Linear accelerometer with improved magnetic rebalance system

Details Linear accelerometer with improved magnetic rebalance system Linear accelerometer with improved magnetic rebalance system

1977-09-21

1979-03-27

Gill, James J.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

G01P 1508

Patent

active

041459296

ABSTRACT:
Linear acceleration responsive apparatus is disclosed wherein a sensing mass or bobbin is suspended so that a pair of series connected, oppositely wound circumferential coils thereon are positioned in oppositely directed radial magnetic fields produced by permanent magnet means. The bobbin is supported by hinge assemblies which also serve as flex leads and variable capacitance position pickoff means. A rebalance current is supplied to the coils by a servo amplifier in response to the pickoff signal. The magnetic flux components resulting from the rebalance current are equal and oppositely directed, thereby precluding any effect on the radial magnetic fields.

REFERENCES:
patent: 2591921 (1952-04-01), Cosgriff et al.
patent: 3120130 (1964-02-01), Cohen
patent: 3536315 (1970-10-01), Jenkin

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