COMPENSATING ACCELEROMETER Russian patent published in 2008 - IPC G01P15/13 

FIELD: measuring techniques.

SUBSTANCE: proposed compensating accelerometer comprises an inertial element (1), oscillating system (2), displacement transducer (3), compensating circuit amplifier (4), inverter (5), joint for connecting scaling resistor (6), and a temperature-compensated amplifier (7). The terminal amplifier of the direct conversion circuit (4) comprises an operational amplifier DA1, the inverting input of which is connected to electrical connection of resistors R1 and R2, while its output is connected to inverter (5). Inverter (5) comprises a coil with electrical resistance r and parasitic inductance L and parasitic capacitance C1 and a joint for connecting scaling resistor (6), comprising resistor R_M, connection cables rj and a balancing capacitor C_ad connected in parallel to it. The connection joints (5) and (6) are connected to the temperature compensated amplifier (7), comprising operational amplifier DA2, its negative feedback circuit which is in form of resistor R3 and a circuit comprising a series connected regulating resistor R_s and a temperature sensor coil R₀(T) and shunting resistor R_Sh, connected in parallel.

EFFECT: higher time stability.

4 dwg