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| Model transformation and reliability analysis for electromechanical similitude system |
| LIAN Jin-Yi, SHI Qing-Lu, SUN Da-Gang |
College of Mechanical & Electronic Engineering, Taiyuan University of Science and Technology,
Taiyuan 030024, China |
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Abstract There are many machinery systems extensively applied in engineering, which means it is difficult to analysis its reliability. But the reliability technique to circuitry system is comparatively mature. The reliability parameters of electronic component are also rather identified. The paper presented a method based on electromechanical similitude model. A basic machinery system and a basic electricity system were considered. Basic kinematics equations in them have very accordant form, that is, a couple of similar systems. When power of electricity system is voltage, the similarity system is a similitude of force-voltage. When power of electricity system is electric current, the similarity system is a similitude of force-current. Using the electromechanical similarity system may transform a machinery system to a similarity simple electricity system. We could use electric circuit theory to analyze and simulate machinery system. Owing electric circuit system is composed of basic seriesparallel components, and reliability parameters such as failure index of electric circuit system are known, using of the method of paper by similarity electric system could confirm the facility relation of parts and analyze reliability of machinery system.
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Published: 28 December 2010
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机电相似系统的模型转换与可靠性分析
工程应用中有大量构成复杂、功能繁多的机械系统,要对其进行适宜的可靠性分析有一定的难度,而电路系统的可靠性研究技术较为成熟,电子元件的可靠性参数也比较明确.为此,提出一种基于机电相似原理的模糊可靠性方法,给出了机械系统与电路系统进行相似分析的基本原理,并对力/电压机电相似和力/电流机电相似两种分析模型给出了运动方程,提出了可靠性分析的方法,利用该方法可以解决某些工程系统的可靠性计算问题.
关键词：
机械系统,
可靠性,
模型,
机电相似
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