动磁式线性压缩机的动态特性  

Research on Dynamic Characteristics of Moving Magnet Linear Compressor

作　　者：毛君[1,2,3] 王宁 陈洪月 MAO Jun;WANG Ning;CHEN Hongyue(School of Mechanical Engineering,Liaoning Technical University,Fuxin Liaoning 123000,China;Dynamic Testing and Big Data Analysis Center of High-end Comprehensive Mining Equipment of Coal Industry Association,Fuxin Liaoning 123000,China;National Engineering Research Center for Mine Hydraulic Technology and Equipment,Fuxin Liaoning 123000,China)

机构地区：[1]辽宁工程技术大学机械工程学院,辽宁阜新123000 [2]煤炭工业协会高端综采成套装备动力学测试与大数据分析中心,辽宁阜新123000 [3]矿山液压技术与装备国家工程研究中心,辽宁阜新123000

出　　处：《机械设计与研究》2022年第2期205-209,214,共6页Machine Design And Research

基　　金：国家自然科学基金资助项目(51874157);国家重点研发计划资助项目(2017YFC08004305);辽宁省教育厅基础研究项目(LJ2020JCL026);2019年辽宁省高等学校创新人才(理)项目;辽宁工程技术大学创新领军团队(LNTU2TD-02)。

摘　　要：根据动子质量和弹簧刚度设计了一款动磁式线性压缩机样机,并建立了动磁式线性压缩机动力学模型,采用描述函数法对系统进行了动态特性分析,将非线性模型进行了线性化,得到了系统的运行方程组。对线性压缩机的系统进行了仿真及实验,得到了频率特性曲线,以及谐振频率下活塞位移和速度、电流、电磁力随时间变化的关系曲线。研究结果表明:当线性压缩机的绕组电流与活塞速度相位角大致为零时,电磁力与电流的相位角大致为零时,此时线性压缩机的电磁力与速度大致同相位,线性压缩机处于谐振状态,所设计的样机的行程约为10 mm,仿真结果与实验结果基本吻合,以上研究为直线压缩机的弹簧系统的谐振的设计提供理论指导。A moving magnet linear compressor prototype is designed based on the mover mass and spring stiffness,and a dynamic model of the moving magnet linear compressor is established by using description function method to analyze the dynamic characteristics of the system.Then,the nonlinear model is linearized,and the system’s equations of motion are obtained.The linear compressor system is simulated and tested,and the frequency characteristic curve are obtained,as well as the relationship curve of the displacement and speed of the piston,current,and electromagnetic force with time at the resonance frequency.The research results show that when the phase angle between the winding current of the linear compressor and the piston speed is approximately zero,and when the phase angle between the electromagnetic force and the current is approximately zero,the electromagnetic force and speed are approximately in phase and the linear compressor is in resonance.The stroke of the designed prototype is approximately 10 mm.The simulation results are consistent with the experimental results.This research provides theoretical guidance for designing the resonance of the spring system in the linear compressor.

关 键 词：线性压缩机 动磁式 动态特性 固有频率 

分 类 号：TB652[一般工业技术—制冷工程]