Trapezoidal wave type in phase one

 Brushless motor driven trapezoidal wave control mode of the frame. motor parts Here a PI control circuit is used to to control current. We use the actual measurement of the current demand and current comparison, get a deviation signal. This deviation signal through the integral and magnified and produce an output correction value, the deviation value is used to reduce the error. This spare parts produced by P - I control loop correction value through PWM setting, then to provide output bridge road. The purpose of this procedure is to ensure that any of the current in the coil remained stable state. Change of phase current control part without any contact. Motor hall sensor in fan motor the wholesalemotor.blogspot.com position signal is used to choose which a pair of coil way need to pass to current corresponding to the output of the bridge, while the other bridge road keep current status. Current sensing circuit is mainly used to real-time current of electric coil, and the feedback signals to the current control loop.