Analysis of the giant magnetostrictive actuator with strong bias magnetic field

2015 ◽  
Vol 394 ◽  
pp. 416-421 ◽  
Author(s):  
Guangming Xue ◽  
Zhongbo He ◽  
Dongwei Li ◽  
Zhaoshu Yang ◽  
Zhenglong Zhao
Keyword(s):  
Magnetic Field ◽  
Bias Magnetic Field ◽  
Magnetostrictive Actuator

Displacement model of the giant magnetostrictive actuator with strong bias magnetic field at low frequency

2016 ◽  
Vol 230 (19) ◽  
pp. 3568-3574
Author(s):  
Xue Guangming ◽  
Zhang Peilin ◽  
He Zhongbo ◽  
Li Dongwei ◽  
Yang Zhaoshu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Low Frequency ◽  
Experimental System ◽  
Bias Field ◽  
Bias Magnetic Field ◽  
Exciting Frequency ◽  
Magnetostrictive Actuator ◽  
Mass Spring ◽  
Displacement Model ◽  
The Relationship

A giant magnetostrictive actuator is designed with strong bias magnetic field. The influence of the strong bias field is introduced, and the corresponding exciting input signal is selected. Magnetic reluctance estimation, approximate linearity between the strain and magnetic field, and a mass–spring–damper system assumption are employed to analyze the actuator’s displacement with low-frequency signal input. An experimental system is designed, and properties of the proposed actuator are tested. With the help of square wave test, appropriate direction of exciting signal for the magnetostrictive actuator is determined. With the help of sinusoidal wave test, the established model is validated and the relationship between the maximum value of the displacement and of the current is analyzed. With exciting frequency lower than 200 Hz, the errors between the calculating and testing results are within 1.0 m, which validates the model.

Topology Option of Bias Magnetic Field for Magnetostrictive Actuator

2014 ◽  
Vol 787 ◽  
pp. 295-299 ◽  
Author(s):  
Qing Xia ◽  
Tian Li Zhang ◽  
Jin An Yu ◽  
Cheng Bao Jiang
Keyword(s):  
Magnetic Field ◽  
Uniform Magnetic Field ◽  
Main Tool ◽  
Diameter Ratio ◽  
Bias Magnetic Field ◽  
Element Analysis ◽  
Giant Magnetostrictive Material ◽  
Magnetostrictive Actuator ◽  
Length To Diameter Ratio ◽  
Moving Parts

In the design of giant magnetostrictive material (GMM) actuator, the bias magnetic field is a vital part. For the use of GMM rod in the magnetostrictive actuator, there are two typical topology structures, in-line structure and coaxial structure. Although these structures have been used in the design of magnetostrictive actuator, little work has been done to compare the general features for concrete application conditions. In this paper, we use finite element analysis (FEA) as the main tool to analyze and compare these structures and come to a conclusion that, as to a diameter-limited actuator, when the length to diameter ratio of the rod is less than 5, coaxial actuator can provide more uniform magnetic field and less moving parts; when the length to diameter ratio of rod is 5, the field inhomogeneity is nearly equal, and coaxial actuator uses less moving parts and in-line actuator cost less permanent magnet (PM); when the length to diameter ratio of rod is more than 5, in-line actuator can provide more uniform magnetic field and use less PM.

Structure design and driving voltage optimization of a novel giant magnetostrictive actuator

2017 ◽  
Vol 31 (03) ◽  
pp. 1750022 ◽  
Author(s):  
Guangming Xue ◽  
Peilin Zhang ◽  
Zhongbo He ◽  
Dongwei Li ◽  
Canwei Cai
Keyword(s):  
Magnetic Field ◽  
High Speed ◽  
Current Model ◽  
Experimental System ◽  
Structure Design ◽  
Driving Voltage ◽  
Bias Magnetic Field ◽  
Zero Bias ◽  
Voltage Wave ◽  
Magnetostrictive Actuator

Typical giant magnetostrictive actuator (GMA) cannot meet the requirement of driving a high-speed on–off valve for limitation in bias magnetic field exerted on giant magnetostrictive material. To solve this problem, a novel GMA is designed with zero bias magnetic field. Furthermore, to satisfy the requirement of the displacement direction, a “T” type transfer rod is joined to convert material’s elongating into actuator’s shortening. Simultaneously, long responding time of the actuator, especially the rising time of coil current, is also considered in this paper. The transient-state current is modeled based on the equivalent circuit considering parallel resistance of the coil, and from computed result, high opening voltage can be taken to promote responding speed of the actuator, and then an optimized driving voltage wave is presented. At last, with the help of an experimental system, the current model is verified and the driving effect of optimized voltage wave is tested and analyzed.

Non-linear dynamics of the Villari effect in the presence of a non-homogeneous magnetic field

2018 ◽  
Vol 233 (4) ◽  
pp. 431-440
Author(s):  
Andrzej Rysak ◽  
Magdalena Gregorczyk
Keyword(s):  
Magnetic Field ◽  
Time Series ◽  
Hysteresis Loops ◽  
Bias Field ◽  
Homogeneous Magnetic Field ◽  
Operating Conditions ◽  
Bias Magnetic Field ◽  
Linear Dynamics ◽  
Non Linear ◽  
Magnetostrictive Devices

Investigations of systems with an active magnetostrictive element generally assume the presence of an external homogeneous bias magnetic field. This article, however, presents the results of a study investigating a bimorph magnetostrictive-aluminium beam vibrating in a non-homogeneous bias field. By comparing results obtained under different operating conditions of the system, the combined effect of the non-linear beam stress and the non-homogeneous external magnetic field on the dynamics of the Villari phenomenon is determined. The preliminary results prove that the application of non-linear magnetic fields to the magnetostrictive devices ensures the extension of energy harvesting bandwidth of these devices and can be used to improve their control possibilities. A study of time series and hysteresis loops provides more detailed information about the non-linear magnetization and dynamics of the system.

Modeling and analysis of magnetic field distribution for stack giant magnetostrictive actuator

2017 ◽  
Vol 25 (9) ◽  
pp. 2347-2358 ◽  
Author(s):  
何忠波 HE Zhong-bo ◽  
荣 策 RONG Ce ◽  
李冬伟 LI Dong-wei ◽  
薛光明 XUE Guang-ming ◽  
郑佳伟 ZHENG Jia-wei
Keyword(s):  
Magnetic Field ◽  
Field Distribution ◽  
Magnetic Field Distribution ◽  
Modeling And Analysis ◽  
Magnetostrictive Actuator

The Study of 3-D Magnetic Field Finite Element Analysis for Giant Magnetostrictive Actuator

2012 ◽  
Vol 605-607 ◽  
pp. 1427-1430 ◽  
Author(s):  
Fan Zhang ◽  
Zhi Xin Ma ◽  
Shang Gao
Keyword(s):  
Magnetic Field ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Analysis Model ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Magnetic Field Model ◽  
Working Principle ◽  
Magnetostrictive Actuator ◽  
D Model

Based on the structure and working principle of our giant magnetostrictive actuator (GMA), the properties of the driving magnetic field were researched. A 3-D nonlinear magnetic field model of the GMA was established with the finite element analysis method, and the magnetic field distribution of the GMA was obtained with the software ANSYS. Then the 3-D model helped us to find the effects about the distribution of magnetic field of the GMA from the structure. The 3-D magnetic field finite element analysis model can give us a new tool of GMA design and analysis.

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