| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve convergence of the position of a throttle valve (hereinafter referred to as a throttle) without performing complicated processing. <P>SOLUTION: In a device for controlling the throttle by a DC motor, impressed voltage V to be supplied to the motor is determined by processing for every fixed time Ts. In the processing, non-load speed No of the motor corresponding to voltage (V-Vs) deducted with spring force compensation voltage Vs (voltage to make the motor output the same force as that of a return spring of the throttle) from the determined impressed voltage V is calculated (S120). A prediction position Pe of the throttle is calculated from the No (S130). Fixed speed of the motor to operate the throttle by a difference between a target position Pt and the prediction position Pe for the fixed time Ts is calculated as requested speed Nr (S150). Smaller voltage of voltage Vr that the Vs is added to the impressed voltage (=Ke*Nr) of the motor corresponding to the non-load speed of the same value as the Nr and battery voltage Vb is made as the impressed voltage V (S160, S170). <P>COPYRIGHT: (C)2012,JPO&INPIT |
