强振动下比例电磁铁输出力特性研究

发布时间：2018-11-16 08:12

【摘要】：为研究强振动对比例电磁铁输出力特性的影响,应用电磁场理论和强迫振动理论建立了强振动环境下比例电磁铁的动态数学模型和仿真模型,仿真分析了不同振动参数下比例电磁铁的气隙磁阻、动生感应电动势及输出力的变化规律,讨论了强振动对电磁铁输出力的影响原理。同时分析了衔铁质量、阻尼系数、弹簧刚度对比例电磁铁输出力波动的影响规律。结果表明:强振动幅值和频率与电磁铁的动生感应电动势的波动幅值正相关;比例电磁铁的气隙磁阻和输出力的波动幅值与强振动幅值呈线性正相关;随阻尼系数的增加,比例电磁铁输出力的波动幅值近似线性减小;弹簧刚度小于20 000N/m时比例电磁铁的输出力波动幅值随刚度增加而快速减小。研究结果为提高振动环境下比例元件的工作性能提供了理论参考。
[Abstract]:In order to study the effect of strong vibration on the output force characteristics of proportional electromagnet, the dynamic mathematical model and simulation model of proportional electromagnet in strong vibration environment were established by using electromagnetic field theory and forced vibration theory. The air gap magnetoresistive force, dynamic induction electromotive force and output force of proportional electromagnet under different vibration parameters are simulated and analyzed, and the influence principle of strong vibration on the output force of electromagnet is discussed. At the same time, the influence of armature mass, damping coefficient and spring stiffness on the output force fluctuation of proportional electromagnet is analyzed. The results show that the amplitude and frequency of strong vibration are positively correlated with the fluctuation amplitude of dynamic induced electromotive force of electromagnet, the fluctuation amplitude of air gap magnetoresistance and output force of proportional electromagnet is linearly positive correlation with the amplitude of strong vibration. With the increase of damping coefficient, the amplitude of output force of proportional electromagnet decreases linearly, and the amplitude of output force of proportional electromagnet decreases rapidly with the increase of stiffness when spring stiffness is less than 20 000N/m. The results provide a theoretical reference for improving the performance of proportional components in vibration environment.
【作者单位】： 中南大学机电工程学院;中南大学高性能复杂制造国家重点实验室;
【基金】：国家重点基础研究发展计划(973计划)资助项目(2013CB035400)
【分类号】：U455.3
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本文编号：2334969