Abnormal detection device and method for electromagnetic brake

Abstract

The invention discloses an abnormal detection device and method for an electromagnetic brake, and relates to the technical field of electromechanical control. Including signal controller, optocoupler input circuit, switch control circuit, detection circuit, optocoupler output circuit and processor; signal controller, optocoupler input circuit, switch control circuit, electromagnetic brake device, detection circuit and optocoupler output circuit Connect in sequence, the processor is connected with the signal controller and the optocoupler output circuit, the processor controls the signal controller to send the control signal; the optocoupler input circuit couples the control signal into the switch control circuit; the switch control circuit controls the electromagnetic brake device according to the control signal The detection circuit detects the electromagnetic brake device and obtains a detection signal; the optocoupler output circuit couples the detection signal into the processor; the processor determines whether the electromagnetic brake device is abnormal according to the control signal and the detection signal. The present invention can accurately judge whether the state of the electromagnetic brake is abnormal according to the detection signal.

Description

technical field [0001] The invention relates to the technical field of electromechanical control, in particular to an abnormal detection device and method for an electromagnetic brake. Background technique [0002] With the steady advancement of the "Made in China 2025" plan, industrial robots are being used on a large scale. Taking a six-joint industrial robot as an example, there is at least one joint that can perform work against gravity. When the motor in the joint does not work, or when the industrial robot is not powered, in order to ensure that the joint of the industrial robot does not sag, the motor with a brake is usually selected as the driving motor. In the industrial robot industry, the electromagnetic brake is generally used The motor of the gate is used as the driving motor of the industrial robot. [0003] However, in the prior art, only a control signal to open or close the electromagnetic brake of the motor can be issued, but it is impossible to determine...

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Problems solved by technology

[0003] However, in the prior art, only a control signal to open or close the electromagnetic brake of the motor can be issued, but it is impossible to determine whether the electromagnetic brake is indeed opened or closed.

The user does not know the specific working status of the electromagnetic brake of the motor. When the electromagnetic brake device fails, the user cannot obtain the fault information in time, which poses a safety hazard.

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