【作者】 韩意斌；

【导师】 俞浙青；

【作者基本信息】 浙江工业大学 ， 机械电子工程， 2007， 硕士

【摘要】 振动试验作为现代工程技术领域中的一项基本试验，广泛应用于许多重要的工程领域，如火箭、卫星的环境试验；工程材料高频疲劳试验；汽车、行走机械的道路模拟试验等。液压振动台由于其输出力大的特点正被广泛应用于实际工业中，但是它的激振频率范围受限制于伺服阀的频宽。针对目前国内高频电液振动台的研究难题，本文设计出了新型的高频电液激振器。该电液激振器采用2D阀控制液压缸实现高频振动方案，通过控制阀芯的转速与阀芯的轴向位移就能分别控制激振器的激振频率和幅值。文章详细阐述了电液激振器的工作原理给出了切实可行的系统总体设计方案；建立了电液激振器的数学模型并对其进行MATLAB仿真；最后着重研究了电液激振器的频率控制，设计出了基于动态C语言的频率控制软件。本文的各个章节的内容简述如下：第一章，首先对与本论文研究主题有关的文献进行了综述，接着阐述了论文的研究意思和目的，最后列出了本课题的主要任务。第二章，本章首先介绍了新型高频电液激振器结构和工作原理，然后根据实际给定的参数对电液激振器主要参数进行了设计和计算，最后介绍了电液激振系统硬件的选取和测控软件的总体设计。第三章，建立了电液激振器的数学模型并对其进行仿真和分析，为电液激振器的进一步优化设计和实验研究提供了理论依据。第四章，本章首先介绍了步进电机及其控制方法，重点介绍了步进电机的加减速控制，设计了电液激振器频率控制软件和简单的上位机控制软件，并进行了相关实验。第五章，本章对论文的研究内容进行了总结与展望。更多还原

【Abstract】 Vibration test, being a fundamental means of the experimental science, has widely been applied in many fields of modem industry, such as the vibration test for the rockets and satellites, test of fatigue strength of the engineering materials under high-frequency circulated force and vibration test to the roughness of the road for the vehicles and mobile machinery. Electro-hydraulic vibration table is characterized by the larger output force, but its frequency bandwidth highly depends on the responding speed of the servo valve, which can not be enhanced to a very high level. A design of electro-hydraulic vibration exciter is proposed, which is intended to promote the vibration frequency in a large scale. In the Electro-hydraulic vibration exciter, the amplitude and the frequency are separately controlled by the linear motion and rotary motion respectively. The working principle of new Electro-hydraulic vibration exciter is first introduced. The design scheme of whole system is then presented, and the mathematical model of the vibration exciter is also established in order to simulate it by utilizing the simulation software MATLAB. Frequency Control of the Electro-hydraulic vibration exciter was specially researched in the last part of the thesis, and the control software is designed by using the Dynamic C explore system. The main tasks of this thesis are as follows.In chapter one, a summary of some relevant information about the history and trend of this research is made. The meaning, purpose and the main tasks of this thesis are given.In chapter two, the structure and working principle of this new Electro-hydraulic vibration exciter iS introduced, the design and calculation about the exciter on the basis of practical Parameter is made, hardware and software design of the Electro-hydraulic vibration system are introduced at last.In chapter three, the simulation and analysis by establishing mathematical model of the vibration exciter is made, whish provides the theory basis for the further design and experiment.In chapter four, the stepping motor .and its control method are introduced. The segment speed control scheme of stepping motor is mainly expounded. The software design about frequency control of the Electro-hydraulic vibration exciter is made. And the experiment about frequency control of the vibration exciter is briefly described in the last part of this Chapter.In chapter five, a summary and a prospect of this thesis are put forward as the conclusion.更多还原