喷油器用超磁致伸缩致动器结构设计及输出特性实验研究  

Structural design and output performance testing of giant magnetostrictive actuator for electronic controlled fuel injector

作　　者：荣策 何忠波 薛光明 刘国平 RONG Ce;HE Zhong-bo;XUE Guang-ming;LIU Guo-ping(Shijiazhuang Campus,Army Engineering University,Shijiazhuang 050003,China;Troop 63969 of PLA,Nanjing 211113,China)

机构地区：[1]陆军工程大学石家庄校区,河北石家庄050003 [2]中国人民解放军63969部队,江苏南京211113

出　　处：《磁性材料及器件》2023年第1期50-59,共10页Journal of Magnetic Materials and Devices

基　　金：国家自然科学基金资助项目(51275525)。

摘　　要：根据非直驱式高压共轨电控喷油器的驱动需求,设计了喷油器用超磁致伸缩致动器(GMA),完成了GMA样机制作和输出性能测试。首先,采用GMM筒与“T”形输出杆嵌套配合的结构形式,设计了喷油器用GMA,通电时可输出上行位移;然后,将GMA划分为三个功能模块,依据设计需求,计算了各模块主要部件结构参数的约束条件,确定了GMA的主要尺寸参数;最后,对GMA输出特性进行了试验测试。结果表明:设计的GMA稳态位移大于40μm,在工作频率范围内,输出位移较为稳定,位移-电流迟滞较小;在专用电源驱动下,响应时间短于1 ms,满足预期设计需求。Based on the actuation requirement of the indirectly drive common-rail electronic controlled fuel injector(ECI),a novel giant magnetostrictive actuator(GMA)for ECI is designed using a proposed design framework.A prototype of the designed GMA is manufactured,and the output performance is tested by the experimental system.Firstly,utilizing the concentrically-assembled GMM tube and T-shaped rod,the designed GMA can realize upward movement while electrified.Then,according to the design indices,the constraint conditions of the main dimensional parameters of GMA are calculated,by dividing the overall structure into three modules,and the structural parameters of GMA for ECI are determined.Finally,a series of experiments are conducted to test the output characteristics of the designed GMA.The results indicate that the steady-state displacement of GMA can reach 40μm.Within the operating frequency band,the output displacement of GMA merely fluctuates little,and the displacement-current delay can always remain in low level.Under the self-designed excitation source,the response time of GMA is less than 1 ms,satisfying the expected requirement.

关 键 词：电控喷油器 超磁致伸缩致动器 结构设计 输出特性 试验测试 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]