Method for quickly detecting motor closed-loop system stalling

A closed-loop and fast technology for motors, which is applied in the direction of measuring electricity, measuring electrical variables, motor generator testing, etc., can solve the problems of slow detection speed, inability to minimize system loss, rigidity, etc., and achieve sensitive detection and high accuracy , the effect of fast detection speed

Inactive Publication Date: 2019-07-19
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Abstract
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  • Application Information

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Problems solved by technology

This method is slow in detection speed, relatively rigid, inflexible, and cannot minimize the loss of the system

Method used

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  • Method for quickly detecting motor closed-loop system stalling
  • Method for quickly detecting motor closed-loop system stalling
  • Method for quickly detecting motor closed-loop system stalling

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Embodiment Construction

[0020] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0021] Embodiments of the present invention provide a method for quickly detecting a locked-rotor of a motor closed-loop system.

[0022] Please refer to figure 1 and figure 2 , figure 1 It is a flow chart of a method for quickly detecting a motor closed-loop system stall in an embodiment of the present invention, figure 2 It is a schematic structural diagram of the motor closed-loop system in the embodiment of the present invention. The motor closed-loop system includes a motor module, an encoder module, a main control module, a motor drive module and a power supply module; the motor drive module is responsible for driving the motor according to the pwm wave output by the main control module Rotation; the motor mo...

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Abstract

The invention provides a method for quickly detecting motor closed-loop system stalling. The method comprises the following steps: establishing a motor closed-loop system model according to a PID algorithm; performing backward differential processing on motor input voltage of the motor closed-loop system model to obtain input voltage increment of a motor; performing backward differential processing on actual motor rotating speed of the motor closed-loop system model to obtain the actual rotating speed increment of the motor; when the input voltage increment of the motor is greater than a voltage increment set threshold, the actual rotating speed increment of the motor is less than the speed increment set threshold, the difference of the input voltage of the motor and the maximum value of the input voltage is less than a pressure threshold after performing n sampling cycles, and the actual rotating speed of the motor is less than the rotating speed threshold, enabling the motor closed-loop system to stall, wherein n is positive integer and not less than 1. The method provided by the invention has the advantages that the detection is sensitive, the detection speed is fast, and the precision is high.

Description

technical field [0001] The present invention relates to the field of electric motors, in particular to a method for rapidly detecting a locked-rotor of a closed-loop system of a motor Background technique [0002] For the motor speed closed-loop system, such a subsystem is embedded in the equipment in many devices to improve the stability of the system, such as driverless cars and robot servo control. will use this system. But there will be a problem in the closed-loop system, that is, when the motor is suddenly greatly damped, the system will output the maximum current due to the negative feedback effect, but this is the state of the motor is locked, so it will cause the motor and drive damage to the circuit. At present, the general detection method for this state is to detect the motor speed of the system. When the motor speed is lower than a certain threshold for about 1.5 seconds, it is determined that the system enters a stalled state, and then protective measures are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/34
CPCG01R31/343
Inventor 曾陈意谢桂辉柯帅杨佳楠
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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