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기술보고서

기술보고서 게시판 내용
타이틀	Reducing Conservatism in Aircraft Engine Response Using Conditionally Active Min-Max Limit Regulators
저자	May, Ryan D.;; Garg, Sanjay
Keyword	AIRCRAFT CONTROL;; COMMERCIAL AIRCRAFT;; CONTROL SYSTEMS DESIGN;; ENGINE CONTROL;; REGULATORS;; SAFETY;; SEQUENTIAL CONTROL;; SIMULATION;; THRUST;; TRANSIENT RESPONSE
URL	http://hdl.handle.net/2060/20130001593
보고서번호	NASA/TM-2012-217814
발행년도	2012
출처	NTRS (NASA Technical Report Server)
ABSTRACT	Current aircraft engine control logic uses a Min-Max control selection structure to prevent the engine from exceeding any safety or operational limits during transients due to throttle commands. This structure is inherently conservative and produces transient responses that are slower than necessary. In order to utilize the existing safety margins more effectively, a modification to this architecture is proposed, referred to as a Conditionally Active (CA) limit regulator. This concept uses the existing Min-Max architecture with the modification that limit regulators are active only when the operating point is close to a particular limit. This paper explores the use of CA limit regulators using a publicly available commercial aircraft engine simulation. The improvement in thrust response while maintaining all necessary safety limits is demonstrated in a number of cases.