Multiple Degree of Freedom Model of Giant Magnetostrictive Actuator

Medžiagotyra

Dongwei LI¹  Yezun SUN²  Zhaoshu YANG³  Ce RONG³  Zhongbo HE³  Peilin ZHANG³ 

[1] 1. College of Mechanism and Vehicle, Beijing Institute of Technology2. Vehicles and Electrical Engineering Department, Ordnance Engineering College;247 Military Representative Office, GAD Military representative Bureau;Vehicles and Electrical Engineering Department, Ordnance Engineering College;

关键词: giant magnetostrictive actuator, multiple degrees of freedom model, stable response, harmonic response, oil load;   

DOI  :  10.5755/j01.ms.23.3.16321

来源: DOAJ

【 摘 要 】

A specific giant magnetostrictive actuator is developed for injectors in high-pressure-common-rail system. The magnetic strength, with its axial distribution unevenness considered, is determined by the driving current and axial dimension. Multiple degrees of freedom model of the specific GMA is established based on J-A model and vibration theory. The number of degrees of freedom is optimized, and step response is calculated and its state-space model is provided and computed using MATLAB. Steady-state response and frequency response in moderate driving level is achieved and verified by the test results, and load contributed by fluid is regarded as elastic-damping load and the specific response of GMA in this case could be forecast. From measured result, the proposed multiple degrees of freedom model are amenable to describe the stable response of the specific GMA under low frequency harmonic driving.

DOI: http://dx.doi.org/10.5755/j01.ms.23.3.16321

【 授权许可】

Unknown