Control method based on frequency converter and control device for walking positioning equipment

A technology for positioning equipment and control methods, which is applied in non-electric variable control, two-dimensional position/channel control, control/regulation systems, etc., and can solve problems such as spending a lot of time

Pending Publication Date: 2020-06-23
ANDRITZ CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the differences in the mathematical model and working conditions of the walking positioning equipment in each site, it will take a lot of time to try and figure out the PID parameters through experience in the site and may not be able to achieve the optimal effect

Method used

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  • Control method based on frequency converter and control device for walking positioning equipment
  • Control method based on frequency converter and control device for walking positioning equipment
  • Control method based on frequency converter and control device for walking positioning equipment

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Embodiment Construction

[0039] figure 1 A control device for a walking positioning device according to the present invention is shown. The control device includes: a motor driven by a frequency converter, the motor is used to drive the walking positioning device; a position sensor, the position sensor detects the real-time position of the walking positioning device with a certain cycle; a control unit, the The control unit calculates the real-time speed according to the detected change of the real-time position of the walking positioning device within the cycle period, wherein the control unit controls the output frequency of the frequency converter based on the above-mentioned control method based on the frequency converter, Therefore, the motor is controlled to realize high-precision positioning of the walking positioning device.

[0040] According to one aspect of the present invention, a control method based on a frequency converter is provided. The control method is used for high-precision posi...

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PUM

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Abstract

The invention relates to a control method based on a frequency converter. The control method is used for high-precision positioning of walking positioning equipment, and comprises the following steps:determining a minimum forward frequency and a minimum reverse frequency of the frequency converter corresponding to the minimum forward speed and the minimum reverse speed of the walking positioningequipment; determining the corresponding specific speeds when the walking positioning equipment outputs the specific frequencies in a positive direction and a negative direction respectively; inputting a step frequency signal and recording a frequency-speed response curve; and according to the recorded frequency-speed response curve, adopting a Ziegler-Nichols step response method to set adaptivePID parameters for the frequency converter. The invention also relates to a control device for the walking positioning equipment. The control device comprises a motor driven by the frequency converter, a position sensor and a control unit. The control unit is used for controlling an output frequency of the frequency converter based on the control method so as to make the motor realize high-precision positioning of the walking positioning equipment.

Description

technical field [0001] The invention relates to a control method based on a frequency converter, which is used for high-precision positioning of walking positioning equipment. The invention also relates to a control device for a walking positioning device. Background technique [0002] Traditional positioning control methods generally use proximity switch control or apply high and low speed control. The above method is suitable for occasions where the accuracy and positioning time requirements are not strict. However, the above-mentioned control methods are not suitable for application scenarios that require high-precision or time-optimized control positioning. [0003] The positioning control system calculates the current required target speed for the walking positioning equipment in real time by establishing the mathematical model of the ramp generator of the frequency converter to output the corresponding frequency converter frequency. However, there will be a certain ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/02
CPCG05D1/0212G05D1/0221G05D1/0223
Inventor 段湘杰施旭杰邢凯
Owner ANDRITZ CHINA
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