Electrostatic accelerometer
US4393710A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1981 |
| Grant date | Jul 19, 1983 |
| Priority date | — |
| Expiry date | Nov 27, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P15/131
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.