ISSN:0748-8017    

DOI:10.1002/qre.4680070202

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

摘要:

AbstractThe Next European Torus (NET) must be operated with appropriate reliability and availability levels if it is to attain its targets. A basic simulation model, the principles and potentials of which had been previously demonstrated, has been considerably extended to provide a more accurate representation of the operations of NET and to facilitate its study under various operating and reliability considerations. The latest simulation model of NET incorporates the physics phase as well as the technology phase. It encompasses complex features such as time and event dependent failure rates and independent failures. For ease of manipulating the uncertainties associated with the reliability data, the model has been furnished with the normal, exponential, lognormal and Weibull distribution modules. The level of subsystem breakdown is easily adjustable to match the needs of the design that is growing in detail. A goal‐seeking procedure has been developed for use in conjunction with the simulation model. The application of this procedure culminates in operating and reliability strategies which will enable NET to achieve its intended targets. This paper describes the operating and reliability features of NET together with the ways in which they have been captured by the NET simulation model. The underlying philosophy and application of the goal seeking procedure is also demonstrated through illustrative result

ISSN:0748-8017    

DOI:10.1002/qre.4680070203

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

摘要:

AbstractA drift‐fault diagnosing method is presented based on fault curves fitted to changes in a single characteristic of a system performance curve such as the peak of the step response. The method consists of fitting a fault curve, for each potential fault in the system, to samples of the characteristic produced under different levels of the faults. Unknown faults are then diagnosed, irrespective of severity, by seeing which fault curve is closest to the characteristic produced by the system under test. It is argued that this method is very appropriate for diagnosing faults detected by condition monitoring systems since these will be drift faults, and because the method can be applied to normal operational signals without the need to inject special test signal

ISSN:0748-8017    

DOI:10.1002/qre.4680070204

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

摘要:

AbstractIn the last two decades it has become clear that component lifetime distributions are seldom exponential. Early failures due to flaws have been of major concern. Various models to cater for this observation have been suggested. The models have been developed from a component rather from a system point of view. Furthermore, no substitute for the heavily criticized MIL‐HDBK‐217‐type prediction handbooks has been offered.This paper describes a recently developed methodology to arrive at realistic component reliability characteristics, which take into account the non‐exponential component lifetime distributions. These characteristics are developed from a system's point of view, which makes it easier for the system manufacturer to assess the reliability of their systems in the field.The methodology is based on six years of research in field performance of electronic systems. The research has been carried out in close co‐operation with industrial

ISSN:0748-8017    

DOI:10.1002/qre.4680070205

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

ISSN:0748-8017    

DOI:10.1002/qre.4680070206

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

ISSN:0748-8017    

DOI:10.1002/qre.4680070207

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

ISSN:0748-8017    

DOI:10.1002/qre.4680070208

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

ISSN:0748-8017    

DOI:10.1002/qre.4680070209

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

ISSN:0748-8017    

DOI:10.1002/qre.4680070210

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

ISSN:0748-8017    

DOI:10.1002/qre.4680070214

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY