Patent ID: 7861588

Claim:
A force rebalance control system using an automatic gain control loop, comprising: a gyroscope to detect a displacement signal of a mass body corresponding to an input angular velocity, and to adjust a displacement of the mass body; a charge amplifier to convert the displacement signal detected by the gyroscope into a voltage signal, and to output the voltage signal; a differentiator to output a velocity signal of the mass body on a basis of the displacement signal, output from the charge amplifier as the voltage signal; a unity gain reference frequency output unit to output a sine wave signal having a phase, frequency, and unity gain identical to a phase and frequency of the velocity signal output from the differentiator; a reference value input unit to generate a reference signal required to induce vibration of a sensing axis having uniform intensity regardless of the input angular velocity; a controller to output a control signal, required for the gyroscope to vibrate with a predetermined amplitude, using the reference signal output from the reference value input unit; and a multiplier to perform a multiplication operation on the sine wave signal, output from the unity gain reference frequency output unit, and the control signal, output from the controller, and to output a resulting voltage signal and apply the resulting voltage signal to the gyroscope.