Temperature compensation for DC motor PWM applications

摘要

Motor control systems and methods. A motor control system includes a temperature compensated power supply configured to receive a supply voltage and output a temperature compensated reference voltage. The reference voltage varies according to an ambient temperature of the motor control system. The motor control system includes a microcontroller configured to receive the temperature compensated reference voltage and a sensed motor current and to produce a corresponding pulse-width-modulated (PWM) motor control signal. The microcontroller is configured to increase a duty cycle of the PWM motor control signal as a function of the temperature compensated reference voltage. The motor control system includes a motor configured to be controlled according to the duty cycle of the motor control signal.