Permanent magnet brushless motor Hall position sensor fault diagnosis method
A permanent magnet brushless motor and sensor fault technology, applied in the direction of electric/magnetic position measurement, using electric devices, electromagnetic measuring devices, etc., can solve the problems of poor practicability, achieve good practicability, improve reliability, and ensure reliable operation Effect
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[0025] The following examples refer to Figure 1-4 .
[0026] In this embodiment, TMS320F2812 of Texas Instruments is used as the control chip, IR2136 is used as the driving chip, and a three-phase bridge circuit is selected to drive the permanent magnet brushless motor.
[0027] The specific steps of the fault diagnosis method of the permanent magnet brushless motor Hall position sensor of the present invention are as follows:
[0028] Step 1: When the permanent magnet brushless motor is running, the three-way Hall position sensor can output up to eight states of "000, 001, 010, 011, 100, 101, 110, 111", among which "000, 111" is Failure status. A one-dimensional array Hall with a length of 8 is used to represent these eight states respectively, among which Hall[0] and Hall[7] are fault states. The system judges whether the Hall position sensor is present by detecting whether the Hall sensor has a fault state. malfunction. If the Hall position sensor has a "111" fault, then Faul...
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