| 阶梯圆柱形压电振子直线型超声电机 |
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| 引用本文： | 金家楣,泮振锋,钱富.阶梯圆柱形压电振子直线型超声电机[J].振动．测试与诊断,2011,31(6):715-719. |
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| 作者姓名： | 金家楣 泮振锋 钱富 |
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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 南京,210016 |
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| 基金项目： | 国家自然科学基金资助项目(编号:10874090,91023020); NSFC-广东联合基金重点资助项目(编号:U0934004) |
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| 摘 要： | 针对现有直线型超声电机推力较小、效率不高的普遍现状,提出利用阶梯圆柱形压电振子驱动的直线型超声电机.其压电振子包含两组压电陶瓷单元,经逆压电效应激发阶梯形圆柱压电振子在两个正交方向上分别产生5阶弯曲振动,使振子两个圆盘形结构的表面质点形成椭圆运动,经摩擦作用于固定导轨,使振子组件沿导轨产生直线运动,进而构成直线型超声电机.采用有限元仿真方法确定结构尺寸,制作原理样机并进行了相关试验.原理样机获得如下性能:最大输出力为16.2 N;最大速度为180 mm/s;最大效率为38％;响应时间为24 ms；步进分辨率为2μm.
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| 关 键 词： | 超声电机 压电振子 弯曲振动 阶梯圆柱 输出力 效率 |
Linear Ultrasonic Motor Using Notched Cylindrical Piezoelectric Vibrator |
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| Jin Jiamei,Pan Zhenfeng,Qian Fu.Linear Ultrasonic Motor Using Notched Cylindrical Piezoelectric Vibrator[J].Journal of Vibration,Measurement & Diagnosis,2011,31(6):715-719. |
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| Authors: | Jin Jiamei Pan Zhenfeng Qian Fu |
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| Affiliation: | Jin Jiamei,Pan Zhenfeng,Qian Fu(State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics Nanjing,210016,China) |
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| Abstract: | A linear ultrasonic motor using a notched cylindrical piezoelectric vibrator has been proposed and developed for a large thrust and a high energy efficiency.The vibrator consists of two pairs of piezoelectric ceramic elements,which are excited to generate the fifth-bending modes of the notched cylindrical piezoelectric vibrator in two orthogonal direction.The surface particles on the two disk-shaped parts move along an elliptical trajectory,which in turn acts on a contacted rail plate,and then the frictiona... |
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| Keywords: | ultrasonic motor piezoelectric vibrator bending vibration notched cylinder thrust energy efficiency |
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