Next Article in Journal / Special Issue
The UC Softhand: Light Weight Adaptive Bionic Hand with a Compact Twisted String Actuation System
Previous Article in Journal / Special Issue
Hybrid Multi-Physics Modeling of an Ultra-Fast Electro-Mechanical Actuator
Article

What Is an Artificial Muscle? A Systemic Approach.

1
Institut National de Sciences Appliquées, University of Toulouse, Campus de Rangueil, 31077 Toulouse, France
2
LAAS/CNRS, 7 avenue du Colonel Roche, 31400 Toulouse, France
Academic Editor: Delbert Tesar
Actuators 2015, 4(4), 336-352; https://doi.org/10.3390/act4040336
Received: 24 October 2015 / Revised: 28 November 2015 / Accepted: 9 December 2015 / Published: 11 December 2015
(This article belongs to the Special Issue Feature Papers)
Artificial muscles define a large category of actuators we propose to analyze in a systemic framework by considering any artificial muscle as an open-loop stable system for any output which represents an artificial muscle dimension resulting from its “contraction”, understood in a broad meaning. This approach makes it possible to distinguish the artificial muscle from other actuators and to specify an original model for a linear artificial muscle, according to the theory of linear systems. Such a linear artificial muscle concept exhibits a constant stiffness independent on its control value. It is shown that a biomimetic actuator, made of two antagonist artificial muscles, requires that artificial muscle static characteristic, even in its most simplified form, is non-linear in the meaning of systems theory, to make possible the control of both actuator position and stiffness. However, we also attempt to show that a linear viscous damping can be a practical way for the dynamic behavior of the artificial muscle to be in relatively good accordance with the so-called Hill curve, interpreted as the dynamic characteristic linking the maximum contraction velocity of the artificial muscle to varying loads lifted against gravity. View Full-Text
Keywords: artificial muscle; biomimetic actuator; actuator classification artificial muscle; biomimetic actuator; actuator classification
Show Figures

Figure 1

MDPI and ACS Style

Tondu, B. What Is an Artificial Muscle? A Systemic Approach. Actuators 2015, 4, 336-352. https://doi.org/10.3390/act4040336

AMA Style

Tondu B. What Is an Artificial Muscle? A Systemic Approach. Actuators. 2015; 4(4):336-352. https://doi.org/10.3390/act4040336

Chicago/Turabian Style

Tondu, Bertrand. 2015. "What Is an Artificial Muscle? A Systemic Approach." Actuators 4, no. 4: 336-352. https://doi.org/10.3390/act4040336

Find Other Styles

Article Access Map by Country/Region

1
Back to TopTop