Patent ID: 9157376
Filing Date: 2015-10-13
Classification: F02C,F05D,G01H

Abstract:
1. A method for detecting an oscillation error, the method comprising: providing a command signal to a positioning device; monitoring a feedback signal responsive to the command signal, the feedback signal including an actual position of the positioning device; determining that the actual position is above a predetermined upper threshold and below a predetermined lower threshold; wherein when the actual position exceeds the predetermined upper threshold and the predetermined lower threshold, a delay timer starts incrementing and increments until a predetermined delay value; incrementing the delay timer based on a duration of an oscillatory event to obtain a delay timer incremented value; determining that the delay timer exceeds the predetermined delay value and that both the predetermined upper threshold and the predetermined lower threshold are exceeded; based at least in part on the determination, declaring the oscillation error; detecting an end of the oscillatory event; and based on the detecting, decrementing the delay timer starting from the delay timer incremented value; wherein when only one of the predetermined upper threshold and the predetermined lower threshold is exceeded and the oscillatory event is lasting for a predetermined amount of time, the oscillatory event is not declared.