PULSE WIDTH MODULATION SIGNALS GENERATION METHOD FOR DIRECT CURRENT MOTORS CONTROL Russian patent published in 2018 - IPC H03K7/08 

FIELD: power equipment.

SUBSTANCE: invention relates to the power conversion equipment, namely to controlled direct current electric motors. Pulse width modulation signals generating method for the DC motors controlling, including the universal computer based control system, digital communication channel using the rs-485 start-stop interface protocol, rs-485 digital start-stop communication channel interface circuit with the electronic power key and the controlled DC motor, at that, the pulse signal generation for the DC motor control is carried out in the control computer itself, and the pulse control signal is transmitted via the communication channel with the rs-485 start-stop data transfer protocol, to the electronic power key, wherein the transmitted signal pulse start-stop units are divided into control action periods, in which series of the certain number of the start-stop interface protocol signal bytes is software-based generated, which in the integral level is the required current value, which sets the DC motor speed.

EFFECT: technical result is the device design simplification, increase in its reliability.

1 cl, 7 dwg