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research-article

Lyapunov Control Strategy for Thermoelectric Cooler Activating an Ice-Clamping System

[+] Author and Article Information
Alexandra Mironova

Institute of Product and Process Innovation, Leuphana University of Lueneburg, Germany, Lueneburg 21339
mironova@leuphana.de

Paolo Mercorelli

Institute of Product and Process Innovation, Leuphana University of Lueneburg, Germany, Lueneburg 21339
mercorelli@leuphana.de

Andreas Zedler

Institute of Product and Process Innovation, Leuphana University of Lueneburg, Germany, Lueneburg 21339
zedler@leuphana.de

1Corresponding author.

ASME doi:10.1115/1.4040135 History: Received October 30, 2017; Revised April 05, 2018

Abstract

Deformation-free clamping plays an important role in manufacturing systems towards zero-defect production. The fixture of workpieces during machining processes poses challenges not only for micro parts, but also for thin-walled pieces or freeform surfaces in the macro manufacturing. For this purpose, a new non-traditional adhesive technique, using frozen water to clamp, is introduced in this paper. By increasing the cooling power and thus decreasing the low temperature, higher clamping and holding forces and, therefore, a safer clamping system during machining process can be achieved. The objective of this investigation is to ensure a stable low temperature and to compensate thermal disturbances. Thanks to their structural robustness, Lyapunov based control strategies demonstrate an appropriate capability to achieve these results in real industrial applications. Model design as well as simulation and experimental results are shown and discussed.

Copyright (c) 2018 by ASME
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