The current development of material testing machine is expounded . the basic component and application of material testing machine are introduced . main characteristics and several typical design schemes of material testing machine are analyzed 第一章阐述了研究意义以及目前国内外材料试验机技术现状，介绍了材料试验机的基本组成及应用场合，分析了材料试验机的主要特点、典型控制方案和目前存在的问题。
The degrees of crystallinity of pure ptfe under the different conditions of water cooling , air cooling and furnace - varying cooling were made comparison by xrd . the thermal stability of pure ptfe and solid lubricant was analyzed by dsc - tg ; the composition and valence state of elements in the surface of carbon fiber , solid lubricant before and after friction test and lubricant transfer film were characterized by xps ; the frictional property of solid lubricant was tested by pin and disk test rig . the frictional wear property of solid lubricant between embedded bearing sleeve and steel axle friction pair ring was tested by special simulate test machine , the hardness of solid lubricant was tested by pm ; the compression strength of solid lubricant was tested by material test machine 用sem表征原料微观结构、摩擦表面及润滑转移膜表面形貌：用xrd进行原料物相分析，及比较水冷却、空气冷却、随炉冷却三种工艺条件下的纯聚四氟乙烯树脂的结晶度；用dsc - tg分析纯聚四氟乙烯树脂及固体润滑剂的热稳定性；用xps表征碳纤维表面、固体润滑剂摩擦前后表面、润滑转移膜表面的元素组成、价态变化；用销盘式摩擦磨损试验机对固体润滑剂进行摩擦性能测试；采用专用的台架模拟试验机对固体润滑剂镶嵌轴承套与钢轴摩擦副间的摩擦磨损性能进行测定；用莱次偏光显微镜( pm )测试固体润滑剂的硬度；用材料试验机测试固体润滑剂的抗压强度等。
In order to solve the problems that large energy consumption , temperature variation , high , cost trouble maintenance in current electro - hydraulic servo control system for material testing machine , a new design scheme that electro - hydraulic proportional control system for material testing machine based on extension control strategy is proposed . the design scheme is successful by means of designing new main frame system , hydraulic cylinder system , digital electro - hydraulic micro - fluid proportional valve and electrical control system , and its results lay a foundation for material testing machine industries in our country 针对国内外材料试验机主要采用电液伺服控制系统，存在能耗大、温升、成本高、维护困难等问题，本课题提出了基于可拓控制策略的材料试验机电比例负载适应控制系统这一新型研究方案，通过开发新型试验机主机系统、液压缸系统、数字式微小流量电液比例流量阀及电控系统，实现了材料试验机电液比例负载适应控制，为我国材料试验机自动控制系统的产业化打下了基础。
In order to solve the problems of narrow application range and unwieldy control mode in current material testing machine , a set of control modes and constraint conditions fitting whole material testing machine industries have been proposed for the first time , furthermore , a new software caries , which shows new design method for material testing machine , has been developed , and it submits reference for the automatic control system design of material testing machine industries 针对目前国内外材料试验机适用范围窄，各种控制方式不能灵活组合等问题，论文首次总结并提出了一套适合整个试验机行业的控制方式及约束推理条件，首次提出了一种新型capies软件结构设计方法，实现了各种控制模式之间平滑、稳定切换，扩大了材料试验机的适用范围，为整个试验机行业的自动控制系统的设计提供了依据和参考。
According to the urgency and the necessity of reconstructing material mechanics lab , plans and suggestions were put forward in six aspects which consist of reconstructing universal material machine and photo - elastic instrument , rebuilding electrical testing lab , increasing devisable experiments , adding virtual experiments , making exhibit - boards 摘要鉴于改造材料力学实验室的紧迫性和必要性，从改造万能材料试验机、光弹仪和电测实验间，增加设计型实验项目，增加虚拟实验，制作展示板等6个方面，提出了具体方案和建议。
Main frame system , hydraulic control system and electronic controller design method are presented in detail . in chapter 3 , the precious mathematics model about electro - hydraulic proportional control system of material testing machine is proposed . the digital simulation and theoretical analysis of load control system , position control system and extension control system are discussed according to various load type 第三章给出了材料试验机负载适应控制系统的数学模型，并针对不同的负载类型，对试验力控制系统、位置控制系统及变形控制系统进行了详细的理论分析及计算机仿真，并对理论分析和仿真结果作了讨论和总结。
In order to solve the problems of low accuracy and stability in domestic material testing machine and complicate structure , high cost and trouble maintenance in foreign material testing machine , a high quality and low cost digital measure and control system for material testing machine based on isa bus has been presented in this thesis and its performance indexes have been achieved and overachieved comparing with foreign advanced products , and it is important for the development of material testing machine industries in our country 针对国内材料试验机存在控制测量精度低、稳定性差，而国外试验机测量控制系统结构复杂、成本高、维护使用困难等问题，本课题研究开发了一种基于isa总线的高性能、低成本的全数字式材料试验机测控系统，该测控系统的各项技术指标均达到并超过了国外先进同类产品的性能指标，对我国高性能材料试验机行业的发展具有重要意义。
The company has the advanced precision casting , the machine - finishing equipment and the check - out facility , including : disk wax mould machine , moistening slurry machine , intermediate frequency melting furnaces , cnc tooling machine , spectrometer , metallurgical microscope , hardness testing machine , computer material test machine . and so on 公司拥有先进的精密铸造、机械加工设备及检测设备，其中包括：双工位射蜡机、圆盘射蜡机、沾浆机、中频熔化电炉，光谱分析仪、金相显微镜、硬度试验机、电脑万能材料试验机， cnc数控车床、普通钻铣床及阀门管件壳体、密封试验机等。
Based on studies on current developments of the material testing machine control system , a new project about electro - hydraulic proportional control system for material testing machine based on extension control strategy is proposed . after a lot of creative projective basic and systematic study on control system of material testing machine , many important conclusions have been drawn 论文根据目前国内外材料试验机控制系统的现状，确立了“基于可拓控制策略的材料试验机电液比例控制系统的研究”这一研究课题，围绕材料试验机电液比例控制系统这一研究对象，进行了具有创新性、基础性、工程性及系统性的研究工作，获得了许多重要结论。
