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:
Mar. 27, 2007
Filed:
Sep. 01, 2004
Evgeni Ganev, Torrance, CA (US);
Mike S. Koerner, Rancho Palos Verdes, CA (US);
Chung Y. Liu, Cerritos, CA (US);
Evgeni Ganev, Torrance, CA (US);
Mike S. Koerner, Rancho Palos Verdes, CA (US);
Chung Y. Liu, Cerritos, CA (US);
Honeywell International, Inc., Morristown, NJ (US);
Abstract
One embodiment of the invention provides a turbine control system that adjusts the control thresholds of two-position valves, which provide propellant to the turbine, based on turbine load so as to compensate for increased turbine speed overshoot at low load and the increased turbine speed undershoot at high load. These two-position on-off modulated valves are used in a bang-bang (fully open or fully closed) regulation scheme to eliminate or minimize speed droop by using variable speed bounds implemented as a function of load.