Photoresponsive liquid crystal elastomers as feedback controlled light-driven actuators - Theory, real-time behaviour, limitations

Lippenberger M, Dengler P, Wandinger A, Schmidt M (2016)

Publication Type: Conference contribution

Publication year: 2016

Journal

Physics Procedia Elsevier BV

Publisher: Elsevier B.V.

Book Volume: 83

Pages Range: 1299-1307

Conference Proceedings Title: Physics Procedia

Event location: Furth DE

DOI: 10.1016/j.phpro.2016.08.137

Abstract

Liquid Crystal Elastomers constitute a class of intelligent materials and actuators. External stimulation induces an internal phase-change that results in a mechanical motion of the Liquid Crystal Elastomer. External stimuli can be humidity, thermal energy but also radiation with an appropriate wavelength. In this paper we use the photomechanic response of Liquid Crystal Elastomers as a driving force for a controlled actuator, operating in feedback constellation with a tuned cascade-compensator. To accomplish this, we go the methodical route of dynamic system investigation consisting of an analysis of the phenomenological system-properties, the identification of the dynamic behaviour and the overall synthesis of the feedback-control loop. Since we also take practical considerations into account, we present a coordinated hard- and software concept to realize the application of the Liquid Crystal Elastomer as a controlled actuator. An application guide complements the paper and discusses the limits of this class of actuators.

Authors with CRIS profile

Michael Lippenberger Lehrstuhl für Photonische Technologien Michael Schmidt Lehrstuhl für Photonische Technologien

Additional Organisation(s)

Lehrstuhl für Photonische Technologien

Involved external institutions

fiveTAU GmbH DE Germany (DE) Technische Hochschule Nürnberg "Georg Simon Ohm" DE Germany (DE)

How to cite

APA:

Lippenberger, M., Dengler, P., Wandinger, A., & Schmidt, M. (2016). Photoresponsive liquid crystal elastomers as feedback controlled light-driven actuators - Theory, real-time behaviour, limitations. In Physics Procedia (pp. 1299-1307). Furth, DE: Elsevier B.V..

MLA:

Lippenberger, Michael, et al. "Photoresponsive liquid crystal elastomers as feedback controlled light-driven actuators - Theory, real-time behaviour, limitations." Proceedings of the 9th International Conference on Photonic Technologies, LANE 2016, Furth Elsevier B.V., 2016. 1299-1307.

BibTeX: Download