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.
Patent No.:
Date of Patent:
Dec. 19, 1989
Filed:
Aug. 24, 1988
Theodore D Fluegel, Waltham, MA (US);
Sundstrand Corporation, Rockford, IL (US);
Abstract
A speed trimming integrated drive generator 18 includes a differential 24 having inputs coupled to a prime mover 20 and to a wild frequency generator 48, the output thereof being coupled to a main generator 14. In order to control main generator speed, and thus the frequency of the power generated by the main generator 14, resistive load management for the wild frequency generator 48 is utilized. Particularly, a generator control unit 58, responsive to the main generator frequency, selectively couples resistive loads 56 to an output 52 of the wild frequency generator 48 to provide trimming power. Fine tuning of the trimming power is provided by controlling the output voltage from the wild frequency generator 48 responsive to sensed frequency.