The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 14, 1998

Filed:

Jan. 21, 1997
Applicant:
Inventor:

Gerald L Coy, Webster, NY (US);

Assignee:

Xerox Corporation, Stamford, CT (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ; H02P / ;
U.S. Cl.
CPC ...
318560 ; 318561 ; 318 16 ; 318282 ; 101 91 ; 400 74 ; 1564415 ;
Abstract

Diagnosis of servo motor driven drive train problems based upon changes in the rotational velocity of the servo motor as electrically operable drive line components are selectively engaged. The unloaded (unloaded) rotational velocity of a servo motor is determined, a drive train component that couples a load to the servo motor is energized, the change in the rotational velocity of the servo motor caused by engaging the drive train component is determined, and, if the servo motor rotational velocity falls outside of a predetermined limit the drive line fault that causes that rotational velocity to fall outside of that limit is identified. Beneficially, the status of the drive train is sent to a remote location using a data link.


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