Comparison of solid state actuators based on power and energy criteria

Victor Giurgiutiu; Craig A. Rogers

doi:10.1117/12.239032

1 May 1996 Comparison of solid state actuators based on power and energy criteria

Victor Giurgiutiu, Craig A. Rogers

Proceedings Volume 2717, Smart Structures and Materials 1996: Smart Structures and Integrated Systems; (1996) https://doi.org/10.1117/12.239032
Event: 1996 Symposium on Smart Structures and Materials, 1996, San Diego, CA, United States

Abstract

A study of published literature and vendor information about solid-state induced-strain actuators has been undertaken to establish their dynamic-operation mechanical and electrical characteristics, and to compare their output power and energy density criteria. A theory was developed from first principles to predict the input and output power and energy amplitudes under dynamic operation including the piezo-electric counter electro-motive force and the bias- voltage effects. The effective electro-mechanical coupling coefficient, k, for an assembled active-material stack was calculated from vendor data using a remarkably simple formula. Values between 0.45 and 1.038 were found, somehow in disagreement with the generally accepted value of 0.7 for the basic material. Dynamic energy output at the optimal stiffness match condition was found to have values of up to 0.260 J for some off-the-shelf actuators. Dynamic energy density per unit volume and unit mass varied in the range 0.5 - 3.7 J/dm³ and 0.058 - 0.482 J/kg, respectively. Conversion efficiency between input electrical power and output mechanical power was found to vary widely in the range 3.74% - 32.39%. This paper presents, with priority, two remarkably simple formulae: one for calculating the effective electro-mechanical coupling coefficient, K, using standard vendor data; the other for estimating the peak reactive power for bias-voltage operation of the actuator.

Citation Download Citation

Victor Giurgiutiu and Craig A. Rogers "Comparison of solid state actuators based on power and energy criteria", Proc. SPIE 2717, Smart Structures and Materials 1996: Smart Structures and Integrated Systems, (1 May 1996); https://doi.org/10.1117/12.239032

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