Gimbal angle rate feedback by cage coil demodulation

Details Gimbal angle rate feedback by cage coil demodulation Gimbal angle rate feedback by cage coil demodulation

1978-07-28

1980-02-12

Truhe, J. V.

Electricity: motive power systems

Positional servo systems

With stabilizing features

318648, 318649, 244 79, 244165, G05B 501

Patent

active

041885708

ABSTRACT:
A circuit for applying rate feedback to the pitch and yaw canard commands a guided projectile or missile to stabilize the airframe. The circuit demodulates and differentiates the signal from the gyro cage coil to obtain a signal representative of the airframe movement at its natural frequency. Phase detectors provide a phase reference by comparing the cage signal carrier with the output of hall effect elements in the speed sensing circuitry. The rate amplitude from the differentiator is then multiplied by the phase references to resolve the rate into pitch and yaw command components. Summation circuits then scale and subtract the rate commands from the guidance commands to provide negative rate feedback.

REFERENCES:
patent: 3848172 (1974-11-01), Thomas
patent: 3984748 (1976-10-01), Sullivan
patent: 4125799 (1978-11-01), Harduvel

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