Method and device for monitoring brake state of servo motor
A servo motor and brake device technology, applied in computer control, program control, general control system, etc., can solve the problems of burning out motor, reducing the service life of servo motor and its brake device, nodding, etc.
Active Publication Date: 2021-09-28
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
Long-term operation in this state will not only cause frequent alarms of the servo system, but also reduce the service life of the servo motor and its brake device or even burn out the motor
In addition, the enable signal and the brake signal of the servo drive are generally sent at the same time. For the vertical mechanism, because there is a mechanical time in the action of the brake device, the enable close is faster than the brake close, resulting in a slight drop in the mechanism. Falling "nodding" phenomenon
Method used
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[0047] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0048] figure 1 It is a flow chart of a method for monitoring the brake state of a servo motor shown according to an exemplary embodiment, as shown in figure 1 As shown, the method for monitoring the brake state of the servo motor includes the following steps S11-S14:
[0049] In step S11, the inductance value of the spring in the servo motor is measured in real time, and the spring is used for the brake device of the servo motor;
[0050] In step S12, according to the numerical relationship between the inductance value of the spring and the preset brake inductance threshold, the brake state of the servo motor is analyzed;
[0051] In step S13, analyze the accurac...
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The invention discloses a method and a device for monitoring the brake state of a servo motor. The method for monitoring the brake state of the servo motor includes: measuring the inductance value of the spring in the servo motor in real time, and the spring is used for the brake device of the servo motor; according to the inductance value of the spring and the preset brake inductance The numerical relationship of the threshold value analyzes the brake state of the servo motor; according to the brake state and the brake control signal of the servo motor, the accuracy of the brake control signal of the servo motor is analyzed; according to the inductance value of the spring, The brake closing time and brake release time of the servo motor are analyzed. The invention can prevent the servo driver from sending a brake release signal, but the servo motor is still in the closed state of the brake, thereby avoiding damage caused by overload operation. In addition, by analyzing the closing time of the brake, the phenomenon of "nodding" can be reduced or even eliminated to ensure the safety of personnel and equipment.
Description
technical field [0001] The invention relates to the technical field of braking, in particular to a method and device for monitoring the braking state of a servo motor. Background technique [0002] In recent years, with the rapid development of industrial production automation and intelligence, servo systems have been widely used in industrial production equipment due to their high control precision and fast response, and gradually replace the transmission of stepper drivers and stepper motors. Control System. Among them, in the vertical load part of the equipment, in order to provide the function of emergency stop or avoid falling when the equipment stops, a servo motor with a brake device is usually used in this structural part. Whether the brake device in the servo motor can work normally will directly affect the safety of personnel and equipment. If the servo drive of the equipment sends out the brake opening signal but the actual motor brake does not open, driving the...
Claims
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IPC IPC(8): G05B19/042
CPCG05B19/0428G05B2219/24024
Inventor 梁展荣郑鸿权王凯张茂盛黄斌
Owner GREE ELECTRIC APPLIANCES INC