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:
Aug. 22, 2017
Filed:
Jul. 22, 2014
Applicant:
Hamilton Sundstrand Space Systems International, Inc., Windsor Locks, CT (US);
Inventors:
Robert P. Wichowski, Westfield, CT (US);
Kevin G. Hawes, Windsor Locks, CT (US);
Assignee:
Hamilton Sundstrand Space Systems International, Inc., Charlotte, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B 5/01 (2006.01); H02P 6/16 (2016.01); G01D 5/14 (2006.01); G01R 23/02 (2006.01); H02P 6/17 (2016.01);
U.S. Cl.
CPC ...
H02P 6/165 (2013.01); G01D 5/145 (2013.01); G01R 23/02 (2013.01); H02P 6/17 (2016.02);
Abstract
A counter is started on the falling edge of a tach pulse. This counter counts to the rising edge of a second tach pulse, such as the next tach pulse. During the duration of the tach pulse the FPGA calculates the RPM of a motor. In this way, during each commutation period, a RPM is calculated. The present system performs a RPM calculation during each commutation period and/or tach pulse duration.