基于正交试验设计的电磁继电器关键调整参数及优化方法

在电磁继电器调试阶段,调整参数的工艺控制直接影响继电器的反力特性,从而使吸、反力配合发生改变,最终影响到继电器的触点分断速度,分断速度的变化对继电器的电寿命产生重要影响.本文以调整参数(包括衔铁行程、返簧预压力矩、静合压力、触点间隙和动合超程)为因素,触点分断速度为指标,进行五因素四水平正交试验设计,分析、研究影响分断速度的关键参数.研究结果表明衔铁行程、触点间隙和动合超程为影响静合触点分断速度的关键参数,动合超程为影响动合触点分断速度的关键参数.最后在此基础上提出调整参数的优化方法.

Key Adjusted Parameters and Optimum Method of Electromagnetic Relay Based on Orthogonal Experimental Design

On the stage of electromagnetic relay's being adjusted, the technical control of adjusted parameters directly affects relays' characteristics of reaction force, and changes the match of attractive force and reaction force. It eventually influences the breaking velocity of relay's contacts. And the change of contacts' breaking velocity has a great effect on relays' electrical lifespan. Taking adjusted parameters (including armature's maximum angular displacement, initial return spring's force, normally closed contacts' force, contacts' gap and normally open contacts' over travel) as factors and breaking velocities as targets, this paper does the orthogonal experimental design of five factors and four levels, analyzes and investigates the key adjusted parameters influencing breaking velocities. The research results indicate that α_(arm_max),δ_(gap) and δ_(NO_(_contacts)) are the key factors affecting breaking velocity of NC contacts, δ_(NO_(_contacts)) is the key factor affecting breaking velocity of NO contacts. Then, based on the above work, optimum method of adjusted parameters is presented.