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Online debugging system of brushless DC motor

A technology of brushing DC motor and debugging system, applied in control system, control generator, vector control system, etc., can solve problems such as large error, and achieve the effect of fast control response, easy and timely regulation, and easy operation.

Inactive Publication Date: 2016-12-21
SICHUAN NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art, to propose a brushless DC motor online debugging system, which can solve the problem of large errors in the actual control system by obtaining the PID controller based on the model-based matlab simulation

Method used

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  • Online debugging system of brushless DC motor
  • Online debugging system of brushless DC motor
  • Online debugging system of brushless DC motor

Examples

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Embodiment

[0059] Embodiment: For example, the motor speed needs to be stabilized to 1200 rpm through the PID link, and the current Kp, Ti, and Td values ​​are all 0.000, that is, the PID link has not played a substantial role for the time being.

[0060] When debugging, start with Kp first, for example, give Kp=0.05 to get the real-time speed curve, but now I don’t know whether this value is too large or too small, and then try to give a larger value Kp=0.2 to get such Image 6 In the curve (below), it is obvious that the rotational speed value has already oscillated violently, and the static stability is very poor. Comparing the results of these two times, we can see that Kp=0.2 is too large. Then try Kp=0.1, a value between 0.05 and 0.2, to get as Image 6 (Above) curve, the result is relatively good, and a relatively fast response speed and good stability are obtained. Therefore the Kp parameter is determined as Kp=0.1.

[0061] Then adjust the differential parameter Td. Similar ...

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Abstract

The invention discloses an online debugging system of a brushless DC motor (BLDC), and the online debugging system relates to the technical field of brushless DC motors. The online debugging system comprises a PID closed-loop speed regulating unit, a motor work site monitoring and control unit, an upper computer remote monitoring and control unit and a lower computer unit, wherein the PID closed-loop speed regulating unit comprises a controller module, a Hall element module, a speed measuring module, a PWM module and a PID speed regulating module; the motor work site monitoring and control unit comprises a keyboard circuit module and a display circuit module; and the upper computer remote monitoring and control unit is used for sending a command to the lower computer unit and receiving data fed back by the lower computer unit. The online debugging system of the brushless DC motor has the beneficial effects that: 1, the BLDC online PID parameter debugging method is simple in operation, and can realize detection and control of operating data of the BLDC in an industrial site and at far distance; 2, and the relevant parameters of BLDC operation can be displayed on an upper computer in the form of curves.

Description

technical field [0001] The invention relates to the technical field of brushless direct current motors, in particular to an online debugging system for brushless direct current motors. Background technique [0002] Brushless DC motors (BLDC) are widely used in automobiles, printers, aviation and other occasions that require precise positioning control due to their long life, low noise, high speed, and high efficiency. In order to improve the control performance in practical industrial applications, PID technology is usually used for closed-loop regulation of position, speed and power of BLDC. The optimal parameters P, I, and D in PID control vary with different loads and application environments. [0003] In the existing BLDC debugging technology, the optimal PID parameters are initially determined according to the experience of field engineers, and the online debugging is repeatedly modified offline to gradually obtain satisfactory values. Obviously, this method has extre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00
CPCH02P21/0003
Inventor 宰文姣汪华章何可
Owner SICHUAN NORMAL UNIVERSITY
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