通信卫星可靠性冗余优化的两阶段方法

IF 1 Q3 MULTIDISCIPLINARY SCIENCES gazi university journal of science Pub Date : 2023-05-24 DOI:10.35378/gujs.1186561
Gazi University, T. Teti̇k, G. Das, B. Birgoren
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引用次数: 0

摘要

通信卫星项目的开发和发射带来了重大挑战和成本。根据任务目标、卫星系统规模和复杂性(包括运载火箭)以及地面基础设施等因素,费用可能从数亿美元不等。卫星的设计必须能够承受太空中的恶劣条件,如极端温度、辐射和其他危险,同时为用户提供可靠的通信服务。然而,一旦卫星发射,一旦出现技术问题,物理维护干预就变得不可行。因此,可靠性是这些昂贵系统的一个关键方面。本研究旨在通过在不超过功率和冗余设备限制的情况下满足客户可靠性要求的设计考虑,最大限度地降低高科技通信卫星的成本。为了实现这一目标,我们在本研究中提出了一个整数非线性规划模型。为了解决卫星设计问题,我们采用了两阶段解决方案。卫星设计中的常规工业实践通常涉及基于客户可靠性要求确定机载单元冗余级别的迭代尝试。这些过程在很大程度上依赖于设计工程师的经验,他们对有限数量的备选方案进行评估,以确定冗余单元的数量,从而产生次优结果。相反,我们提出的方法系统地处理了这个问题,并产生了最佳结果。我们的研究结果表明,所提出的两阶段方法可以在几秒钟内实现最佳冗余级别。
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A Two-Phase Approach for Reliability-Redundancy Optimization of a Communication Satellite
The development and launch of communication satellite projects pose significant challenges and costs. The expenses can range from several hundred million dollars, contingent on factors such as mission objectives, satellite system size and complexity including the launch vehicle, and ground infrastructure. Satellites must be designed to withstand harsh conditions in space, such as the extreme temperatures, radiation, and other hazards, while delivering reliable communication services to its users. However, once a satellite is launched, physical maintenance interventions become infeasible in the event of technical problems. Thus, reliability is a critical aspect for these expensive systems. This study aims to minimize the cost of a high-tech communication satellite by addressing design considerations that meet customer reliability requirements without exceeding power and redundant equipment limits. To achieve this goal, we propose an integer non-linear programming model in this research. To solve the satellite design problem, we adopt a two-stage solution approach. Conventional industrial practices in satellite design often involve iterative attempts to determine the redundancy level of onboard units based on customer reliability requirements. These processes rely heavily on the experience of design engineers who evaluate a limited number of alternatives to determine the number of redundant units, resulting in sub-optimal outcomes. In contrast, our proposed approach systematically handles the problem and yields optimal results. Our findings demonstrate that the proposed two-phase approach can achieve optimal redundancy levels within seconds.
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来源期刊
gazi university journal of science
gazi university journal of science MULTIDISCIPLINARY SCIENCES-
CiteScore
1.60
自引率
11.10%
发文量
87
期刊介绍: The scope of the “Gazi University Journal of Science” comprises such as original research on all aspects of basic science, engineering and technology. Original research results, scientific reviews and short communication notes in various fields of science and technology are considered for publication. The publication language of the journal is English. Manuscripts previously published in another journal are not accepted. Manuscripts with a suitable balance of practice and theory are preferred. A review article is expected to give in-depth information and satisfying evaluation of a specific scientific or technologic subject, supported with an extensive list of sources. Short communication notes prepared by researchers who would like to share the first outcomes of their on-going, original research work are welcome.
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