The invention discloses a full-angle mode circuit
gain error self-compensation
system of a micro-electro-
mechanical system gyroscope. The full-angle mode circuit
gain error self-compensation
system comprises a
gyroscope pre-amplification circuit, an ADC module, a
gain compensation module, a
demodulation module, a parameter calculation module, a PI controller module, a coordinate conversion module,a compensation coefficient calculation module, a modulation module and a DAC module. The pre-amplification circuit module is connected to a detection
electrode of the micro-electro-mechanical multi-ring
gyroscope, the ADC module is connected to the pre-amplification circuit, the gain compensation module is connected to the ADC module, the
demodulation module is connected to the gain compensationmodule, the PI controller module is connected to the parameter calculation module, the compensation coefficient calculation module is connected to the PI controller module, the coordinate conversion module is connected to the PI controller module, the modulation module is connected to the coordinate conversion module, the DAC module is connected to the modulation module, and the
digital control oscillator module is connected to a PI controller. According to the
system, real-time circuit gain error self-compensation in a full-angle mode of the micro-electro-mechanical gyroscope can be realized.