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Keyword: Hall memory function, Motor parts; Digital filter, Square wave parameters detection Abstract. In modern vehicles, part of the DC motor driven components use DC motor with hall of memory function, it is using the square wave produced by the Hall sensor as dc motor position feedback signal of the mechanical parts , these parts should pass position memory test to determine whether qualified after assembled. This paper use a Hall sensor signal data acquisition system based on virtual instrument software , when the DC motor is rotating ,using the AD card collect the voltage square wave signals produced by the Hall sensor, and using graphical programming language for digital filtering and data analysis processing to get the signal parameters such as the duty-cycle and so on, and according to the given parameters to judge. Experiments show that compared to the full-scale square wave counting method, the parameter test of the system has the advantages of high precision, fast response characteristics.

The M otor Drive Part Hall Memory Function Detection