太阳能LED照明系统的可靠性预测研究

发布时间：2018-04-15 07:21

本文选题：太阳能照明系统 + 系统模型　；参考：《南昌航空大学》2017年硕士论文

【摘要】：可持续发展是本世纪人类面临的重大课题,而能源问题是实现可持续发展迫切需要解决的问题。开发新能源、提高能源利用效率是解决能源短缺的最有效方法。太阳能作为一种清洁无污染的绿色能源,已经得到越来越普遍的应用。近年来,太阳能LED照明产品因为其节能环保、光源寿命长而得到广泛使用。随着太阳能LED照明系统技术的不断完善和应用的日益普及,质保期、寿命等涉及产品可靠性的属性也逐渐受到关注,并日益成为衡量系统质量优劣的关键指标。因此,系统开展太阳能LED照明系统的可靠性研究工作,既可丰富其设计理论,也有助于从源头提升其可靠性水平。针对太阳能LED照明系统中存在的可靠性问题,论文在分析太阳能LED照明系统工作原理的基础上,假设太阳能照明系统部件的工作时间和控制开关的工作寿命均服从指数分布、各随机变量均相互独立且各子系统内部元器件为可靠性串联结构的条件下,根据市电互补太阳能LED照明系统的工作原理及其可靠性功能结构,应用三支路自动调配系统以及马尔科夫过程的相关知识,系统研究LED照明系统的可靠性:一是在分析控制子系统对整个系统两种不同的影响情况下,建立了太阳能照明系统的冷温贮备可靠性模型,并分别得出了系统在冷温贮备下的可靠性指标,如首次平均故障时间等;其次是引入维修等外部条件,建立系统的维修性模型,并得出其可靠性指标;三是在冷温贮备模型的基础之上分析了系统各支路故障的概率分布;最后将模型应用于某品牌太阳能LED照明产品,根据中国大陆地区日照时长以及工作设置时长为因素的区域聚类分析结果,估计其模型时间运行比参数,并通过对太阳能LED照明子系统内部关键元器件可靠性数据的收集,预计子系统一级的可靠性数据,最终根据模型得出其在不同地区的可靠性指标,验证了模型的正确性与适用性。太阳能LED照明系统可靠性与维修性模型建立了普遍适用于太阳能LED照明产品的子系统、单元、零部件与系统可靠性之间的函数关系,同时对太阳能LED照明系统故障的概率分布作出了初步探讨,使得在产品的研制过程中开展可靠度的预计与分配成为可能,也适用于预测产品安装使用后可靠度的变化趋势并为制定科学的售后维修策略提供了理论基础。论文研究工作对太阳能空调等具有类似工作原理的产品的系统可靠性研究也具有很好的借鉴价值。
[Abstract]:Sustainable development is an important task facing mankind in this century, and energy problem is an urgent problem to be solved in order to realize sustainable development.Developing new energy and improving energy efficiency are the most effective methods to solve energy shortage.As a clean and non-polluting green energy, solar energy has been used more and more widely.In recent years, solar LED lighting products have been widely used because of their energy saving and environmental protection, long light source life.With the continuous improvement and popularization of solar LED lighting system technology, the properties of product reliability, such as quality assurance period and life span, have been gradually concerned and become the key index to measure the quality of the system.Therefore, the research on the reliability of solar LED lighting system can not only enrich its design theory, but also help to improve its reliability level from the source.In order to solve the reliability problems in solar LED lighting system, based on the analysis of the working principle of solar energy LED lighting system, it is assumed that the working time of solar energy lighting system components and the working life of control switch are exponentially distributed.Under the condition that each random variable is independent of each other and the internal components of each subsystem are reliability series structure, according to the working principle and reliability functional structure of the complementary solar LED lighting system,The reliability of LED lighting system is studied systematically by applying the knowledge of automatic dispatching system of three branches and Markov process. Firstly, the influence of control subsystem on the whole system is analyzed.The reliability model of cold temperature storage of solar lighting system is established, and the reliability indexes of the system under cold temperature storage, such as the average failure time for the first time, are obtained, and the maintainability model of the system is established by introducing external conditions such as maintenance, etc.The reliability index is obtained. Thirdly, the probability distribution of each branch fault of the system is analyzed on the basis of the cold temperature storage model. Finally, the model is applied to a brand of solar LED lighting products.Based on the regional cluster analysis results of sunshine duration and working setup length in mainland China, the model time operation ratio parameters are estimated, and the reliability data of key components in solar LED lighting subsystem are collected.The reliability data at subsystem level are predicted and its reliability index in different regions is obtained according to the model, which verifies the correctness and applicability of the model.The reliability and maintainability model of solar LED lighting system has established the functional relationship between the subsystem, unit, parts and system reliability of solar energy LED lighting products.At the same time, the probabilistic distribution of the failure of solar LED lighting system is discussed, which makes it possible to predict and distribute the reliability in the process of product development.It is also applicable to predict the changing trend of reliability after installation and use and provide a theoretical basis for the formulation of scientific after-sales maintenance strategy.The research work of this paper also has a good reference value for the research of the system reliability of solar air conditioning and other products with similar working principle.
【学位授予单位】：南昌航空大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM923.34

【参考文献】