Electrostatic accelerometer

Details Electrostatic accelerometer Electrostatic accelerometer

1981-11-27

1983-07-19

Gill, James J.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

308 10, 318662, G01P 15125, G01P 1513

Patent

active

043937101

ABSTRACT:
Electrostatic accelerometer comprising an electrically conducting test weight freely floating in a cage and a system of electrodes located in said cage at the points where the axes of a coordinate tri-rectangular trihedral meet the cage. The electrodes are associated by pairs located along a given coordinate axis and form with the test weight pairs of variable capacitors. Two capacitor bridges including the variable capacitors give the sum and difference of the capacities of these variable capacitors and adder subtractor means gives the individual values of these capacities. The accelerometer further comprises means for calculating the gradients of the measured capacities of a pair of electrodes, means for squaring the positioning control signals relating to said pair of electrodes, and means for multiplying said gradient by said squared signals.

REFERENCES:
patent: 3438267 (1969-04-01), Contensou et al.
patent: 3742767 (1973-07-01), Bernard et al.

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