Optimal design of micro-actuators based on SMA wires

This paper proposes a design-oriented thermomechanical model of SMA wires. This model describes at a macroscopic scale the deformation of SMA wires in function of parameters governing the phase transformation (temperature and stress). This model is experimentaly validated on one of the most popular manufactured products: Flexinol wires. An optimal design process for SMA-wire based micro-actuators is described and illustrated through a basic structure.

[1]  Paolo Dario,et al.  A miniature steerable end-effector for application in an integrated system for computer-assisted arthroscopy , 1997, Proceedings of International Conference on Robotics and Automation.

[2]  K. Tanaka.  A THERMOMECHANICAL SKETCH OF SHAPE MEMORY EFFECT: ONE-DIMENSIONAL TENSILE BEHAVIOR , 1986 .

[3]  K. Shimizu,et al.  Pseudoelasticity and shape memory effects in alloys , 1986 .

[4]  Guillaume Morel,et al.  A new inter-phalangeal actuator for dexterous micro-grippers , 1997, Proceedings of International Conference on Robotics and Automation.

[5]  Q. Chen,et al.  Active vibration control of elastic beam by means of shape memory alloy layers , 1996 .

[6]  Craig A. Rogers,et al.  One-Dimensional Thermomechanical Constitutive Relations for Shape Memory Materials , 1990 .

[7]  M. A. Northrup,et al.  Thin Film Shape Memory Alloy Microactuators , 1996, Microelectromechanical Systems (MEMS).

[8]  Ruben D. Spies,et al.  A Numerical Study of Parameter Sensitivities in Landau-Ginzburg Models of Phase Transitions in Shape Memory Alloys , 1994 .

[9]  M. Achenbach,et al.  A MODEL FOR SHAPE MEMORY , 1982 .

[10]  R. Andrew Russell,et al.  Improving the response of SMA actuators , 1995, Proceedings of 1995 IEEE International Conference on Robotics and Automation.

[11]  Craig A. Rogers,et al.  Design of Shape Memory Alloy Actuators , 1992 .

[12]  E. Talik,et al.  Resistivity investigations in the Gd1-xErxAl2 system , 1982 .

[13]  R. Andrew Russell,et al.  A novel differential shape memory alloy actuator for position control , 1995, Robotica.

[14]  Kazuhiro Kosuge,et al.  Micro active catheter system with multi degrees of freedom , 1994, Proceedings of the 1994 IEEE International Conference on Robotics and Automation.

[15]  L. Brinson.  One-Dimensional Constitutive Behavior of Shape Memory Alloys: Thermomechanical Derivation with Non-Constant Material Functions and Redefined Martensite Internal Variable , 1993 .

[16]  Paolo Dario,et al.  Control Experiments on two SMA based micro-actuators , 1997, ISER.

[17]  Vincent Hayward,et al.  Design of shape memory alloy actuator with high strain and variable structure control , 1995, Proceedings of 1995 IEEE International Conference on Robotics and Automation.