深海环境下电液比例变量泵流量特性研究

发布时间：2018-05-09 09:52

本文选题：深海 + 流量控制特性　；参考：《西南交通大学》2011年硕士论文

【摘要】：随着陆地资源的匮乏和海洋探测技术的发展,目前,人类已经发现的海洋资源足够人类使用很长一段时间,但目前深海机械的发展还相对落后,主要原因在于深海环境要求深海机械具备抗高压、低故障率、耐低温和耐腐蚀的特性。液压源作为深海机械中重要的动力源设备,其性能的好坏将决定机械的工作性能,而流量作为液压源的重要输出量之一,将直接决定工作装置(如液压缸、液压马达)的运动速度等特性,因此,需要研究变量泵元件参数、系统其它参数和深海环境对液压系统的流量输出特性的影响。本论文的研究分以下几部分： (1)介绍液压油的密度、粘度等属性,并结合以往学界的研究成果,得出本论文适用的密度、粘度、有效体积弹性模量等计算公式； (2)结合物理定律(牛顿第二定律、动量守恒等),建立深海动力源仿真模型,并通过修改(电液比例阀阀芯质量、控制柱塞质量、PID控制器中Kp等)参数,分析研究阶跃输入信号下系统流量特性,以作为未来开发更为先进的深海液压源系统的参考； (3)深海环境下,系统的观察并不直观,因此,本文开发了一款能适用于深海环境的监测系统,该系统以Labview为软体,应用PCI8622采集卡为采集前端,采用基于高级语言的模块化设计简化了程序。此监测与分析程序既可以用于信号的监测与采集,同时,也可完成流量-压力曲线分析和幅频、相频特性分析； (4)在863项目的经费支持下,设计了深海液压动力源系统,并采用陆地模拟试验方式测试该系统。本文将阐述试验的试验方法、试验条件、试验设备和试验结论,通过高压模拟试验,研究分析了深海环境和流量输入电压对系统输出流量特性的影响,为深海控制器及变量泵开发提供了参考。
[Abstract]:With the scarcity of land resources and the development of marine exploration technology, human beings have found enough marine resources for a long period of time, but the development of deep-sea machinery is relatively backward. The main reason is that deep-sea environment requires deep-sea machinery to have the characteristics of high pressure resistance, low failure rate, low temperature resistance and corrosion resistance. As an important power source equipment in deep-sea machinery, the performance of hydraulic source will determine the working performance of machinery. As one of the important output quantity of hydraulic source, flow rate will directly determine the working device (such as hydraulic cylinder, for example, hydraulic cylinder). Therefore, it is necessary to study the influence of variable pump component parameters, other system parameters and deep-sea environment on the flow output characteristics of hydraulic system. The research of this thesis is divided into the following parts: 1) introduce the properties of hydraulic oil, such as density, viscosity and so on, and combine with the research results of previous academic circles, get the calculation formula of density, viscosity, effective volume elastic modulus of this paper; In combination with physical law (Newton's second law, momentum conservation etc.), the simulation model of deep-sea power source is established, and the parameters (mass of valve core of electro-hydraulic proportional valve, control of plunger mass in pid controller, etc.) are modified. The flow characteristics of the system under step input signal are analyzed and studied, which can be used as a reference for developing more advanced deep-sea hydraulic source system in the future. In the deep-sea environment, the observation of the system is not intuitionistic. Therefore, this paper develops a monitoring system suitable for the deep-sea environment. The system takes Labview as the software and uses the PCI8622 acquisition card as the acquisition front end. The modular design based on high-level language simplifies the program. The program can be used not only for signal monitoring and acquisition, but also for the analysis of flow-pressure curves and amplitude-frequency and phase-frequency characteristics. 4) with the support of 863 project, the deep sea hydraulic power source system is designed, and the system is tested by land simulation test. In this paper, the test methods, test conditions, test equipment and test conclusions are described. The effects of deep-sea environment and flow input voltage on the output flow characteristics of the system are studied and analyzed by high-voltage simulation test. It provides a reference for the development of deep-sea controller and variable pump.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH38

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