【作者】 冯智海；

【导师】 窦满锋；

【作者基本信息】 西北工业大学 ， 电机与电器， 2005， 硕士

【摘要】 依据可靠性设计理论,结合本课题所研制的两项产品 1.FY-3卫星太阳帆板电池阵展开机构及微波成像仪配套用驱动机构,2.空警200自动驾驶仪配套机构配平舵机用驱动机构,进行电机的可靠性设计与分析。 本课题根据航空航天领域要求驱动机构质量轻、体积小、可靠度高的特点,提出选用有刷直流电机作为驱动结构,并采用单转子组件余度的结构形式。采用故障模式影响及危害性分析、故障树分析两项可靠性分析技术相结合的方法,全面分析电机发生故障的主要因素、电机零部件的薄弱环节及隐患,并在电机的可靠性设计中采取相应的措施加以改进;提出采用电磁场数值解法准确计算永磁体的漏磁系数,结合磁路计算优化设计;在结构设计方面,给出主要部件的选用依据及方法途径,结合三维制图软件UG完善设计。针对真空条件下直流电机的换向问题,分析影响换向困难的主要因素,提出相应的改进措施并通过试验验证,试验结果表明改进后电机在真空中的工作寿命延长30倍。 研制的太阳帆板电池阵展开机构直流电机通过专家鉴定,获技术水平处于国内领先,达到国际先进水平的好评。研制的配平舵机用驱动机构作为自动驾驶仪上新研制的产品于2005年1月装机成功试飞。更多还原

【Abstract】 According to the base theory of reliability in design and two products generated from the project: 1. The drive structure used for FY-3 satellite solar array outspread machinery and microwave imaging apparatus, 2. The drive structure used for making balance of steering engine for air-guard 200 autopilot, the reliability design and analysis of electrical machines are carried out.In term of requests of drive structure in the field of aerospace and aeronautics: lighter weight, smaller volume measure, higher reliability, this project expounds using direct current motor as drive structure and single roter component reduncdancy structure mode. The major facors of motor malfunctions and weakness and incipient fault of the units of motor are analyzed fully. Also some methods are raised for improving the reliability design of motors by the combination way of failure mode effect, criticality analysis and fault tree analysis. Calculating the leakage magnet coefficient accurately by electromagnetic amount method is brought out. And the design can be optimized with magnetic circuit calculation. In design of structure, how to choose main units is given and the design can be ameliorate by 3-D software Unigraphics. For commutating badly in DC motor which operates in vacuum, the paper assays the main reasons that effect commutation, then gives improved ways .The results manifests that motor working life is prolonged 30 times.The DC motor used for FY-3 satellite solar array outspread machinery is appraised. And praised highly by specialists for interior priority and international lever. The drive structure used for making balance of steering engine for air-guard 200 autopilot also gets successful test- flying in Jan. 2005 as new parts in the system.更多还原