Method and system for motor oscillatory state detection

Details Method and system for motor oscillatory state detection Method and system for motor oscillatory state detection

2011-03-08

2011-03-08

Benson, Walter (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

C318S400010, C318S400240, C318S400250, C318S700000

Reexamination Certificate

active

07902777

ABSTRACT:
Method and system for motor oscillatory state detection. According to various embodiments, the present invention presents a method for determining whether a motor is in an oscillatory state. The method includes powering up a motor for a period of time and then monitoring the movement of the motor during a period after the power if turned off. Based on the movement of the motor and/or impeller during a time period after the power is turned off, whether the motor is in an oscillatory state is determined. The method also includes initiating a process for handle error if the motor is in the oscillation state.

REFERENCES:
patent: 5574608 (1996-11-01), Fukuoka
patent: 5901268 (1999-05-01), Ando et al.
patent: 6011368 (2000-01-01), Kalpathi et al.
patent: 7002311 (2006-02-01), Strike et al.
patent: 7042180 (2006-05-01), Terry et al.

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