http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Mohammad Ali Farsi 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.4
Reliability analysis is very important in a practical engineering system. As these systems in space industry such as spacecraft and satellite are used to increase analysis accuracy, the system should be modeled carefully. Since the systems can impress the mission succession. In the real world, usually systems have multilevel performance and components have multimode failures. But often the binary-state model is used to determination of the reliability of the system. Although, the binary-state is simple and useful, so it cannot capture real states of a system. Therefore, calculation accuracy is decreased and mission risk is increased. Especially, if functions and operations in a mission or a system have a dependency, for example, the operations sequentially were occurred. The solar array mechanism is an important sub-system in a satellite, since if this system is failed, power generation may be stopped and satellite is failed. In this paper, a new method is proposed to model and assess reliability via the Universal generating function (UGF) for a solar array mechanism. The capability of this model for evaluation and determination of the reliability of the solar array mechanism as the multi-state system is shown, that subsystems/components work in a logical order or sequence. In comparison to Boolean algebra and crude Monte Carlo methods, the accuracy of this method is acceptable.