Patent ID: 9219436
Filing Date: 2015-12-22
Classification: H02P

Abstract:
1. A driving control device of a motor, comprising: a motor driving unit, which receives power from a power supply and drives a motor in response to a driving control signal; and a control unit, which detects a rotational position of a rotor based on a detection signal from a rotation sensor and determines an energization pattern applied to an armature coil based on the detected rotational position of the rotor, wherein the control unit starts rotation control by a preset first energization pattern when activating of the motor, wherein the control unit controls the motor driving unit so that, just before switching the energization pattern from the first energization pattern to the second energization pattern, an ON duty of the PWM signal in the first energization pattern is set to be lower than an ON duty of the PWM signal just before the switching and then the energization pattern is switched from the first energization pattern to the second energization pattern.