【作者】 高玲；

【导师】 俞建卫； 焦明华；

【作者基本信息】 合肥工业大学 ， 机械电子工程， 2003， 硕士

【摘要】 减振器是汽车、摩托车中一个关键的易损零部件，主要是内部导向套—活塞杆这对往复运动摩擦副的失效导致，因此研究此类型往复运动的摩擦磨损机理具有十分重要的实际意义和理论意义。本文在研究了减振器往复运动特点的基础上，提出并研究了基于虚拟仪器的往复式摩擦磨损试验实时测试系统。本文着重论述了根据往复运动特点建立的数学模型，实时测试系统的硬件设计，并且针对动态系统中的出现的误差进行了分析，提出了解决方案，在硬件的配合下以虚拟仪器技术和图形化的编程语言LabVIEW为核心，开发了并完成了基于虚拟仪器的往复式摩擦磨损试验实时测试系统。该系统具有稳定、可靠、操作界面友好的特点，并实现了数据的实时采样、实时分析处理、瞬间图形存储、图形再现、输出等功能，方便的对试验做出实时、量化的估计。由于其具有良好的频响特性，满足了试验的实时测试要求，并成功的将虚拟仪器技术与摩擦学试验结合起来，为摩擦学测试技术开辟了新的发展方向。更多还原

【Abstract】 As well known the shock absorber is a key part of auto & motorcycle that is easy to be failure. The guide bushing & piston rod is also easy to fail mostly in the shock absorber. Therefore it is very important practical and theoretical meaning to study friction & wear mechanism during this reciprocating movement. In this paper, a real-time measuring and testing system based on Virtual Instruments (VI) for reciprocating friction & wear experiment is proposed. The mathematical model of the test bed was given based on reciprocating characteristic. Again the hardware design and error analysis of real-time test system were shown as well. This real-time test system was completed through VI and the Graphic Programming Language -LabVIEW. It is a reliable system with friendly interfaces, which carries out the test data’s real-time sampling, analysis and handling, instantaneous graph saving, graph reoccurrence and exporting function etc. It can give the real-time and right results of tribology experiment. It can meet the tribology test’s real-time require because of good frequency characterization. In the test system, it is successful to use the Virtual Instrument technique in tribology experiment, which pioneered a novel method of measuring and testing technique of tribology.更多还原