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《Journal of Northeastern University(Natural Science)》 2014-01
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Determination About Preventive Maintenance Time of the Repairable System

SUN Zhi-li;WANG Jian;YIN Ming-ang;YANG Qiang;School of Mechanical Engineering & Automation, Northeastern University;  
A method was proposed to determine preventive maintenance time for repairable and maintainable systems. The life cycle w as defined by building the joint density function of w orking time and maintenance time. Considering the profit during w orking time and the loss during maintenance time,the function betw een unit time profit expectation and preventive maintenance time T in a life cycle w as confirmed by applying the theory of mathematical expectation of random variable function. The optimal objective is to maximize the unit time profit expectation. Newton's method w as used to confirm the optimal preventive maintenance time,then the corresponding reliability w ould be confirmed based on the optimal objective. A numerical example show ed that the proposed model is valid. The distribution parameter effect on the optimum preventive maintenance time w as analyzed.
【Fund】: 国家自然科学基金资助项目(51205052)
【CateGory Index】: TH17
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