Patent ID: 6152108
Filing Date: 2000-11-28
Classification: F02D

Abstract:
A throttle controller comprising:a throttle valve moving between a fully closed position and a fully opened position;a motor for opening and closing the throttle valve;a bias member for urging the throttle valve toward the fully closed position;a position detector for detecting an actual position of the throttle valve;a target position setting means for determining a target position;a difference operating means for calculating a difference between the actual position and the target position;a driving force setting means for determining a driving force of the motor; anda motor driving means for driving the motor with the set driving force, wherein the driving force setting means includes:a PID operating means for calculating proportional, integral and derivative factors based on said difference;a position holding means for calculating a position holding factor based on the target position, said position holding factor corresponding to a driving force for holding the throttle valve at the target position when the throttle valve has substantially stopped at said target position; andan operation means for adding the proportional, integral, derivative and position holding factors.