METHOD FOR PNEUMATIC FREQUENCY MEASURING BODY ACCELERATION Russian patent published in 2016 - IPC G01P15/00 

FIELD: aircraft engineering.

SUBSTANCE: invention relates to devices used in aircraft navigation, in measuring acceleration. Technical result is achieved by a method of pneumatic frequency measuring a body acceleration, according to which acceleration of inertial mass is converted into an inlet pressure, amplified, herewith analogue negative feedback by acceleration is used, signal of which is summed with the inlet pressure, outlet pressure is converted into a frequency and supplied to a counting device characterized by that via the feedback an output frequency signal is fed, which is converted into a constant-duration and constant-amplitude pulse frequency, the pulse signal is converted into an analogue feedback pressure signal for subsequent summation and the signal is integrated in a straight link before a nonlinear element while rectifying the output characteristic of the system.

EFFECT: technical result is higher accuracy (reduction of error) due to inclusion in the straight link of an integrator linearizing the output characteristic of the measurement system and better efficiency of the measurement by including in the feedback circuit a frequency part of the measurement.

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