| 基于三角位移放大机构的压电制动器研究 |
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| 引用本文： | 姚俊飞,陈超,陈海鹏.基于三角位移放大机构的压电制动器研究[J].压电与声光,2017,39(6):813-816. |
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| 作者姓名： | 姚俊飞 陈超 陈海鹏 |
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| 作者单位： | 南京航空航天大学 机械结构力学及控制国家重点实验室，江苏 南京 210016 |
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| 基金项目： | 国家自然科学基金资助项目（51575259）；机械结构力学及控制国家重点实验室(南京航空航天大学)自主研究课题资助项目(0315K01)；江苏省研究生培养创新工程资助项目（KYLX_0236） |
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| 摘 要： | 提出了一种应用于压电制动器的微位移放大机构,该机构以叠层压电陶瓷为驱动元件,通过基于三角形放大原理的柔性铰链放大机构,放大叠层压电陶瓷的输出位移。分析了放大机构的运动及放大机理,建立了制动系统的力学模型,并利用ANSYS软件建立机构有限元模型进行仿真,在试制样机上对其输出特性进行了实验。实验测试结果表明,该机构对叠层压电陶瓷输出位移的放大倍数为3.2倍,与有限元仿真得到的放大倍数4倍相近,一阶固有频率为1 814Hz,最大输出力为44.1N(150V电压下),且该机构线性良好、分辨率高、迟滞效应较小。
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| 关 键 词： | 压电制动器 微位移放大机构 三角形放大 迟滞效应 力学模型 |
Research on the Piezoelectric Brake Based on the Triangle Displacement Amplification Mechanism |
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| YAO Junfei,CHEN Chao,CHEN Haipeng.Research on the Piezoelectric Brake Based on the Triangle Displacement Amplification Mechanism[J].Piezoelectrics & Acoustooptics,2017,39(6):813-816. |
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| Authors: | YAO Junfei CHEN Chao CHEN Haipeng |
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| Abstract: | A micro displacement magnifying mechanism for the piezoelectric brake is presentedin this paper. Taking the laminated piezoelectric ceramic as drivers of amplifier,the displacement of piezoelectric multilayer actuator is amplified with the flexure hinge amplifier based on the principles of triangle amplification.The motion and amplification mechanism of the amplifying mechanism are analyzed, and the mechanical model of the braking system is established.The finite element model of the mechanism is simulated by ANSYS software, and the output characteristic is tested on the prototype.The experimental results show thatthe mechanism can amplify the output displacement of the laminated piezoelectric ceramic to 3.2 times, which is close to 4 timesby the finite element simulation. The first order natural frequency is 1 814 Hz, the maximum output force is 44.1 N(under 150 V voltage), and the mechanismhas good linearity, high resolution,small hysteresis effect. |
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