Comparison of Model-free and Model-based Control Techniques for a Positioning Actuator based on Magnetic Shape Memory Alloys

Binetti, Giulio; Leonetti, Giuseppe; Naso, David; Turchiano, Biagio

doi:10.1109/icmech.2015.7083989

Cited by 4 publications

(3 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In [29] the design of linear feedback controllers validated on an MSMA push-push actuator is presented. The comparison of different model-free and model-based techniques is described in [30]. Finally, it should be mentioned that other techniques for hysteresis modelling include Generalized PIM (GPIM) [31], hyperbolic tangent [32], Hamiltonian and port Hamiltonian modeling [12,33], and Phaser [34].…”

Section: Current State In Msma Actuator Design Modeling and Controlmentioning

confidence: 99%

Design, modelling and control of a micro-positioning actuator based on magnetic shape memory alloys

Minorowicz¹,

Leonetti²,

Stefański³

et al. 2016

Smart Mater. Struct.

View full text Add to dashboard Cite

This paper presents an actuator based on magnetic shape memory alloys (MSMAs) suitable for precise positioning in a wide range (up to 1 mm). The actuator is based on the spring returned operating mode and uses a Smalley wave spring to maintain the same operating parameters of a classical coil spring, while being characterized by a smaller dimension. The MSMA element inside the actuator provides a deformation when excited by an external magnetic field, but its behavior is characterized by an asymmetric and saturated hysteresis. Thus, two models are exploited in this work to represent such a non-linear behavior, i.e., the modified and generalized Prandtl-Ishlinskii models. These models are particularly suitable for control purposes due to the existence of their analytical inversion that can be easily exploited in real time control systems. To this aim, this paper investigates three closed-loop control strategies, namely a classical PID regulator, a PID regulator with direct hysteresis compensation, and a combined PID and feedforward compensation strategy. The effectiveness of both modelling and control strategies applied to the designed MSMA-based actuator is illustrated by means of experimental results.

show abstract

Section: Current State In Msma Actuator Design Modeling and Controlmentioning

confidence: 99%

Design, modelling and control of a micro-positioning actuator based on magnetic shape memory alloys

Minorowicz¹,

Leonetti²,

Stefański³

et al. 2016

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…Furthermore, the presented results are only limited to tracing results of a low frequency (5 Hz) sine wave and do not investigate the performance of this control approach for a dynamic response or at a wider frequency bandwidth. When using smart materials for actuating positioning systems in other applications described in literature [25,26], controllers with hysteresis compensation have shown to provide better performance.…”

Section: Introductionmentioning

confidence: 97%

Non-linear control of a hydraulic piezo-valve using a generalised Prandtl–Ishlinskii hysteresis model

Stefański

Minorowicz

Persson

et al. 2017

Mechanical Systems and Signal Processing

View full text Add to dashboard Cite

a b s t r a c tThe potential to actuate proportional flow control valves using piezoelectric ceramics or other smart materials has been investigated for a number of years. Although performance advantages compared to electromagnetic actuation have been demonstrated, a major obstacle has proven to be ferroelectric hysteresis, which is typically 20% for a piezoelectric actuator. In this paper, a detailed study of valve control methods incorporating hysteresis compensation is made for the first time. Experimental results are obtained from a novel spool valve actuated by a multi-layer piezoelectric ring bender. A generalised PrandtlIshlinskii model, fitted to experimental training data from the prototype valve, is used to model hysteresis empirically. This form of model is analytically invertible and is used to compensate for hysteresis in the prototype valve both open loop, and in several configurations of closed loop real time control system. The closed loop control configurations use PID (Proportional Integral Derivative) control with either the inverse hysteresis model in the forward path or in a command feedforward path. Performance is compared to both open and closed loop control without hysteresis compensation via step and frequency response results. Results show a significant improvement in accuracy and dynamic performance using hysteresis compensation in open loop, but where valve position feedback is available for closed loop control the improvements are smaller, and so conventional PID control may well be sufficient. It is concluded that the ability to combine state-of-the-art multi-layer piezoelectric bending actuators with either sophisticated hysteresis compensation or closed loop control provides a route for the creation of a new generation of high performance piezoelectric valves.

show abstract

“…Moreover, the system response can be considered only in a very limited manner. State-space system models are typically used for control applications, for example, for hysteresis compensation in position control (Binetti et al, 2015;Riccardi et al, 2012;Ruderman and Bertram, 2014). Usually, the entire electro-mechanical actuator behavior of an already existing MSM actuators is considered.…”

Section: Introductionmentioning

confidence: 99%

A thermodynamically consistent lumped-element model for magnetic shape memory components

Ehle

Stark

Neumeister

et al. 2023

Journal of Intelligent Material Systems and Structures

View full text Add to dashboard Cite

A novel lumped-element modeling approach for magnetic shape memory alloys is presented. Building on concepts borrowed from rate-independent plasticity, the model describes the magnetic and magneto-mechanical behavior of a magnetic shape memory component subjected to a particular load case in a thermodynamically consistent way. The approach remedies the common issues of existing models regarding the representation of inner hysteresis loops and small-signal behavior. The model is parametrized in terms of a small number of parameters, which can be determined from single variant magnetic curves and mechanical first order reversal curves at constant magnetic input. The results indicate that the model predicts the magnetic and magneto-mechanical behavior with sufficient accuracy, which makes it appropriate for system design.

show abstract

Comparison of Model-free and Model-based Control Techniques for a Positioning Actuator based on Magnetic Shape Memory Alloys

Cited by 4 publications

References 22 publications

Design, modelling and control of a micro-positioning actuator based on magnetic shape memory alloys

Design, modelling and control of a micro-positioning actuator based on magnetic shape memory alloys

Non-linear control of a hydraulic piezo-valve using a generalised Prandtl–Ishlinskii hysteresis model

A thermodynamically consistent lumped-element model for magnetic shape memory components

Contact Info

Product

Resources

About