نوع مقاله : مقاله پژوهشی
نویسندگان
1 استادیار، دانشگاه آزاد اسلامی، واحد قزوین، دانشکده مهندسی صنایع و مکانیک، قزوین
2 دانشجوی دکترا، دانشگاه علامه طباطبائی، دانشکده حسابداری و مدیریت، تهران
چکیده
بهینه سازی قابلیت اطمینان و متوسط زمان ماندگاری سیستم همواره یکی از حوزه های مهم و جذاب برای
مهندسان و طراحان سیستم ها بوده است. هدف این مساله بهینه سازی، پیدا کردن تعداد بهینه قطعات مازادی
است که می بایست جهت ارضای اهداف مهندس قابلیت اطمینان در سیستم مورد استفاده قرار گیرند و تعادل
لازم میان منابع موجود نظیر بودجه، فضا و وزن برقرار شود. در تحقیقات گذشته، عموما مساله تخصیص
افزونگی در سیستم های با اجزای تعمیر ناپذیر و یا دارای نرخ خرابی با توزیع نمائی مورد بررسی قرار گرفته
است؛ اما در این تحقیق اجزاء تعمیر پذیر فرض گردیده و نرخ خرابی و تعمیر نیز از توزیع های غیر نمائی
پیروی می کنند که در حقیقت نوآوری اصلی این تحقیق است. برای مدل سازی از تکنیک شبیه سازی و برای
بهینه سازی مدل حاصل، از تکنیک های آماری، طراحی آزمایشان و روش های تصمیم گیری چند معیاره
استفاده شده است.
کلیدواژه‌ها
عنوان مقاله [English]
A Multi Objective Optimization Model for Redundancy Allocation Problem in Reparable Systems Using Multi Criteria Decision Making, Design of Experiments and Simulations Techniques
نویسندگان [English]
- Parham Azimi 1
- Farhad Hadinejad 2
چکیده [English]
Reliability optimization and mean time to failure are those of the areas of interest for engineers and designers of systems and the use of redundancy components is one of the most common approaches in this field. The purpose of the optimization problem, finding the optimum number of redundancy components that must be satisfied the objectives of reliability engineering in the system. But usually the reliability improves results in increased costs and changes in parameters such as volume and weight of the system; therefore, it is necessary to establish a balance between resources. In previous researches, redundancy allocation problem is studied with non-repairable components or failure rate with exponential distribution; but in this study, repairable components and rates of failure and repair a non-exponential distribution assumed. Thus the purpose of this paper is solving reliability redundancy allocation problem with the goals of increasing the mean time to failure, reduce costs and reduce the variance of the shelf life of the system, while taking into account constraints such as volume and weight of the system. To this end, the research effort will be using mathematical and statistical techniques such as multi criteria decision making models, design of experiments, simulations, and computer software associated with them, provide a new approach for solving reliability redundancy allocation problem in series-parallel systems with repairable components
کلیدواژه‌ها [English]
- Redundancy Allocation Problem
- Multi Objective Optimization
- Multi Criteria Decision Making
- Design of Experiments
- Simulation
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