In general, every system is in one of the three states： normal, abnormal, or failure state. When the system is diagnosed as abnormal state, it needs predictive maintenance, lfthe system fails, an identical new one wi...In general, every system is in one of the three states： normal, abnormal, or failure state. When the system is diagnosed as abnormal state, it needs predictive maintenance, lfthe system fails, an identical new one will replace it. The predictive maintenance cannot make the system ＂as good as new＂. Under these assumptions, the reliability index and the inspection-replacement policy of a system were studied. The explicit expression of the reliability index and the average income rate （i.e., the long-run average income per unit time） are derived by using probability analysis and vector Markov process method. The criterion of feasibility for the optimal inspection-replacement policy under the maximum average income rate is obtained. The numerical example shows the optimal inspection-replacement policy can raise the average income rate when the optimal inspection-replacement policy is feasible.展开更多
With the rapid development of Chinas waste copper rice recycling industry, the waste metal materials are separated from the waste copper rice, copper wire, and recycled again. As one of the most important raw material...With the rapid development of Chinas waste copper rice recycling industry, the waste metal materials are separated from the waste copper rice, copper wire, and recycled again. As one of the most important raw materials for copper smelting, it occupies a very large proportion. According to the development status at home and abroad, its recycling can not only alleviate the lack of copper resources, but also in line with the current situation of national energy conservation, emission reduction and environmental protection. In view of the problems in the inspection process, the department protects the legitimate interests of the enterprise by means of risk prevention and control, improving the operation mechanism and improving the inspection methods.展开更多
基金Project supported by the National Hi-Tech Research and Develop-ment Program (863) of China (No. 2005AA505101-506)theNational Natural Science Foundation of China (No. 50477030)
文摘In general, every system is in one of the three states： normal, abnormal, or failure state. When the system is diagnosed as abnormal state, it needs predictive maintenance, lfthe system fails, an identical new one will replace it. The predictive maintenance cannot make the system ＂as good as new＂. Under these assumptions, the reliability index and the inspection-replacement policy of a system were studied. The explicit expression of the reliability index and the average income rate （i.e., the long-run average income per unit time） are derived by using probability analysis and vector Markov process method. The criterion of feasibility for the optimal inspection-replacement policy under the maximum average income rate is obtained. The numerical example shows the optimal inspection-replacement policy can raise the average income rate when the optimal inspection-replacement policy is feasible.
文摘With the rapid development of Chinas waste copper rice recycling industry, the waste metal materials are separated from the waste copper rice, copper wire, and recycled again. As one of the most important raw materials for copper smelting, it occupies a very large proportion. According to the development status at home and abroad, its recycling can not only alleviate the lack of copper resources, but also in line with the current situation of national energy conservation, emission reduction and environmental protection. In view of the problems in the inspection process, the department protects the legitimate interests of the enterprise by means of risk prevention and control, improving the operation mechanism and improving the inspection methods.
