ACTUATION VALIDATION ALGORITHM

An adaptive actuation verification method monitors the difference between a desired position and an actual position of a movable device, to ensure that the actual position of the device is approaching the desired position in an acceptable manner. A range of acceptable approaches is calculated based on the response capability of the movable device. The range is updated on-line to account for any changes in the response capability. An actuation fault is assumed when the device does not approach the desired position within the calculated range.