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특허 상세정보

Motor speed detector

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G01P-003/56   
미국특허분류(USC) 324/161 ; 324/166 ; 361/240
출원번호 US-0614082 (1984-05-25)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 12  인용 특허 : 2
초록

A motor speed detector employs a magnetic sensor for detecting rotational movement of rotor armature segments of the motor and for producing real tachometer pulses in response to such movement. False tachometer pulses produced by extraneous non-rotor motor components are discriminated against to produce a signal representative of actual motor rotational speed.

대표
청구항

A method for detecting rotational speed of a motor, comprising the step of: (a) producing a first signal comprising real tachometer pulses responsive to revolution of rotor armature segments of said motor and false tachometer pulses responsive to extraneous non-rotor components of said motor, both said real and false tachometer pulses increasing in amplitude with increasing rotational speed of said motor, (b) producing a second signal with amplitude representative of the maximum amplitude of said real tachometer pulses, (c) producing a third signal with ...

이 특허를 인용한 특허 피인용횟수: 12

  1. Dennis Charles L. (Richardson TX) Lenhardt Will K. (Richardson TX). Borehole acoustic logging system having synchronization. USP1990114969128.
  2. Doemen Benno (St. Georgen DEX). Circuit arrangement for generating a measurement signal associated with the frequency of an alternating current signal. USP1990054928045.
  3. Taruya Masaaki (Himeji JPX) Ookawa Kiyoshi (Himeji JPX). Ignition monitoring circuit for an ignition system of an internal combustion engine including an erroneous pulse elimina. USP1990014893085.
  4. Seidenfuss, Thomas. Input circuit for inductive engine speed sensor. USP2004086777925.
  5. Walter William L. ; Brokaw A. Paul. Magnetic field change detection circuitry having threshold establishing circuitry. USP2000056064199.
  6. Braschel Volker (Neuwied DEX) Seitz Dieter (Neuwied DEX). Method for measuring the rotational speed of a wheel in an antilocking-protected vehicle brake system including comparin. USP1991085043658.
  7. Bruninger Jrgen (Stuttgart DEX) Holmes James (Stuttgart DEX) Sieber Albrecht (Ludwigsburg DEX). Method for monitoring a tachometer signal. USP1989024808920.
  8. Ridoux Frank E. (Kokomo IN) Neuhalfen Michael A. (Galveston IN). Noise immune crankshaft pulse position developing apparatus. USP1989064843580.
  9. Mialtu, Razvan-Catalin; Stoica, Dan-Ioan-Dumitru; Untersteiner, Heinz; Juglan, Catalina-Petruta. Output switching systems and methods for magnetic field sensors. USP2017059638548.
  10. Kobayashi Sumio (Funabashi JPX) Tokashiki Mutsuo (Narashino JPX) Tomita Hiroyuki (Funabashi JPX) Okawa Tadashi (Funabashi JPX) Sugai Hiroshi (Sakura JPX). Rotating speed measuring apparatus having a corrector for low and high speeds using angle and frequency transducers. USP1989024808933.
  11. Werth, Tobias; Motz, Mario. Switching apparatus, switching system and switching method. USP20181010102992.
  12. Edwards Karl (Birmingham GB2). Variable reluctance transducer processing circuit for providing an output unaffected by low frequency components. USP1991045012207.