| 摘要 |
PURPOSE:To absorb the durable deterioration by driving a motor for a motor driving time after correction and carry out the increase/decrease control with the superior responsiveness by calculating the motor driving time after correction which is obtained by correcting the initial motor driving time, by using the motor deterioration correction coefficient as the ratio between the initial value and the actual value of the motor driving time. CONSTITUTION:A motor controller is constituted as an idle speed controller (ISC device) installed in the intake passage of an engine E. In an ISC valve 18, a dc motor 49 is connected with an electronic controller 35 through a driving circuit 351. In this case, the electronic controller 35 calculates the motor deterioration correction coefficient from the ratio between the driving time per revolution angle of the motor 49 which is initiallized and the actual driving time per revolution angle. Further, the motor driving time corresponding to the difference between the designated aimed control quantity and the actual control quantity is calculated. Further, the motor driving time after correction in which the motor driving time is corrected by the motor deterioration correction coefficient is calculated. Then, the motor 49 is driven for the motor driving time after correction. |
