Dynamic fast terminal sliding mode control of a shape memory alloy actuated system

Meeshawn S. Marathe; S. M. Srinivasan

doi:10.1117/12.2229885

15 April 2016 Dynamic fast terminal sliding mode control of a shape memory alloy actuated system

Proceedings Volume 9799, Active and Passive Smart Structures and Integrated Systems 2016; 97993R (2016) https://doi.org/10.1117/12.2229885
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2016, Las Vegas, Nevada, United States

Abstract

In this paper we address the chattering phenomenon which is a common drawback associated with the normal Sliding Mode Control (SMC) law for a basic shape memory alloy (SMA) actuated system. A new method has been proposed to counter this effect by combining the concepts of Fast Terminal SMC and Dynamic controller. A phenomenological model is developed for the SMA which incorporates a piecewise linear hysteresis behavior. This model is used for both open loop as well as closed loop simulations for a linear motion control system. Based on this model, a dynamic terminal sliding mode control law is derived and applied to the system. A normal SMC law with saturation function which is known to reduce chattering is compared with the proposed control law for its effectiveness to curb the issue of chattering versus its ability to faithfully track a desired trajectory. Numerical Simulations indicate that the proposed law is able to reduce the chattering effect sufficiently and at par with the control technique involving saturation function.

Citation Download Citation

Meeshawn S. Marathe and S. M. Srinivasan "Dynamic fast terminal sliding mode control of a shape memory alloy actuated system", Proc. SPIE 9799, Active and Passive Smart Structures and Integrated Systems 2016, 97993R (15 April 2016); https://doi.org/10.1117/12.2229885

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available