نتایج جستجو برای: varying fuzzy failure rates

تعداد نتایج: 1006040  

2005
Trung T. Pham

This paper extends the Prony method to the identification of a class of fuzzy systems parameterized by a set of time-varying parameters. The Prony formulation is an optimal solution minimizing the fluctuation effects while accurately estimating the time-varying system parameters. A closed-form and efficient algorithm for adaptively calculating the time-varying parameters is derived. This soluti...

2012
A. K. Shaw T. K. Roy

Generally fuzzy sets are used to analyze the fuzzy system reliability. Here intuitionistic fuzzy set theory has been used for analyzing the fuzzy system reliability. To analyze the fuzzy system reliability, the reliability of each component of the system is considered as a triangular intuitionistic fuzzy number. At first triangular intuitionistic fuzzy number and their arithmetic operations are...

2014
Sohag Kabir Ernest Edifor Martin Walker Neil A. Gordon

Fault tree analysis (FTA) has been modified in different ways to make it capable of performing quantitative and qualitative safety analysis with temporal gates, thereby overcoming its limitation in capturing sequential failure behaviour. However, for many systems, it is often very difficult to have exact failure rates of components due to increased complexity of systems, scarcity of necessary s...

2014
Mohd Salman Khan Kanchan Yadav

Supply Chain Management is an important deal between suppliers and customers which lead to the customer negotiation of prices at varying rates. Designing an effective strategy for bidding customer orders is also an intricate problem due to intense competition in fast changing market environment. With increasing technological advancement the trade environment has become more sophisticated and so...

2014
Jason Utt Sylvia Springorum Maximilian Köper Sabine Schulte im Walde

This paper discusses an extension of the V-measure (Rosenberg and Hirschberg, 2007), an entropy-based cluster evaluation metric. While the original work focused on evaluating hard clusterings, we introduce the Fuzzy V-measure which can be used on data that is inherently ambiguous. We perform multiple analyses varying the sizes and ambiguity rates and show that while entropy-based measures in ge...

Journal: :Appl. Soft Comput. 2011
Rahib Hidayat Abiyev Okyay Kaynak Tayseer Alshanableh Fakhreddin Mamedov

The integration of fuzzy systems and neural networks has recently become a popular approach in engineering fields for modelling and control of uncertain systems. This paper presents the development of novel type-2 neuro-fuzzy system for identification of time-varying systems and equalization of timevailable online 2 May 2010 eywords: ype-2 fuzzy systems euro-fuzzy network dentification varying ...

1998
Martin L. Leuschen Ian D. Walker Joseph R. Cavallaro

In the past few years, new applications of robots have increased the importance of robotic reliability and fault tolerance. Standard approaches of reliability engineering rely on the probability model, which is often inappropriate for this task due to a lack of su cient probabilistic information during the design and prototyping phases. Fuzzy logic o ers an alternative to the probability paradi...

Journal: :iranian journal of management studies 2014
seyyed habibollah mirghafouri faezeh asadian ardakani fatemeh azizi

the failure mode and effects analysis (fmea) is a widely used analytical technique that helps to identify and reduce the risks of failure in a system, component, or process. one important issue of fmea is the determination of the risk priorities of failure modes. risk ranking is produced in order to prioritize the focus on each of the failure modes that are identified. in this study, we applied...

2010
G. S. Mahapatra B. S. Mahapatra

We have presented trapezoidal intuitionistic fuzzy number. Arithmetic operations of trapezoidal intuitionistic fuzzy number is presented based on (α, β)-cuts. We have presented intuitionistic fuzzy fault tree analysis using trapezoidal intuitionistic fuzzy number. In application of intuitionistic fuzzy fault tree analysis, we have computed failure of fire protection system taking failure of eac...

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