CAJ | 학술논문

　　针对微机械振动陀螺驱动控制电路中的幅频控制要求，提出了在高品质因数下，基于PWM技术的陀螺自激驱动控制方案，并建立了系统行为分析模型。鉴于系统的高阶非线性，采用平均周期法分析了系统的行为，根据理论分析设计了闭环驱动电路。理论分析和实验表明：闭环系统是稳定的，改变占空比可以调节振动幅度；在上电随机噪声下，自激振动幅度在1 h内向上漂移约为0.02%。
　　침대미궤계진동타라구동공제전로중적폭빈공제요구，제출료재고품질인수하，기우PWM기술적타라자격구동공제방안，병건립료계통행위분석모형。감우계통적고계비선성，채용평균주기법분석료계통적행위，근거이론분석설계료폐배구동전로。이론분석화실험표명：폐배계통시은정적，개변점공비가이조절진동폭도；재상전수궤조성하，자격진동폭도재1 h내향상표이약위0.02%。
In order to meet the requirement of amplotude frequency control in the driving control circuit of MEMS gyro-scope,a gyroscope self-oscillation driving control scheme based on PWM technology is proposed under the condition of high quality factor. An analysis model of the system behavior was built. Because of the high-order nonlinear for the whole system,the averaging method is adopted to analyze the system behavior. The closed-loop driving circuit was designed according to theoretical analysis. The theoretical analysis and experiment show the closed-loop system is stable and the vibration amplitude can be con-trolled by changing the duty ratio;in the power-on random noise,the maxim drift error of the self-oscillation vibration amplitude is about 0.02% in 1 h.