超磁致伸缩换能器能量回收非线性拓频仿真分析  

Simulation and analysis on 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;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]国家能源集团中国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：《传感器与微系统》2022年第12期42-46,共5页Transducer and Microsystem Technologies

基　　金：内蒙古自治区自然科学基金资助项目(2020LH05023)。

摘　　要：为拓宽超磁致伸缩换能器能量回收装置的频带宽度,通过分析换能器工作原理,基于牛顿第二定律建立系统动力学方程,应用多尺度法求解得到幅频响应方程,仿真发现三次刚度系数的影响使换能器的输出具有一定的非线性特性。在非线性特性基础上建立能量回收理论模型,研究设计参数对能量回收频带宽度和感应电压幅值的影响得知:与线性系统相比,软式非线性系统可以使有效带宽增加40%,但感应电压峰值有所降低;硬式非线性系统可使有效带宽增加42%,同时感应电压峰值也可增加28%;预应力对能量回收效果的影响较小;系统的能量回收效果随着阻尼系数的增大而减小;线性刚度不仅能够改变系统的频带宽度和感应电压峰值,也可以调整能量回收的频带范围。In order to broaden the bandwidth of the energy recovery device of the giant magnetostrictive transducer, the system dynamics equations are established based on Newton’s second law by analyzing the working principle of transducers, the amplitude-frequency response equations are solved by the multi-scale method.The simulation found that the influence of the cubic stiffness coefficient makes the output of the transducer have a certain nonlinear characteristic.A theoretical model of energy recovery is established on the basis of non-linear characteristics, the influence of system design parameters on bandwidth and induced voltage amplitude is studied: compared with the linear system, soft nonlinear systems can increase the effective bandwidth by 40 %,but the induced voltage peak is reduced;hard nonlinear system can increase the effective bandwidth by 42 %,the induced voltage peak can also be increased by 28 %;the prestress has a small effect on the energy recovery;the energy recovery effect of the system decreases as the damping coefficient increase;linear stiffness coefficient can change the bandwidth, the peak value of induced voltage and the frequency range of energy recovery system.

关 键 词：超磁致伸缩换能器 能量回收 非线性 拓频 仿真 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TH16[自动化与计算机技术—控制科学与工程]