scholarly journals Review of Modeling and Control of Magnetostrictive Actuators

Actuators ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 45 ◽  
Author(s):  
Valerio Apicella ◽  
Carmine Stefano Clemente ◽  
Daniele Davino ◽  
Damiano Leone ◽  
Ciro Visone
Keyword(s):  
Energy Density ◽  
Smart Materials ◽  
Scientific Literature ◽  
Piezoelectric Actuators ◽  
Industrial Applications ◽  
Direct Effects ◽  
Modeling And Control ◽  
Magnetostrictive Actuators ◽  
And Control

Magnetostrictive actuators play an important role in the perception of usefulness of smart materials and devices. Their applications are potentially wider than that of piezoelectric actuators because of the higher energy density and intrinsic robustness. However, the non-negligible hysteresis and complexity of their characteristics make the design and control quite difficult and has limited their diffusion in industrial applications. Nevertheless, the scientific literature presents a wide offer of results in design and geometries, modeling and control that may be exploited for applications. This paper gives a reasoned review of the main results achieved in the literature about design, modeling and control of magnetostrictive actuators exploiting the direct effects of magnetostriction (Joule and Wiedemann). Some perspectives and challenges about magnetostrictive actuators development are also gathered.

Modeling and Control with Hysteresis of Piezoelectric Smart Materials Actuators

2013 ◽  
Vol 397-400 ◽  
pp. 1426-1429
Author(s):  
Yan Mei Liu ◽  
Zhen Chen ◽  
Xue Zheng Zhuang ◽  
Zhao Hui Liu
Keyword(s):  
Piezoelectric Actuator ◽  
Smart Materials ◽  
Piezoelectric Actuators ◽  
Recursive Identification ◽  
Uniform Density ◽  
Sensors And Actuators ◽  
Modeling And Control ◽  
Preisach Operator ◽  
Effective Use ◽  
And Control

Hysteresis hinders the effective use of piezoelectric smart materials in sensors and actuators. This paper proposes a hybrid model that can precisely portray hysteresis in piezoelectric actuators, which is constructed by a preisach operator with a piecewise uniform density function. Then, the corresponding inverse model for hysteresis is developed. It studies online recursive identification of hysteresis drift. Based on the obtained models, a method for simultaneous compensation of the hysteresis of piezoelectric actuator is applied to the control of system nonlinearities. Simulation and experimental results based on an IPMC actuator are provided to illustrate the proposed approach. The result verified the validity of the model and effectiveness of the controller.

Conceptual design of a selectable fractional-order differentiator for industrial applications

2014 ◽  
Vol 17 (3) ◽  
Author(s):  
Emmanuel Gonzalez ◽  
Ľubomír Dorčák ◽  
Concepción Monje ◽  
Juraj Valsa ◽  
Felicito Caluyo ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Fractional Order ◽  
Industrial Applications ◽  
Modeling And Control ◽  
Integer Order ◽  
Research Areas ◽  
Fractional Order Differentiator ◽  
Main Components ◽  
And Control ◽  
Fractional Order Pid

AbstractIn the past decade, researchers working on fractional-order systems modeling and control have been considering working on the design and development of analog and digital fractional-order differentiators, i.e. circuits that can perform non-integer-order differentiation. It has been one of the major research areas under such field due to proven advantages over its integer-order counterparts. In particular, traditional integer-order proportional-integral-derivative (PID) controllers seem to be outperformed by fractional-order PID (FOPID or PIλDμ) controllers. Many researches have emerged presenting the possibility of designing analog and digital fractional-order differentiators, but only restricted to a fixed order. In this paper, we present the conceptual design of a variable fractional-order differentiator in which the order can be selected from 0 to 1 with an increment of 0.05. The analog conceptual design utilizes operational amplifiers and resistor-capacitor ladders as main components, while a generic microcontroller is introduced for switching purposes. Simulation results through Matlab and LTSpiceIV show that the designed resistor-capacitor ladders can perform as analog fractional-order differentiation.

scholarly journals Modeling and Control for Giant Magnetostrictive Actuators with Rate-Dependent Hysteresis

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Ping Liu ◽  
Zhen Zhang ◽  
Jianqin Mao
Keyword(s):  
Relevance Vector Machine ◽  
Modeling And Control ◽  
Rate Dependent ◽  
Hysteresis Nonlinearity ◽  
Control Scheme ◽  
Giant Magnetostrictive Materials ◽  
Magnetostrictive Actuators ◽  
Magnetostrictive Actuator ◽  
And Control ◽  
Major Impediment

The rate-dependent hysteresis in giant magnetostrictive materials is a major impediment to the application of such material in actuators. In this paper, a relevance vector machine (RVM) model is proposed for describing the hysteresis nonlinearity under varying input current. It is possible to construct a unique dynamic model in a given rate range for a rate-dependent hysteresis system using the sinusoidal scanning signals as the training set input signal. Subsequently, a proportional integral derivative (PID) control scheme combined with a feedforward compensation is implemented on a giant magnetostrictive actuator (GMA) for real-time precise trajectory tracking. Simulations and experiments both verify the effectiveness and the practicality of the proposed modeling and control methods.

Analysis and Design of Smart Structures to Control Vibration and Noise

2007 ◽  
Author(s):  
Ulrich Gabbert ◽  
Jean Lefe`vre ◽  
Tamara Nestorovic´ ◽  
Stefan Ringwelski
Keyword(s):  
Finite Element ◽  
Smart Materials ◽  
Piezoelectric Actuators ◽  
Element Model ◽  
Industrial Applications ◽  
Measured Data ◽  
Analysis And Design ◽  
Lightweight Structures ◽  
Simulation Results ◽  
Acoustic Fluid

The paper presents an overall analysis and design approach for smart lightweight structures to actively reduce vibration and noise. As smart materials, distributed piezoelectric patches are attached to the structure. The basis of the approach is an overall finite element model, which includes the structure itself, the acoustic fluid, the piezoelectric actuators and sensors as well as the controller. As a test example a smart acoustic box is simulated and the simulation results are compared with measured data. Finally, also industrial applications are briefly presented.

scholarly journals Experimental results for active control of multimodal vibrations by optimally placed piezoelectric actuators

2018 ◽  
Vol 211 ◽  
pp. 20001 ◽  
Author(s):  
Andrea Rossi ◽  
Fabio Botta ◽  
Roberto Maiozzi ◽  
Andrea Scorza ◽  
Salvatore Andrea Sciuto
Keyword(s):  
Cantilever Beam ◽  
Smart Materials ◽  
Potential Distribution ◽  
Passive Control ◽  
Piezoelectric Actuators ◽  
Vibration Damping ◽  
Active Systems ◽  
Electrodynamic Shaker ◽  
And Performance ◽  
And Control

Vibration damping is an effective strategy to enhance the life-cycle and performance of mechanical components. In this regard passive control systems involve lower costs and are easier to implement but their bandwidth is limited, whereas active systems provide larger bandwidth and higher adaptability to dynamic loads but higher costs and complexity are required. The recent advances in smart materials promoted the development of smart structures suitable for vibration damping and control. Between them the piezoelectric systems seem to be the most promising, however their efficiency relies on their placement. In a previous work the authors proposed and validated an analytical method to detect the optimal location of piezoelectric plates to control the multi-modal vibrations of a cantilever beam. Recent findings show that, if all actuators are activated simultaneously, the optimization problem can be traced back to the determination of the optimal potential distribution on all the piezoelectric actuators. In this paper the above method is taken into account and applied to a cantilever beam with 13 pairs of surface mounted PZT plates under the excitation provided by an electrodynamic shaker. The experimental damping of two flexural modes combinations has been performed by means of a special-purpose workbench and the assessment of the damping efficiency has been measured by means of a micro I.C.P. accelerometer. The results showed that the multimode vibrations of the cantilever beam can be efficiently damped if the potential distribution on all the PZT plates is optimized.

Sign in / Sign up

Export Citation Format

Share Document