基于虚拟技术的液压综合实验台的研究与应用

发布时间：2018-06-07 05:22

本文选题：液压实验台 + 电液比例方向阀　；参考：《山东大学》2012年硕士论文

【摘要】：自法国物理学家帕斯卡提出静压传递原理以来,液压技术已有三百年的发展历史。近年来,随着制造业的发展,液压技术也有了很大的提高,液压新技术、新元件不断涌现。作为机械专业的一门基础课程,液压技术的教学需要理论和实践相结合,液压实验台是液压技术课程进行实验和实习的主要设备。为了适应现代化教学的要求,为社会培养优秀的技术人才,本文将虚拟仪器技术引入到液压实验台的测控技术中,阐述了液压技术的发展和液压实验台的研究现状以及液压实验台的发展趋势,并对所用软件进行了分析,根据液压实验台的工作条件和用途,设计了液压测试系统的总体方案,并利用虚拟技术完成对电液比例阀和电液伺服阀的性能测试,并对该实验台的软件控制程序的操作进行了详细说明。实验台主要由基本的液压元件(如液压泵、液压缸、控制阀等)、电液比例方向阀性能实验系统、电液比例溢流阀性能实验系统、电液比例调速阀性能实验系统、电液伺服阀性能实验系统以及相关的压力传感器和流量传感器等组成。电液比例阀静态特性测试包括比例方向阀、比例流量阀和比例流量阀的稳态控制特性和稳态负载特性测试；比例阀的动态特性主要完成频率特性和阶跃响应特性的测试。电液伺服阀的性能实验包括空载和负载流量特性测试、压力特性测试和频响特性测试。电液比例阀和电液伺服阀是电液控制系统中重要的元件,其静态特性和动态特性测试在电液控制系统的理论与实验研究中具有重要的意义。在虚拟仪器测控技术的基础上,计算机辅助测试系统,能精确高效地完成电液比例阀和电液伺服阀的特性测试工作,测试过程和数据处理完全由计算机实现,测试项目齐全、结果准确,实际测试结果验证了该测试系统的合理性和可靠性。
[Abstract]:Since French physicist Pascal put forward the principle of hydrostatic transfer, hydraulic technology has been developed for 300 years. In recent years, with the development of manufacturing industry, hydraulic technology has been greatly improved. As a basic course of mechanical specialty, the teaching of hydraulic technology needs the combination of theory and practice. The hydraulic experimental bench is the main equipment for the experiment and practice of hydraulic technology course. In order to meet the requirements of modern teaching and train outstanding technical talents for the society, this paper introduces virtual instrument technology into the measurement and control technology of hydraulic test bench. This paper expounds the development of hydraulic technology, the research status of hydraulic test bench and the development trend of hydraulic test bench, and analyzes the software used. According to the working conditions and usage of hydraulic test bench, the overall scheme of hydraulic test system is designed. The performance of electro-hydraulic proportional valve and electro-hydraulic servo valve is tested by virtual technology, and the operation of the software control program of the test bench is described in detail. The test bench mainly consists of basic hydraulic components (such as hydraulic pump, hydraulic cylinder, control valve, etc.), electro-hydraulic proportional directional valve performance experimental system, electro-hydraulic proportional relief valve performance experimental system, electro-hydraulic proportional speed regulating valve performance experimental system, The electro-hydraulic servo valve performance test system and related pressure sensors and flow sensors and other components. The static characteristic test of electro-hydraulic proportional valve includes steady state control characteristic and steady load characteristic of proportional flow valve, proportional flow valve and proportional flow valve, and the dynamic characteristic of proportional valve mainly completes the testing of frequency characteristic and step response characteristic. The performance test of electro-hydraulic servo valve includes no-load and load flow characteristic test, pressure characteristic test and frequency response characteristic test. Electro-hydraulic proportional valve and electro-hydraulic servo valve are important components in electro-hydraulic control system. The measurement of their static and dynamic characteristics is of great significance in the theoretical and experimental study of electro-hydraulic control system. Based on the virtual instrument measurement and control technology, the computer-aided testing system can accurately and efficiently test the characteristics of electro-hydraulic proportional valve and electro-hydraulic servo valve. The testing process and data processing are completely realized by computer, and the test items are complete. The results show that the system is reasonable and reliable.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH137

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