Research on hysteresis loop considering the prestress effect and electrical input dynamics for a giant magnetostrictive actuator

Abstract

In this paper, focusing on the application-oriented giant magnetostrictive material (GMM)-based electro-hydrostatic actuator, which features an applied magnetic field at high frequency and high amplitude, and concentrating on the static and dynamic characteristics of a giant magnetostrictive actuator (GMA) considering the prestress effect on the GMM rod and the electrical input dynamics involving the power amplifier and the inductive coil, a methodology for studying the static and dynamic characteristics of a GMA using the hysteresis loop as a tool is developed. A GMA that can display the preforce on the GMM rod in real-time is designed, and a magnetostrictive model dependent on the prestress on a GMM rod instead of the existing quadratic domain rotation model is proposed. Additionally, an electrical input dynamics model to excite GMA is developed according to the simplified circuit diagram, and the corresponding parameters are identified by the experimental data. A dynamic magnetization model with the eddy current effect is deduced according to the Jiles-Atherton model and the Maxwell equations. Next, all of the parameters, including the electrical input characteristics, the dynamic magnetization and the mechanical structure of GMA, are identified by the experimental data from the current response, magnetization response and displacement response, respectively. Finally, a comprehensive comparison between the model results and experimental data is performed, and the results show that the test data agree well with the presented model results. An analysis on the relation between the GMA displacement response and the parameters from the electrical input dynamics, magnetization dynamics and mechanical structural dynamics is performed.

Asymmetric Hysteresis Modeling Approach Featuring “Inertial System + Shape Function” for Magnetostrictive Actuators

“…Combining Equations (17) and (20) and using w in Equation 17as the input of the shape function, considering that the hysteresis of magnetostrictive actuators generally contains a linear component, the ISSF-Duhem model with Grompertz function-based shape function (G-Model) describing the hysteresis of magnetostrictive actuators can be given by…”

“…Investigations on the nonlinearity of magnetostrictive actuators and hysteresis models have been conducted for years. Jiles-Atherton (J-A) model [11] and its extended models [12][13][14][15][16][17] were proposed to capture the hysteresis nonlinearity via the domain wall theory. However, the J-A model shows disadvantages in describing minor loops [16].…”

Development of a magnetostrictive material–based electro-hydrostatic actuator with an active rotary rectifying valve

“…The power amplifier is used to convert and amplify the input voltage from the signal generator to output coil current and the inside circuitry can be seen as RC circuits with the load of coil inductance. The relationship between the output current and the input voltage can be described as a second-order system 23…”

A Modified Prandtl-Ishlinskii Hysteresis Modeling Method with Load-dependent Delay for Characterizing Magnetostrictive Actuated Systems

“…The characterization of effect from the load on the actuator's output has been attempted in a few studies (Zheng et al, 2007;Zhu et al, 2016). In Zhang et al (2013), a magnetostrictive actuated platform was conducted to show input-output hysteresis properties considering the external stress under the fixed operating frequency, and a stress-dependent PI hysteresis model was subsequently proposed to show the negative effects from the load.…”