Results 161 to 170 of about 10,089 (214)
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Design of fault‐tolerant control for MTTF
International Journal of Robust and Nonlinear Control, 2008AbstractMean time to failure (MTTF) is an important reliability index of fault‐tolerant control systems, which is chosen as a design objective in this paper. However, it is usually evaluated from stochastic reliability models, and no analytical expression is available to relate MTTF to controller parameters.
Li, Hongbin, Zhao, Qing
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MTTF Enhancement Power-C4 Bump Placement Optimization
IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 2019Constructing a reliable power delivery network (PDN) is increasingly challenging by further technology scaling. PDN suffers from long-term reliability threats such as electromigration (EM). EM results in permanent failures and directly affects chip lifetime and voltage stability. Loss of limited controlled collapse chip connection (C4) pads to EM makes
Somayeh Rahimipour +5 more
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A simple Markovian method for MTTF calculation
Microelectronics Reliability, 1987Abstract The MTTF of a system design with constant failure and repair rates and with some forms of stand-by redundancy and switching is an important characteristic of the system. Commonly, calculation of the MTTF requires knowledge of the reliability function R(t), which is integrated to yield the MTTF.
A. Dubi, A. Goldfeld, D. Sasson
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NOTE ON MTTF OF A PARALLEL SYSTEM
International Journal of Reliability, Quality and Safety Engineering, 2011A parallel system with n identical units is considered, and its mean time to system failure (MTTF) is obtained when the failure time is exponential. A simple asymptotic method of computing MTTF is proposed and its approximal values are compared with the exact MTTFs when the failure time has a Weibull distribution.
TOSHIO NAKAGAWA, WON YOUNG YUN
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Cryocooler MTTF prediction at high operating temperature
Infrared Technology and Applications Lexaly +2 more sources
The failure of MTTF in availability evaluation
Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318), 2003In this paper, a truncated bathtub is proposed to model the failure rate of a product with perfect burn-in. We expose some counter-intuition observations, e.g., increasing the MTTF does not necessarily increase the average and instantaneous availability during the product's lifetime, and the average and instantaneous availability could be improved ...
null Hairong Sun, J.J. Han
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Quantitative analysis of MTTF of composite web services
Journal of the Chinese Institute of Engineers, 2013Although the reliability of the composition of web services (WS) has attracted much research work, an important facet of it – meantime to failure (MTTF) has not been given enough consideration. The research presented in this paper intends to fill this gap by illustrating on an example of composite WS how the redundant system works and what kinds of ...
Tao Hu +6 more
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Conditional MTTF and its computation in Markov reliability models
Annual Reliability and Maintainability Symposium 1993 Proceedings, 2002The authors discuss the notion of conditional MTTF (mean time to failure) and develop an efficient computational method for the absorption probability and conditional MTTF in a finite state-space Markov model. The method requires the solution of two systems of linear equations of size n, where n is the number of transient states in the Markov chain ...
H. Choi, K.S. Trivedi
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MTTF-aware design methodology for adaptive voltage scaling
2018 China Semiconductor Technology International Conference (CSTIC), 2018Adaptive voltage scaling (AVS) is a promising approach to overcome manufacturing variability, dynamic environmental fluctuation, and aging. This paper focuses on design of AVS circuits. For pursuing efficient AVS, this work presents a design methodology that optimizes both voltage-scaled circuit and voltage control logic achieving practical long mean ...
Masanori Hashimoto, Yutaka Masuda
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Computing the Availability and MTTF of Shared Protection Systems
7th IEEE International Conference on Computer and Information Technology (CIT 2007), 2007In this paper we investigate the reliability of shared protection systems such as one for N (1:N) that can be applied to access network node devices. We describe the effectiveness of such a protection system in a quantitative manner. The mathematical analysis gives closed form solutions of the availability and MTTF (Mean Time to Failure) perceived by ...
Hirokazu Ozaki, Atsushi Kara
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