Motor control mode fault detection method and device

A technology of motor control and fault detection, applied in the direction of motor control, control system, electrical components, etc., can solve the problem of machine explosion and other problems, achieve the effect of improving accuracy and avoiding catastrophic consequences
CN109286353AActive Publication Date: 2019-01-29SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD
Publication Date
2019-01-29

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Abstract

The invention provides a motor control mode fault detection method and device. The motor control mode fault detection method comprises the steps of obtaining first rotating speed ns of an inductive control mode and second rotating speed nsl of a non-inductive control mode under the current throttle of a motor, and calculating a relative error [delta]n between the first rotating speed ns and the second rotating speed nsl; judging whether an absolute value of the relative error [delta]n is greater than a preset threshold or not; if the absolute value of the relative error [delta]n is greater than the preset threshold, determining that the inductive control mode is abnormal; and if the absolute value of the relative error [delta]n is less than or equal to the preset threshold, determining that the inductive control mode is normal. According to the embodiment of the invention, the accuracy of motor control mode fault detection can be improved, and the motor control mode can be switched into the non-inductive control mode more timely and effectively in the case that the inductive control mode fails, thereby avoiding disastrous consequences brought about by motor control errors caused bysensor failure.
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Description

technical field

[0001] The invention relates to the technical field of motor control, in particular to a motor control mode fault detection method and device. Background technique

[0002] The safety and reliability of motor equipment, especially those used in unmanned aerial vehicles (especially industrial drones), is very important. For motor control, the sensory control mode is adopted, that is, there are sensors (magnetic encoding, linear / switching Hall, etc.) to obtain speed and position information. However, if there is a problem with the sensor, it will be disastrous for the motor control, and the whole machine will definitely explode. Therefore, how to detect whether the sensory control mode of the motor fails is particularly important.

[0003] Therefore, when the sensor used in the sensory control mode fails, how to effectively detect and judge the fault situation, and promptly switch the motor control from the currently used sensory control mode to the sensorles...

Claims

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