{"title":"未经测试的m -of- n系统的渐近不可用性","authors":"N.J. McCormick","doi":"10.1016/0143-8174(87)90042-4","DOIUrl":null,"url":null,"abstract":"<div><p>A simple closed form equation is presented for the asymptotic unavailability of a system consisting of N identical units of which M are required for operation. Nonoperating units can fail during standby, and at most R failed units can be under repair at any time. A Markov model is assumed, e.g. the units fail randomly and require a random time interval for repair; there are no periodic inspections or tests. The equation has useful pedagogical applications since there are six independent variables that can be changed.</p></div>","PeriodicalId":101070,"journal":{"name":"Reliability Engineering","volume":"17 3","pages":"Pages 189-191"},"PeriodicalIF":0.0000,"publicationDate":"1987-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0143-8174(87)90042-4","citationCount":"0","resultStr":"{\"title\":\"Asymptotic unavailability for an M-out-of-N system without testing\",\"authors\":\"N.J. McCormick\",\"doi\":\"10.1016/0143-8174(87)90042-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A simple closed form equation is presented for the asymptotic unavailability of a system consisting of N identical units of which M are required for operation. Nonoperating units can fail during standby, and at most R failed units can be under repair at any time. A Markov model is assumed, e.g. the units fail randomly and require a random time interval for repair; there are no periodic inspections or tests. The equation has useful pedagogical applications since there are six independent variables that can be changed.</p></div>\",\"PeriodicalId\":101070,\"journal\":{\"name\":\"Reliability Engineering\",\"volume\":\"17 3\",\"pages\":\"Pages 189-191\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1987-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0143-8174(87)90042-4\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Reliability Engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0143817487900424\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reliability Engineering","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0143817487900424","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Asymptotic unavailability for an M-out-of-N system without testing
A simple closed form equation is presented for the asymptotic unavailability of a system consisting of N identical units of which M are required for operation. Nonoperating units can fail during standby, and at most R failed units can be under repair at any time. A Markov model is assumed, e.g. the units fail randomly and require a random time interval for repair; there are no periodic inspections or tests. The equation has useful pedagogical applications since there are six independent variables that can be changed.