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高频电液激振器的实验研究
引用本文:倪兴龙,俞浙青,贾文昂,靳德峰,付亮,黄钰曌. 高频电液激振器的实验研究[J]. 流体传动与控制, 2012, 0(5): 17-20
作者姓名:倪兴龙  俞浙青  贾文昂  靳德峰  付亮  黄钰曌
作者单位:浙江工业大学特种装备制造与先进加工技术教育部/浙江省重点实验室浙江杭州310014
基金项目:国家自然科学基金资助项目(51105337); 浙江工业大学校级自然科学研究基金资助项目(2011XY005)
摘    要:电液激振器作为疲劳试验机的关键部件,其发展趋势是保证输出大激振力的同时,向着2000Hz以上工作频率段的方向发展,以适应新产品开发过程中的振动环境试验的需求,为此对高频电液激振器的研究显得尤为重要。高频电液激振器系统是由2D阀驱动液压缸活塞以某一振动中心位置作周期性往复运动。根据流体力学和系统动力学的理论对该系统进行数学建模。通过实验研究与分析发现,在2000Hz至3000Hz高频电液激振器所采集的激振波形比较光滑,且波形失真度不大,趋近于正弦波。同时,实现了激振频率3000Hz的重大突破。

关 键 词:电液激振器  高频  振动波形  失真度

Experimental Research of High-frequency Electro-hydraulic Vibration Exciter
Ni Xinglong Yu Zheqing Jia Wenang Jin Defeng Fu Liang Huang Yu. Experimental Research of High-frequency Electro-hydraulic Vibration Exciter[J]. Fluid Power Transmission & Control, 2012, 0(5): 17-20
Authors:Ni Xinglong Yu Zheqing Jia Wenang Jin Defeng Fu Liang Huang Yu
Affiliation:Ni Xinglong Yu Zheqing Jia Wenang Jin Defeng Fu Liang Huang Yuzhao
Abstract:The electro-hydraulic Vibration Exciter is a key component of the fatigue testing machine, then its' devel- opment trend is to guarantee the output of large exciting force, at the same time, to gain the operating frequency above 2 000 Hz, and to adapt to the needs of the vibration test in the new product development process. So it is par- ticularly important to study high-frequency electro-hydraulic Vibration Exciter. The system of High-frequency elec- tro-hydraulic Vibration Exciter is that hydraulic cylinder piston driven by the 2D valve to a central location for peri- odic vibration of reciprocating motion. According to the theory of fluid mechanics and system dynamics, the mathe- matical model of this system is established. Through experimental research and analysis, the excited waveform col- lected by High-frequency Electro-hydraulic Vibration Exciter from 2 000 Hz to 3 000 Hz is relatively smooth, and its distortion is not obvious, even close to sine wave. Simultaneously, achieving a major breakthrough, the excited frequency is higher than 3 000 Hz.
Keywords:electro-hydraulic vibration exciter  high-frequency  excited waveform  distortion
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