نتایج جستجو برای: System reliability

تعداد نتایج: 2335584  

پایان نامه :0 1369

انعطاف پذیری سیستمهای الکترونیکی و میکروپروسسوری و کاربردهای زیاد آنها سبب شده که این سیسستمها به جای سیستمهای مکانیکی بکار روند ولی خرابی و اشکالات متنوع در سیستمهای الکترونیکی و مشکل بودن تعمیر آنها نسبت به سیستمهای مکانیکی سبب شده که روشهایی برای جبران یا تحمل خرابی در آنها ابداع شوند، بطوریکه سیستم بدون وقفه بکار خود ادامه دهد. به عبارت دیگر بوسیله این روشه قابلیت اطمینان سیستم بهبود می یاب...

Journal: :Frontiers of Engineering Management 2021

Journal: :international journal of smart electrical engineering 2014
manijeh alipour heresh seyedi

this paper presents a new centralized adaptive method under frequency load shedding. sometimes, after initial frequency drop following severe disturbances, although the system frequency returns to its permissible value, however, the system might become unstable due to voltage problems. in this regard, the paper proposes a new centralized adaptive load shedding method to enhance the voltage stab...

This investigation deals with transient analysis of cold standby system with n units . Chapman-Kolmogorov equations are developed for repair facility with two repairmen and solved by using matrix technique. Availability and reliability factors have been obtained with probability of the system. A particular case has also been discussed.

Journal: :علوم و فناوری فضایی 0
m. a. farsi a. a. eslami r. gorgin

separation system is one of the most important systems in rockets. the influence of this system on mission success cannot be ignored. in this paper, reliability of a sounding rocket separation system is determined using block diagram and fmea . this system is based on the flexible linear shape charge cross-section and a spring mechanism to accelerate separation. in this investigation, the relia...

Journal: :journal of optimization in industrial engineering 2016
hamed fazlollahtabar mohamma saidi-mehrabad

we compare two approaches for a markovian model in flexible manufacturing systems (fmss) using monte carlo simulation. the model which is a development of fazlollahtabar and saidi-mehrabad (2013), considers two features of automated flexible manufacturing systems equipped with automated guided vehicle (agv) namely, the reliability of machines and the reliability of agvs in a multiple agv jobsho...

ژورنال: اندیشه آماری 2015

In reliability theory, some measures are introduced , called importance measures, to evaluate the relative importance of individual components or groups of components in a system. Importance measures are quantitive criteria that ranke the components according to their importance. In the literature, different importance measures are presented based on different scenarios. These measures can b...

Journal: :IOP Conference Series: Earth and Environmental Science 2020

Journal: :Quality and Reliability Engineering International 1994

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