【作者】 谢强；

【导师】 邓斌；

【作者基本信息】 西南交通大学 ， 机械电子工程， 2011， 硕士

【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。更多还原

【Abstract】 With the deficilent of land resources and marine exploration technology development, at present, mankind has found that resources in dee-sea that can use for a long time, but the development of deep-sea machinery is relatively backward.because the deep sea environment requires the mechanical machine has the resistance with low failure rate, temperature and corrosion resistant properties. Hydraulic source as an important deep-sea mechanical power source equipment, the performance of it will determine the mechanical performance, and flow as an important source of output power, which will directly determine the working device (such as hydraulic cylinders, hydraulic motors) and velocity characteristics, therefore, we must study how the system parameters and the deep sea environment effect system performance of the flow.This rearch points the following sections:(1) Introduce hydraulic oil density,viscosity and other properties.obtain the formula of the density,viscosity,effective volume modulus of elasticity in this paper,combined with previous academic research results;(2) Establish the deep-sea simulation model of the power source with the laws of physics(conservation of momentum,Newton’s second law,etc).ansys the output signal of flow by modifying the parameters(electro-hydraulic proportional valve spool quality,the quality of control plunger,Kp of the PID controller,etc),as the future development of more advanced system of deep-sea power sourc reference;(3) In the deep-sea environment,the system is not directly observed,therefore,in this paper develop a deep-sea environment monitoring system,which use Labview as the software and use the card PCI8622 as the acquisition front-equipment capture.this monitoring system use the software modules based on high-level language design.the monitoring and analysis program can use for signal monitoring and collection,also can ansys the flow-pressure curve and amplitude frequency,phase-frequency characteristics;(4) Design the deep-sea hydraulic power source system in the funding of 863 projects,and use land-based simulation approach to test the power source system.this article will introduce the experimental methods,experimental conditions,experimental equipments and experimental results.through high-pressure simulation experiment,ansys the output signal of flow characteristics with the deep-sea environments and input voltage of the system,as referenc of developing deep-sea controller and variable pump.更多还原