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:
Apr. 14, 1998
Filed:
Nov. 06, 1996
Applicant:
Inventor:
Geoffrey T Brown, Harrogate, GB;
Assignee:
Switched Reluctance Drives Limited, Harrogate, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ; H02P / ;
U.S. Cl.
CPC ...
318701 ; 318603 ; 318254 ;
Abstract
An angle interpolation circuit for a phase energisation controller receives absolute positions from sensors and interpolates conduction angles for each phase in a switched reluctance machine having one or more phases. It uses a frequency multiplier to generate an integer number of pulses between the edges of the sensor signal for clocking a corresponding counter for each machine phase. The circuit adjusts for variations in the mark/space ratio of sensor inputs by setting the counters' expected values at each sensor edge.