Research On NC Sensorless Brushless DC Motor 120W Governor Driving Method

Brushless DC motor is more and more widely used with high efficiency,low electromagnetic interference,low noise,long useful life and low maintenance cost.Futher more motor without position sensor can be further reduced in size,simplified control circuit.Most brushless DC motor using analog signals to transmit data.With the increase in applications,anti-interference ability of the analog signal can not meet people's needs.For its unique way to rounding brush commutation and position sensors,Sensorless brushless DC motor use a method of frictionless,low loss electronic commutator and electromagnetic detection position.How to run an electronic commutator,electromagnetic methods to detect the location and brushless DC motor is coupled to the organic shipped together become the focus of the current issue of brushless DC motor control needs to be addressed.This topic through in-depth study on the operation mechanism of sensorless brushless DC motor design a CNC Brushless DC Motor 120W governor.Determining rotor position by sensing the electromotive force,to build accurate and stable hardware and software to start the motor.It covers the selection of the motor for its starting run and safety testing;From the start characteristics of the system,analysis of the mechanical properties,to an initial the transfer function;From a variety Details processing of the software,anti-interference digital control to human computer interaction;From a variety of hardware chip selection to the unique design optimization;In ensuring stable and efficient work of premise maximize simplify circuit design in order to reduce the weight and volume of the drive to save production costs.This is designed to achieve precise control of the brushless DC motor speed,reduce its weight and volume,improve its anti-jamming capability and expand its scope in the field.