Electronic throttle servo hard stop detection system

摘要

A method for controlling a positioning device (34) of an internal combustion engine includes providing an electric motor (30) for actuating the positioning device (34). The positioning device (34) is commanded to change to a commanded position. A control effort required to change to the commanded position is then detected. Whether the control effort exceeds a threshold for a predetermined time period is determined. The control effort is reduced when the control effort exceeds the threshold for the predetermined time period. Each full stop position is relearned each time a close stop is commanded.