Discussion on dynamic reliability tolerance design technology of electromagnetic relay

Reliability tolerance design of electromagnetic relay during its design period plays an essential role in guaranteeing the consistencies of reliability and output characteristic. The reliability tolerance design can ensure that the products would work well under the influence of disturbing factors (including internal interference, external interference, and machining dispersion). Com- pared with static characteristic, dynamic characteristic of electromagnetic relay can describe its operating process better. This article researches influence of the three kinds of disturbing factors on the dynamic characteristic of electromagnetic relay based on calculating dynamic characteristic. Then, the dynamic reliability tolerance design method of electromagnetic relay is discussed considering three kinds of disturbing factors. Conclusions reached can help to assure the reliability of electromagnetic relay from the beginning of design.

航天电磁继电器可靠性容差分析技术的研究(英文)

Electromagnetic relay in aerospace is one of the main electronic components in aerospace electronic systems for information transfer, control and power distribution, and its reliability will influence the reliability of the whole aerospace electronic systems. Reliability design is the key technique of electromagnetic relay reliability engineering. This paper synthetically analyzes the present reliability design methods, and presents the reliability tolerance analyzing mathematic models of electromagnetic force basing on orthogonal design, mechanical spring force basing on probability statistics theory, and matching characteristics of electromagnetic force and mechanical spring force basing on method of stressstrength interference. Some instructive conclusions are draw by researching on the reliability tolerance of some type electromagnetic relay in aerospace.

军用电磁继电器容差设计可靠度计算方法

基于军用电磁继电器产品设计中缺乏容差设计阶段,无法给出定量的可靠性指标,在介绍军用电磁继电器容差设计原理和设计过程的基础上,给出了容差设计阶段定量可靠性指标———可靠度的计算方法,实现了容差设计从理论研究到实际应用的过渡。给出了一个计算实例。该计算方法亦可推广应用于其他产品的容差设计阶段。

三相磁保持继电器动态特性分析及容差设计

基于ADAMS软件建立三相磁保持继电器的仿真模型,将试验与仿真数据进行对比,验证了仿真模型的准确性;同时研究分析其动态特性,提出以3个触头分断速度作为目标函数,进行继电器电磁系统容差设计。通过分析设计参数贡献率,找出对触头分断速度分散性影响大的设计参数,并进行容差再分配,对减小触头分断速度分散性具有重要意义。

电磁继电器可靠性容差设计方法的综合分析与讨论

阐述了电磁继电器可靠性设计工作的重要性 ,综合分析了国内外可靠性设计方法及可靠性容差设计方法的研究现状 ,分析了产品可靠性容差设计要解决的主要问题 ,提出了电磁断电器可靠性容差设计方法的主要研究内容。

高压直流继电器电磁系统的优化设计

电磁系统是高压直流继电器的关键组成部分.其中导磁部件的磁饱和情况、涡流现象及结构参数等影响着电磁系统的工作性能.针对该问题,建立继电器电磁系统有限元模型,并进行实验验证.以提高继电器吸持力、降低吸合时间为目标,利用正交试验法对继电器电磁系统进行优化设计.优化过程中通过磁场法分析工作气隙磁通密度的分布情况,并结合继电器在工作过程中导磁部件的磁饱和现象,锁定动铁心横截面积、静铁心厚度和垫片厚度作为优化变量.根据正交试验方差分析法确定三者的最优水平组合与影响动态特性的显著程度.加工优化样机,并进行实验,实验结果表明,该优化方案可以有效地提高继电器吸持力、降低吸合时间.

基于正交试验的直流电磁继电器优化设计

为了提升继电器的产品性能和优化产品设计,研究继电器结构参数对动态特性的影响,并通过正交试验方法确定继电器优化参数。首先验证继电器动态特性仿真模型和实物样机的一致性,借助仿真模型探究继电器不同结构参数对动态特性的影响情况。以触点间隙、衔铁初始角度和工作气隙长度为调整参数,以触点接触压力和磁路稳定闭合时间为评价指标,进行三因素四水平的正交试验设计;分析试验结果,得出3种因素对评价指标的影响情况。最后,以试验数据为基础选取最佳参数组合,提出优化方案,提高了产品设计效率,为样机制造提供参考。