ACCELEROMETER Russian patent published in 2012 - IPC G01P15/13 

FIELD: instrument making.

SUBSTANCE: accelerometer comprises a central quartz plate, which includes a pendulum 1 on an elastic quartz suspension 2 and a support ring 3 with ledges (mounts) 4, providing a working clearance. On the pendulum 1 at both sides there is a coating of a sprayed current-conducting material 8, which with fixed surfaces of side plates 9 forms the main differential capacitance sensor of pendulum position, operating within accelerometer's feedback. Besides, on the pendulum 1 at both sides there is one more coating sprayed from a current-conducting material 10, which forms with surfaces of side plates 8 an additional differential capacitance position sensor, output of which arrives to an amplifier-discriminator, with the help of which the angle of pendulum rotation is determined around the centre of torque sensor (force sensor) forces application provided there is mismatch between the specified centre and the centre of the pendulum's gravity. After removal of a certain part of the pendulum mass an equivalent compensating moment is formed, which minimises the value of centres mismatch and accordingly pendulum's turn and bending of the elastic suspension.

EFFECT: increased accuracy of accelerometer's zero signal.

2 dwg