Online Estimation and Identification of Shape Memory Alloy-Actuated Flexible Structures Through Unscented Kalman Filtering

2010 ◽  
Vol 21 (16) ◽  
pp. 1589-1602 ◽  
Author(s):  
Arash Mohtat ◽  
Aghil Yousefi-Koma
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Kalman Filtering ◽  
Flexible Structures ◽  
Online Estimation

Robust Control of Flexible Structures Using Multiple Shape Memory Alloy Actuators

1994 ◽  
Vol 5 (5) ◽  
pp. 702-712 ◽  
Author(s):  
Robert Lashlee ◽  
Robert Butler ◽  
Vittal Rao ◽  
Frank Kern
Keyword(s):  
Robust Control ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Flexible Structures

scholarly journals Deflection Sliding Mode Control of a Flexible Bar Using a Shape Memory Alloy Actuator with an Uncertainty Model

2020 ◽  
Vol 10 (2) ◽  
pp. 471
Author(s):  
Najmeh Keshtkar ◽  
Sajjad Keshtkar ◽  
Alexander Poznyak
Keyword(s):  
Shape Memory Alloy ◽  
Sliding Mode Control ◽  
Shape Memory ◽  
Sliding Mode ◽  
Flexible Structures ◽  
Flexible System ◽  
Mode Control ◽  
Uncertainty Model ◽  
Rigid Rods ◽  
The One

This paper presents a penalty-based sliding mode control (SMC) law for flexible bar system, which uses shape memory alloy (SMA) as actuator. SMA actuators are lightweight, compact and flexible which facilitate their integration into flexible structures. The proposed control law manipulates SMA current to exert the necessary force for deflecting the flexible bar into the desired state. Numerical simulations demonstrate that this new method can control the one-input, multi-output under-actuated system of the flexible bar efficiently. The mathematical model of the flexible system is obtained using physical discretization. The bar is modeled as a combination of rigid rods connected by joints without elasticity and friction. This model demonstrates the flexibility of the system in an effective way. The numerical simulation illustrates the feasibility of the proposed model for analyzing the oscillations of the system and the effectivness of proposed control algorithms.

Control of Slewing Motions of Flexible Structures Using Shape Memory Alloy

2014 ◽  
Author(s):  
Frederic C. Janzen ◽  
Ângelo M. Tusset ◽  
Vinicius Piccirillo ◽  
José M. Balthazar ◽  
Bento R. de Pontes ◽  
...  
Keyword(s):  
Optimal Control ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Vibration Control ◽  
Control Strategy ◽  
Local Stability ◽  
Flexible Structures ◽  
Dc Motor ◽  
Flexible Structure ◽  
State Dependent

This paper presents the position and vibration control of a single flexible slewing structure driven by a DC motor at the slewing axis. The position is controlled over the current applied to the DC motor armature. To control the vibration of the flexible structure Shape Memory Alloys (SMA) are applied to them. The control is made through the State Dependent Ricatti Equations (SDRE) technique which uses sub-optimal control and system local stability search. Numerical simulations and experimental results are presented which demonstrate the effectiveness of the proposed control strategy.

Structure and mobility of martensite variant interfaces in a Cu-Zn-AI shape memory alloy

2003 ◽  
Vol 112 ◽  
pp. 519-522 ◽  
Author(s):  
W. Cai ◽  
J. X. Zhang ◽  
Y. F. Zheng ◽  
L. C. Zhao
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Martensite Variant

Analysis of the effect of Heat Treatments in the manufacturing process of Shape Memory Alloy Springs

2017 ◽  
Author(s):  
Ricardo Alexandre Amar de Aguiar ◽  
Pedro Manuel Calas Lopes Pacheco ◽  
Brenno Tavares Duarte
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Manufacturing Process ◽  
Heat Treatments
Sign in / Sign up

Export Citation Format

Share Document