Elimination of thermal instability in precise positioning of Galfenol actuators

Mojtaba Ghodsi; Khurshid  Alama; Hamidreza  Hoshyarmanesh; Mohammad Reza Sheykholeslami

doi:10.1117/12.2222990

Elimination of thermal instability in precise positioning of Galfenol actuators

Mojtaba Ghodsi^*, Khurshid Alama, Hamidreza Hoshyarmanesh, Mohammad Reza Sheykholeslami

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Abstract

This paper presents a new method to eliminate deviation in positioning caused by coil’s heat generation in magnetostrictive actuators. The advantages of the proposed system are compactness, high controllability and high reliability. The actuator package consists of Galfenol as active element and a magnification mechanism combined with a Peltier element or thermoelectric cooler (TEC). By using the temperature sensor, a thermoelectric cooler (TEC) is activated to reduce the temperature of the coil. However, the reduction of temperature by TEC alone is not enough to eliminate the error and controlling of applied voltage is also required. A simple PI controller for coil’s current is combined with TEC and by reducing the temperature and current simultaneously, the positioning error is vanished completely.

Original language	English
Title of host publication	Behavior and Mechanics of Multifunctional Materials and Composites 2016
Subtitle of host publication	Proceedings of SPIE
Editors	Nakhiah C. Goulbourne
Publisher	SPIE Press
Number of pages	9
ISBN (Print)	9781510600416
DOIs	https://doi.org/10.1117/12.2222990
Publication status	Published - 18 Apr 2016
Event	SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring - Las Vegas, United States Duration: 20 Mar 2016 → 24 Mar 2016

Publication series

Name	Proceedings of SPIE
Publisher	SPIE
Volume	9800
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring
Country/Territory	United States
City	Las Vegas
Period	20/03/16 → 24/03/16

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10.1117/12.2222990

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Copyright (2016) Society of Photo‑Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited.
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Ghodsi, M., Alama, K., Hoshyarmanesh, H., & Sheykholeslami, M. R. (2016). Elimination of thermal instability in precise positioning of Galfenol actuators. In N. C. Goulbourne (Ed.), Behavior and Mechanics of Multifunctional Materials and Composites 2016: Proceedings of SPIE Article 980008 (Proceedings of SPIE; Vol. 9800). SPIE Press. https://doi.org/10.1117/12.2222990

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title = "Elimination of thermal instability in precise positioning of Galfenol actuators",

abstract = "This paper presents a new method to eliminate deviation in positioning caused by coil{\textquoteright}s heat generation in magnetostrictive actuators. The advantages of the proposed system are compactness, high controllability and high reliability. The actuator package consists of Galfenol as active element and a magnification mechanism combined with a Peltier element or thermoelectric cooler (TEC). By using the temperature sensor, a thermoelectric cooler (TEC) is activated to reduce the temperature of the coil. However, the reduction of temperature by TEC alone is not enough to eliminate the error and controlling of applied voltage is also required. A simple PI controller for coil{\textquoteright}s current is combined with TEC and by reducing the temperature and current simultaneously, the positioning error is vanished completely.",

author = "Mojtaba Ghodsi and Khurshid Alama and Hamidreza Hoshyarmanesh and Sheykholeslami, {Mohammad Reza}",

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Ghodsi, M, Alama, K, Hoshyarmanesh, H & Sheykholeslami, MR 2016, Elimination of thermal instability in precise positioning of Galfenol actuators. in NC Goulbourne (ed.), Behavior and Mechanics of Multifunctional Materials and Composites 2016: Proceedings of SPIE., 980008, Proceedings of SPIE, vol. 9800, SPIE Press, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, Las Vegas, Nevada, United States, 20/03/16. https://doi.org/10.1117/12.2222990

Elimination of thermal instability in precise positioning of Galfenol actuators. / Ghodsi, Mojtaba; Alama, Khurshid ; Hoshyarmanesh, Hamidreza et al.
Behavior and Mechanics of Multifunctional Materials and Composites 2016: Proceedings of SPIE. ed. / Nakhiah C. Goulbourne. SPIE Press, 2016. 980008 (Proceedings of SPIE; Vol. 9800).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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N2 - This paper presents a new method to eliminate deviation in positioning caused by coil’s heat generation in magnetostrictive actuators. The advantages of the proposed system are compactness, high controllability and high reliability. The actuator package consists of Galfenol as active element and a magnification mechanism combined with a Peltier element or thermoelectric cooler (TEC). By using the temperature sensor, a thermoelectric cooler (TEC) is activated to reduce the temperature of the coil. However, the reduction of temperature by TEC alone is not enough to eliminate the error and controlling of applied voltage is also required. A simple PI controller for coil’s current is combined with TEC and by reducing the temperature and current simultaneously, the positioning error is vanished completely.

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Elimination of thermal instability in precise positioning of Galfenol actuators

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