ACCELEROMETER Russian patent published in 2014 - IPC G01P15/13 

FIELD: measurement equipment.

SUBSTANCE: accelerometer comprises a sensitive element, divergence of which is fixed with an angle sensor, outputs of which are connected with inputs of a summator via a threshold element and an integrating amplifier, and a moment sensor included into negative feedback. The output of the summator is the analogue output of the device. To increase accuracy and to expand pass band, two negative feedbacks are introduced into the accelerometer: one - from the output of the moment sensor to one of inputs of the moment sensor via a differentiating filter, the other - negative integrating feedback, is implemented from the output of the summator to the other input of the moment sensor in series along information inputs via a comparator, a lever converter, a pair of triggered synchronous generators, a reversible binary counter, a comparison circuit, a trigger, an electronic key. Additional inputs of the comparator, the reversible binary counter, triggered synchronous generators are connected to a generator of auxiliary frequency. Besides, the input of the electronic key is connected with the output of the current generator. The input of the comparison circuit is connected with the output of the generator of auxiliary frequency via the summing binary counter. The output of the reversible binary counter is a digital output of the device. The negative feedback implemented from the outlet of the angle sensor to the inlet of the moment sensor, via a differentiating filter, performs stabilisation of accelerometer parameters.

EFFECT: introduction of integrating feedback into an accelerometer makes it possible to create a device with absence of offset by divergence, operating in self-oscillation mode, with expanded pass band and considerable efficiency.

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