超磁致伸缩换能器能量回收非线性拓频研究  

Nonlinear frequency expansion of giant magnetostrictive transducer energy recovery

作　　者：闫洪波[1] 曹蕊 汪建新[1] 于均成 付鑫 YAN Hongbo;CAO Rui;WANG Jianxin;YU Juncheng;FU Xin(College of Mechanical Engineering,Inner Mongolia University of Science&Technology,Baotou 014010,China;Shenhua Coal to Liquid and Chemical Ordos Coal Liquefaction Company,China Energy Investment,Ordos 017209,China)

机构地区：[1]内蒙古科技大学机械工程学院,内蒙古包头014010 [2]国家能源集团神华煤制油化工公司鄂尔多斯煤制油分公司,内蒙古鄂尔多斯017209

出　　处：《兵器材料科学与工程》2021年第6期21-26,共6页Ordnance Material Science and Engineering

基　　金：科技部创新方法工作专项资助项目(2017M010600-03);内蒙古自治区自然科学基金(2020LH05023)。

摘　　要：为拓宽能量回收的有效频带范围,提高能量回收率,分析超磁致伸缩换能器工作原理,基于牛顿第二定律建立系统动力学方程,用多尺度法得到系统的幅频响应方程。结果表明:仿真发现系统的输出呈硬式非线性特性;在此基础上建立能量回收理论模型,分析负载电阻感应电压大于0.2 V的有效频带宽度得出,与线性系统相比,非线性系统能使系统的有效带宽拓宽约54%,感应电压峰值增大约26%;为进一步调整系统的有效频带范围,为非线性系统引入加速度时滞反馈控制,仿真通过调整控制增益和时滞可调整系统有效频带范围。In order to widen the effective frequency band range and improve the efficiency of energy recovery,the system dynamics equation was established according to Newton′s second law by analyzing the working principle of transducer,the multiscale method was used to solve the system amplitude-frequency response equation. The results show that the system′s output presents hard nonlinear characteristics. The energy recovery theoretical model is established based on the nonlinear characteristics and the effective bandwidth of the induced voltage greater than 0.2 V on the load resistance is analyzed. The conclusions show that the nonlinear system can broaden the effective bandwidth by about 54%,the induced voltage can also increase by about 26%,compared with linear system. In order to further adjust the effective frequency band range of the system,the acceleration time-feedback control is introduced to the nonlinear system. The simulation found that the effective frequency band range of the system can be adjusted by changing the control gain and time-delay.

关 键 词：超磁致伸缩换能器 能量回收 非线性 拓频 

分 类 号：TH16[机械工程—机械制造及自动化]