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특허 상세정보

Fuzzy logic method and apparatus for changing the position of turbine blades via an induction motor, brake and a positio

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G06F-015/18    G06F-009/44    G05B-013/02   
미국특허분류(USC) 395/51 ; 395/3 ; 395/61
출원번호 US-0172396 (1993-12-23)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 16  인용 특허 : 0

Three separate fuzzy rule sets are applied to three corresponding fuzzy sets developed from various input parameters for providing a pitch engagement/mode selection management system and method for requesting disablement of a blade lock, for disabling such lock when the torque available matches the torque required, and for selecting a motor or brake for creating a differential speed between a rotating pitch change mechanism and a fan shaft of a turbine engine. A fuzzeresis rule set is disclosed for stabilizing the motor/brake mode selection fuzzy logic o...


Apparatus for disabling a blade position lock for permitting a change in position of the blade, comprising: a first fuzzifier (10a) for fuzzifying a first plurality of engine command and condition signals (16, 18, 20, 22, 24) for outputting a corresponding first plurality of engine command and condition fuzzy set signals (16a, 18a, 20a, 22a, 24a); means (10b) for applying a first plurality of fuzzy rules to the first plurality of command and condition fuzzy set signals, for outputting a position lock disable request fuzzy set signal (26); a first defuzzi...

이 특허를 인용한 특허 피인용횟수: 16

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  12. McCann Roy A.. Predictive conductive angle motor control system for brake-by-wire application. USP2000066075332.
  13. Driscoll, James T.; Hull, Jason; Mattice, Jeffrey S.. Rotor torque predictor. USP2005046879885.
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  15. Lu, Manxue; Hamel, Jeffrey Anthony. Thrust scheduling method for variable pitch fan engines and turbo-shaft, turbo-propeller engines. USP2017099771878.
  16. Anderson, Carney R.; Tomeo, Peter V.. Torsional flexing energy absorbing blade lock. USP2013068459954.