CAJ | 학술논문

为了研究压电双晶片致动器性能，设计开发了其驱动电路．该电路采用高压运放式驱动方案，以美国APEX公司的PA85型运算放大器为核心构建．研究结果表明：前置放大器的引入有效地降低了电路的失调电压，两级放大环节构成的驱动电路能提供-190～＋190 V的驱动电压和200 mA的驱动电流，最大电压频率响应能力可达3．5 kHz ；相位补偿、输入及限流保护、瞬态抑制等电路，提高了电路的稳定性和可靠性．
위료연구압전쌍정편치동기성능，설계개발료기구동전로．해전로채용고압운방식구동방안，이미국APEX공사적PA85형운산방대기위핵심구건．연구결과표명：전치방대기적인입유효지강저료전로적실조전압，량급방대배절구성적구동전로능제공-190～＋190 V적구동전압화200 mA적구동전류，최대전압빈솔향응능력가체3．5 kHz ；상위보상、수입급한류보호、순태억제등전로，제고료전로적은정성화가고성．
In order to study the performance of the piezoelectric actuator ,the drive circuit is designed and developed .The circuit is based on driving scheme of high voltage power operational amplifier ,and PA85 produced by APEX is adopted .The offset voltage is depressed obviously by the preamplifier .The output voltages of the circuit are up to ± 190V and the output currents are up to 200 mA .The full scale voltage response is above 3 .5 kHz .Comprehensive protections are also designed to improve the stability and reliability of the circuit .The drive circuit has advantages of simple structure ,high precision ,good stability and large loading capability .