| 引用本文: | 王考,陶俊勇,陈循.气动式振动台气锤产生激励信号的机理及其性能研究.[J].国防科技大学学报,2008,30(4):121-124.[点击复制] |
| WANG Kao,TAO Junyong,CHEN Xun.A Study on the Generating Mechanism of Exciting Signals and the Performance of Vibrators Fixed on Repetitive Shock Machines[J].Journal of National University of Defense Technology,2008,30(4):121-124[点击复制] |
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| 气动式振动台气锤产生激励信号的机理及其性能研究 |
| 王考, 陶俊勇, 陈循 |
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(国防科技大学 机电工程与自动化学院，湖南 长沙 410073)
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| 摘要: |
| 建立了阶梯式活塞气锤的力学模型，揭示了该类气锤产生碰撞信号的机理，针对两种不同型号的气锤，结合大量工程实验仿真生成了不同气压作用下两种气锤产生的激励信号，以激励信号的低频能量为气锤的性能指标，进一步评价了两种气锤的性能优劣。研究结果表明：大气锤的性能明显优于小气锤的性能。 |
| 关键词: 阶梯式活塞气锤 碰撞信号 低频能量 性能指标 |
| DOI： |
| 投稿日期：2008-03-10 |
| 基金项目:国家部委基金资助项目 |
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| A Study on the Generating Mechanism of Exciting Signals and the Performance of Vibrators Fixed on Repetitive Shock Machines |
| WANG Kao, TAO Junyong, CHEN Xun |
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(College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073，China)
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| Abstract: |
| In this paper, the mechanical model of the stepped piston vibrator is constructed and the generating mechanism of impact signal produced by the vibrator is studied firstly. Then based on experiments, the exciting signals produced by two common kinds of stepped piston vibrators are emulated under different pressure values. Finally the low frequency energies of exciting signals are taken as the performance indexes of vibrators and two kinds of vibrators are evaluated. The results of this paper show that big vibrators are superior to small ones under different pressure values. |
| Keywords: stepped piston vibrator impact signal low frequency energy performance index |
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