SE8101821L - Elektronisk krets for metning av skillnaden i kapacitans mellan tva kondensatorer - Google Patents

Elektronisk krets for metning av skillnaden i kapacitans mellan tva kondensatorer

Info

Publication number
SE8101821L
SE8101821L SE8101821A SE8101821A SE8101821L SE 8101821 L SE8101821 L SE 8101821L SE 8101821 A SE8101821 A SE 8101821A SE 8101821 A SE8101821 A SE 8101821A SE 8101821 L SE8101821 L SE 8101821L
Authority
SE
Sweden
Prior art keywords
pendulum
paddle
capacitor
capacitors
support frame
Prior art date
Application number
SE8101821A
Other languages
English (en)
Other versions
SE442150B (sv
Inventor
F V Holdren
H W Hugli
M E Larson
J M Kubler
M M Vanschoiack
Original Assignee
Sundstrand Data Control
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sundstrand Data Control filed Critical Sundstrand Data Control
Publication of SE8101821L publication Critical patent/SE8101821L/sv
Publication of SE442150B publication Critical patent/SE442150B/sv

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/13—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by measuring the force required to restore a proofmass subjected to inertial forces to a null position
    • G01P15/132—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by measuring the force required to restore a proofmass subjected to inertial forces to a null position with electromagnetic counterbalancing means

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Gyroscopes (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Electric Ovens (AREA)

Claims (1)

PATENTKRAV
1. Elektronisk krets for m6tning an skillnaden i kapacitans mellan tva kondensatorer,ksannetecknad an en drivanordning (204) fbrbunden odd var och en an kondensatorerna (C.,,C2) fbr att pll'agga en tidsvariabel sOnning samtidigt pA varje koniensator, son resulterar i strbmmar genom kondensatorerna; och en detektor (230) fbrbunden road drivanordningen (204) och kondensatorerna (Cry fbr mRtning an kondensatorstromaarna, soar hRrror &An den tidsvariabla spOnningen och alstra en differenssignal i beroende an skillnaden mellan kondensatorstrbmmarna, en strbmfbrsthrkande krets (304, 306, 308, 310) i detektorn fOr alstring on forstErkta strommar proportionella not var och en an kondensatorstrbmmarna och an strOmdifferensmRtningskrets (324) for att i beroende an de fOrstarkta strtimmarna alstra differenssignalen. (21)Ans nr 8101821-0 Rotel 1013 (51)Klass G 01 R 27/26 (74)0mbud Holmqvist L LL
SE8101821A 1976-07-06 1981-03-23 Elektronisk krets for metning av skillnaden i kapacitans mellan tva kondensatorer SE442150B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/702,389 US4206400A (en) 1976-07-06 1976-07-06 Accelerometer

Publications (2)

Publication Number Publication Date
SE8101821L true SE8101821L (sv) 1981-03-23
SE442150B SE442150B (sv) 1985-12-02

Family

ID=24821031

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8101821A SE442150B (sv) 1976-07-06 1981-03-23 Elektronisk krets for metning av skillnaden i kapacitans mellan tva kondensatorer

Country Status (3)

Country Link
US (1) US4206400A (sv)
CA (1) CA1090423A (sv)
SE (1) SE442150B (sv)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634965A (en) * 1984-12-31 1987-01-06 Sundstrand Data Control, Inc. Charge balancing detection circuit
US5122755A (en) * 1990-05-11 1992-06-16 New Sd, Inc. Capacitive position detector
US5069071A (en) * 1990-08-27 1991-12-03 United Technologies Corporation Vibration monitoring in the frequency domain with a capacitive accelerometer
JPH05215764A (ja) * 1992-01-31 1993-08-24 Canon Inc 光学式加速度計及び光学式角加速度計
US6137254A (en) * 1999-06-21 2000-10-24 Lockheed Martin Corporation Active vibra-acoustic damper
AU2002231133A1 (en) * 2000-12-20 2002-07-01 Metrix Instrument Company Impact transmitter for reciprocating machines
US6922063B2 (en) * 2003-07-11 2005-07-26 Zircon Corporation Apparatus and method for capacitive level sensor
US8528405B2 (en) * 2009-12-04 2013-09-10 The Charles Stark Draper Laboratory, Inc. Flexure assemblies and methods for manufacturing and using the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968031A (en) * 1955-02-24 1961-01-10 North American Aviation Inc Electronic micrometer
US3226979A (en) * 1962-04-02 1966-01-04 North American Aviation Inc Capacitive pickoff unbalance detector and encoder circuit
US3278843A (en) * 1962-10-01 1966-10-11 Hughes Aircraft Co Thickness rate monitoring system for depositing dielectric films
US3493855A (en) * 1967-04-27 1970-02-03 Industrial Nucleonics Corp Capacitive moisture gauge with signal level control using a differential capacitor in the input and feedback circuits of an amplifier
US3678374A (en) * 1970-01-06 1972-07-18 Sundstrand Data Control Servoed transducer system with current output circuit
US3641414A (en) * 1970-10-16 1972-02-08 United Control Corp Transducer system with floating input circuit and constant current output electronics
US3795146A (en) * 1972-05-12 1974-03-05 Vapor Corp Reference signal differentiating capacitive fluid level gauge

Also Published As

Publication number Publication date
SE442150B (sv) 1985-12-02
CA1090423A (en) 1980-11-25
US4206400A (en) 1980-06-03

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