| 压电驱动式双喷嘴挡板电液伺服阀 |
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| 引用本文： | 程光明,李鹏,杨志刚,鄂世举,刘建芳.压电驱动式双喷嘴挡板电液伺服阀[J].光学精密工程,2005,13(3):276-282. |
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| 作者姓名： | 程光明 李鹏 杨志刚 鄂世举 刘建芳 |
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| 作者单位： | 吉林大学,机械科学与工程学院,吉林,长春,130025 |
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| 基金项目： | 国家863计划资助项目(No.2001AA423270)。 |
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| 摘 要： | 设计了一种利用压电双晶片驱动器代替传统双喷嘴电液伺服阀力矩马达驱动部分的新型电液伺服阀,以期改善现有该型阀的动、静态特性。通过试验得出,设计的压电双晶片驱动器输出位移为82.5 μm,全量程位移波动小于0.7 μm,谐振频率1.2 kHz,完全满足双喷嘴电液伺服阀对驱动器的要求。试验表明:基于此驱动器的电液伺服阀在频率低于100 Hz的范围内具有良好的线性度,克服了传统双喷嘴电液伺服阀在频宽和抗电磁干扰能力等方面的不足。
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| 关 键 词： | 电液伺服阀 压电双晶片 反馈控制 |
| 文章编号： | 1004-924X(2005)03-0276-07 |
| 收稿时间： | 2005-03-22 |
| 修稿时间： | 2005年3月22日 |
Double-nozzle piezoelectric servovalve |
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| CHENG Guang-ming,LI Peng,YANG Zhi-gang,E Shi-ju,LIU Jian-fang.Double-nozzle piezoelectric servovalve[J].Optics and Precision Engineering,2005,13(3):276-282. |
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| Authors: | CHENG Guang-ming LI Peng YANG Zhi-gang E Shi-ju LIU Jian-fang |
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| Affiliation: | College of Mechanical Science and Engineering, Jinlin University, Changchun 130025, China |
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| Abstract: | To improve the static and dynamic characteristics of traditional electrohydraulic servovalves, a new type electrohydraulic servovalve was designed by using piezoelectric actuator based on bimorph instead of the moment motor of conventional servovalves. The results show that the output distance of designed piezoelectric bimorph actuator is 82.5 μm, fluctuation in full scale is less than 0.7μm, and resonance frequency is 1.2 kHz. It can meet the requests of servovalve. And the designed servovalve owns perfect linearity when the frequency is less than 100 Hz. The lacks of traditional electrohydraulic servovalves in bandwidth and anti-electromagnetic ability have been overcome. |
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| Keywords: | electrohydraulic servovalves piezoelectric bimorphs feedback control |
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