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1. WO1991001009 - MONOLITHIC ACCELEROMETER WITH FLEXURALLY MOUNTED FORCE TRANSDUCERS

Publication Number WO/1991/001009
Publication Date 24.01.1991
International Application No. PCT/US1990/003201
International Filing Date 05.06.1990
IPC
G01P 1/00 2006.01
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
1Details of instruments
G01P 15/08 2006.01
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
02by making use of inertia forces
08with conversion into electric or magnetic values
G01P 15/097 2006.01
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
02by making use of inertia forces
08with conversion into electric or magnetic values
097by vibratory elements
G01P 15/10 2006.01
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
02by making use of inertia forces
08with conversion into electric or magnetic values
097by vibratory elements
10by vibratory strings
CPC
G01P 1/003
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
1Details of instruments
003used for damping
G01P 15/0802
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
02by making use of inertia forces ; using solid seismic masses
08with conversion into electric or magnetic values
0802Details
G01P 15/097
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
02by making use of inertia forces ; using solid seismic masses
08with conversion into electric or magnetic values
097by vibratory elements
G01P 2015/0828
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
02by making use of inertia forces ; using solid seismic masses
08with conversion into electric or magnetic values
0805being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration
0822for defining out-of-plane movement of the mass
0825for one single degree of freedom of movement of the mass
0828the mass being of the paddle type being suspended at one of its longitudinal ends
G06F 11/0757
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
11Error detection; Error correction; Monitoring
07Responding to the occurrence of a fault, e.g. fault tolerance
0703Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
0751Error or fault detection not based on redundancy
0754by exceeding limits
0757by exceeding a time limit, i.e. time-out, e.g. watchdogs
G06F 11/22
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
11Error detection; Error correction; Monitoring
22Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
Applicants
  • SUNDSTRAND DATA CONTROL, INC. [US/US]; 15001 N.E. 36th Street P.O. Box 97001 Redmond, WA 98073-9701, US
Inventors
  • NORLING, Brian, L.; US
  • PETERS, Rex, B.; US
Agents
  • YATSKO, Michael, S.; 4949 Harrison Avenue P.O. Box 7003 Rockford, IL 61125-7003, US
Priority Data
544,22106.07.1989US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MONOLITHIC ACCELEROMETER WITH FLEXURALLY MOUNTED FORCE TRANSDUCERS
(FR) ACCELEROMETRE MONOLITHIQUE AVEC TRANSDUCTEURS DE FORCE A MONTAGE FLEXIBLE
Abstract
(EN)
An accelerometer comprising a monolithic crystalline substrate (12), the substrate comprising a support (30), a proof mass (32), and a force transducer (40). The proof mass is connected to the support by one or more proof mass flexures (34) that permit the proof mass to rotate with respect to the support about a hinge axis (HA). One end of the force transducer is connected to the support, and the other end is connected to the proof mass by a transducer flexure (52). The transducer flexure has a thickness substantially less than the thickness of the transducer, such that when the proof mass rotates, the transducer rotates with respect to the proof mass about a transducer axis (TA) that passes through the transducer flexure. Preferably, the transducer axis is offset from the hinge axis in a manner so as to cancel nonlinearities in the force transducer, and the length of the proof mass along the pendulous axis (PA) is less than half the length of the transducer. Damping plates (20, 22) are positioned above and below the proof mass, and provide shock stops and damping.
(FR)
Un accéléromètre comprend un substrat cristallin monolithique (12), lequel substrat comprend un support (30), une masselotte (32) et un transducteur de force (40). La masselotte est connectée au support par un ou plusieurs éléments flexibles (34) qui permettent à la masselotte de tourner par rapport au support autour d'un axe d'articulation (HA). Une extrémité du transducteur de force est connectée au support et l'autre extrémité est connectée à la masselotte par un élément flexible (52). L'élément flexible du transducteur possède une épaisseur sensiblement plus petite que l'épaisseur du transducteur de sorte que, lorsque la masselotte tourne, le transducteur tourne par rapport à la masselotte autour d'un axe (TA) du transducteur, cet axe passant par l'élément flexible (52) du transducteur. De préférence, l'axe du transducteur est décalé par rapport à l'axe d'articulation de manière à annuler les non-linéarités dans le transducteur de force, et la longueur de la masselotte le long de l'axe pendulaire (PA) est plus petite que la moitié de la longueur du transducteur. Des plaques d'amortissement (20, 22) sont positionnées au-dessus et au-dessous de la masselotte afin d'arrêter et amortir les chocs.
Also published as
Latest bibliographic data on file with the International Bureau