Method and apparatus for diagnosing motor damping network...

Details Method and apparatus for diagnosing motor damping network... Method and apparatus for diagnosing motor damping network...

2007-07-17

2007-07-17

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

C324S701000, C324S652000

Reexamination Certificate

active

11137955

ABSTRACT:
An apparatus for diagnosing motor damping network integrity, the motor damping network configured for selective short-circuiting of the windings of a motor in a motor control system. The apparatus includes a motor controller with a motor drive portion thereof electrically isolated from the windings of the motor. A resonant network is based on the windings of the motor, the damping network, and a remaining non-isolated portion of the controller. An amplifier circuit applies an excitation signal to the resonant network. A detector circuit detects a response of the resonant network based on the excitation signal. A state of the damping network is determined based on the response.

REFERENCES:
patent: 3808481 (1974-04-01), Rippel
patent: 6035265 (2000-03-01), Dister et al.
patent: 6194849 (2001-02-01), Wilson-Jones et al.
patent: 6784687 (2004-08-01), Tamura
patent: 2005/0275368 (2005-12-01), Sippola et al.

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