Eventos Anais de eventos
CONEM 2018
X Congresso Nacional de Engenharia Mecânica
Shape memory alloy actuator: modeling improvements and position control using a temperature inner loop
Submission Author:
Thiago Barbosa , BA
Co-Authors:
Thiago Barbosa, Jés de Jesus Fiais Cerqueira, Antonio Marcus Nogueira Lima
Presenter: Thiago Barbosa
doi://10.26678/ABCM.CONEM2018.CON18-1166
Abstract
Shape Memory Alloy (SMA) actuators have interesting properties as high energy density, high compactness, silent operation, biocompatibility and strain self-sensing ability. These characteristics make SMA actuators suitable for a large range of applications (such as in biomedical, aerospace and automotive). This paper presents modeling improvements and new control approach for SMA actuators. The model presented takes into account the temperature influence in the SMA resistivity and this consideration lead to a more precise simulation model. A temperature inner loop control is used to improve the controller performance, and this strategy allows operation in higher frequencies. Simulations are conducted in order to evaluate the controller performance.
Keywords
Shape Memory Alloy, Smart Sensors and Actuators, Position and Temperature Control
