Electric motor control for motor vehicle, has mixer to output control signal corresponding to sum of levels of sound flow signal, which produces artificial operating noise during activation of motor, to levels of direct current signal

摘要

The control (1) has a sound signal generator (3) for producing a sound flow signal, and a mixer (4) for mixing the sound signal with a power supply direct current signal. The mixer outputs a control signal corresponding to a sum of the levels of the flow signal to the levels of the direct current signal to control an electric motor (2). The sound signal produces an artificial operating noise during the activation of the motor.