Control method for correcting phase of brushless DC motor without position sensor
A brushed DC motor, phase correction technology, applied in current controllers, electronic commutators, etc., can solve problems such as delay, out-of-step or stall, and inaccurate signals
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[0016] The present invention will be further described below through specific embodiments in conjunction with the drawings.
[0017] Phase correction control method for position sensorless brushless DC motor used in electric vehicle air conditioning control system
[0018] The brushless DC motor drive system using this specific implementation method is composed as follows figure 1 Shown. Including: main controller module 4, motor module 2, motor drive integrated power module (Integrated Power Module, referred to as IPM) 1, BEMF detection circuit 3 composed of BEMF acquisition module, filter circuit and comparison circuit module, and used to isolate the main control The driver module 4 and the optocoupler isolation drive module 5 of the motor drive IPM 1.
[0019] The main controller module 4 includes a single-chip microcomputer and a digital signal processor (Digital Signal Processing, DSP for short). The single-chip microcomputer sends out control signals, which are isolated by ...
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