双向线性力马达力阶跃响应特性的研究  

Research on Force Step Response Characteristics of a Bi-directional Linear Force Motor

作　　者：李勇[1] 成泰洪[1] 申允德[1] 

机构地区：[1]温州大学机电工程学院,浙江温州325035

出　　处：《液压与气动》2014年第3期31-34,共4页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金项目(51305305);浙江省自然科学基金项目(LQ13E050010);浙江省教育厅科研项目(Y201120787)

摘　　要：针对提出的一种电液伺服阀用耐高压双向线性力马达,建立了基于瞬态电磁场理论的数学模型,通过有限元仿真分析了其力阶跃响应特性,并结合实验研究,对电压源和电流源两种驱动方式下的阶跃响应特性及成因进行对比分析。实验与仿真结果趋势基本一致,表明在电压源驱动方式下,电流和力阶跃响应时间分别为86 ms和108 ms;而在电流源驱动方式下,响应时间明显减小,电流和力阶跃响应时间分别为17 ms和33 ms。A bi-directional linear force motor for the electro-hydraulic servo valve was proposed, and a mathemati- cal model based on the theory of transient electromagnetic field was established. The force step response character- istics of the linear force motor were analyzed by the finite element method simulation. In combination with experi- ments, the step response characteristics of voltage and current sources were compared, and the reason was dis- cussed. The simulation results agree with that of experiment. The current and force step response time are respec- tively 86 ms and 108 ms when the motor is driven by the voltage source, but respectively 17 ms and 33 ms when driven by the current source.

关 键 词：线性力马达 力阶跃响应 瞬态电磁场 

分 类 号：TH137.52[机械工程—机械制造及自动化]