Patent ID: 7065966
Filing Date: 2006-06-27
Classification: F02B,Y02T

Abstract:
1. A position control method by motor drive comprising: rotating a rotor of said motor drive according to the given target opening, and detecting the opening of a movable vane by an encoder, said motor opening and shutting a passage of an intake air pipe to a turbo charger of an automobile by the movable vane, and controlling the movable vane in the passage of said intake air pipe to reach the target opening, wherein the rotational position of the motor drive is controlled to a stop position in the direction where said movable vane is closed, and a stop position in the direction where said movable vane is opened, and the motor drive is controlled so that the passage of the intake air pipe becomes the target opening by setting said stop position as an operation reference position of said motor drive, and setting between said stop positions as driving dynamic range of said motor.