Abstract

The invention relates to the technical field of AC permanent magnet servo systems, in particular to a computer readable storage medium and an AC permanent magnet servo system of using the same. A computer program is stored in the medium and can be executed by a processor of the AC permanent magnet servo system. Torque current iq* is obtained through a given angular speed omega* and is fed forwardto an output end of a speed controller, so that an output angular speed omega can be directly obtained without through a PI adjuster, the angular speed response in the servo system is greatly accelerated, the bandwidth of a speed loop of the servo system is increased and the phase lag of a feedback speed on a given rotating speed is reduced.

Description

technical field [0001] The present invention relates to the technical field of AC permanent magnet servo system, in particular to a computer-readable storage medium and an AC permanent magnet servo system using the medium. There is a computer program stored in the medium, and the computer program can be processed by the AC permanent magnet servo system. device execution. Background technique [0002] At present, the control strategy of the servo system basically adopts the traditional vector control, and the speed controller generally adopts the PI regulator. The PI regulator adopts the PI control algorithm and belongs to the linear regulator. The PI regulator mainly adjusts the speed (angular speed) error. The proportional gain can make the speed error converge quickly, and the integral gain can eliminate the static error of the speed. The combination of the two can Converge the speed error to zero quickly to achieve the purpose of making the feedback speed track the given...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00
CPCH02P21/00
Inventor 蓝希清
Owner 威科达(东莞)智能控制有限公司
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