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轴承试验器
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  bearing testing machine
     Design of measurement and control system of bearing testing machine based on C++ Builder
     基于C++Builder的轴承试验器测控系统
短句来源
     The measurement and control system of bearing testing machine based on C++ Builder is introduced.
     介绍了基于C + +Builder的轴承试验器测控系统的设计 .
短句来源
  相似匹配句对
     Design of measurement and control system of bearing testing machine based on C++ Builder
     基于C++Builder的轴承试验器测控系统
短句来源
     Gas Bearings
     气轴承
短句来源
     The measurement and control system of bearing testing machine based on C++ Builder is introduced.
     介绍了基于C + +Builder的轴承试验器测控系统的设计 .
短句来源
     THE PRINCIPLE OF MAGNETIC SUSPENSION BEARING
     磁悬浮轴承的原理
短句来源
     HIGH TEMPERATURE DIELECTRIC STRENGTH TESTER
     高温介电强度试验器
短句来源
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  bearing testing machine
The Large Bearing Testing Machine has been developed and primarily used for commercial testing of large bearings.
      
The Small Bearing Testing Machine is highly versatile and is capable of applying simultaneous compression or tension, shear and rotation on specimens.
      


A relation is deduced among the three parameters:number of tested samples、operation time and confidence coefficient.2 52 times the normal load was applied to each sample and the test lasted more than 110 hours.After a given test time the tested samples were checked up with the bearings which had worked for about 1000 hours in the aeroengine in respect of the features of rolling raceway,microhardness,surface roughness、metallographic structure and...

A relation is deduced among the three parameters:number of tested samples、operation time and confidence coefficient.2 52 times the normal load was applied to each sample and the test lasted more than 110 hours.After a given test time the tested samples were checked up with the bearings which had worked for about 1000 hours in the aeroengine in respect of the features of rolling raceway,microhardness,surface roughness、metallographic structure and base hardness,etc.It is shown that the equivalence of those bearing samples is quite good.The data processing of the comparative tests indicates that the acceleration coefficient is 9 1 and the confidence coefficient is 89 7%.So it is believed that the research provides a practicable and reasonable method for life determination and life prolongation of the long life bearings on the test bed,and for acceptance tests of aeroengine bearings.

介绍了针对航空轴承小批量特点,运用寿命加速原理导出了适当样本数、考核时间及置信度之间的关系,并用某桨型发动机主轴承作为试件,在轴承试验器上进行8套试件每套110小时强化试验研究。试验中采用3种测试手段进行综合的失效监控;对试件与样品进行5项内容的等效性检测与对比分析。结果表明其等效性和加速系数(9.1)与置信度(89.7%)均令人满意。为航空部门长期尚未解决的长寿命发动机主轴承定、延寿及轴承产品鉴定验收环节提供了重要方法。

The measurement and control system of bearing testing machine based on C++ Builder is introduced.The system is made up of industrial control computer,inverter and measuring unit.Using Fuzzy-PID arithmetic and digital filtering,through module software,the rotate speed and press can be controlled.It is proved by the practical result that it has merits of high control precision and reliability.

介绍了基于C + +Builder的轴承试验器测控系统的设计 .该设计由工业控制机、变频器、测试单元等组成闭环控制系统 ,采用Fuzzy—PID控制算法、数字滤波等技术 ,并通过模块化软件设计实现对转速、载荷的控制 .实际运行表明 ,该系统具有控制精度高、运行稳定可靠等特点 .

 
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