现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2013年
16期
98-100,104
,共4页
陀螺%自激%恒幅振动%PWM
陀螺%自激%恆幅振動%PWM
타라%자격%항폭진동%PWM
gyroscope%self-oscillation%constant amplitude vibration%pulse width modulation
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%。
針對微機械振動陀螺驅動控製電路中的幅頻控製要求,提齣瞭在高品質因數下,基于PWM技術的陀螺自激驅動控製方案,併建立瞭繫統行為分析模型。鑒于繫統的高階非線性,採用平均週期法分析瞭繫統的行為,根據理論分析設計瞭閉環驅動電路。理論分析和實驗錶明:閉環繫統是穩定的,改變佔空比可以調節振動幅度;在上電隨機譟聲下,自激振動幅度在1 h內嚮上漂移約為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.