modeling of a new sma microactuator for active endoscopy applications论文.pdf
MODELING OF A NEW SMA MICROACTUATOR FOR ACTIVE ENDOSCOPY APPLICATIONS J. Abadie ∗ N. Chaillet ∗ C. Lexcellent ∗∗ ∗ Laboratoire d’Automatique de Besan¸conUMR CNRS 6596 - ENSMM - Universit´ede Franche-Comt´e,France ∗∗ FEMTO-ST Laboratoire de M´ecanique Appliqu´eeR. Chal´eatUMR CNRS 6174 - ENSMM - Universit´ede Franche-Comt´e,France Abstract: Shape Memory Alloys (SMA) are good candidates to actuate endoscope heads but the cooling problem must be solved particularly in confined situations. For these reasons, a new SMA microactuator specially designed for active en- doscopy applications has been developed in our laboratory. This work is a new step in the approach of using integrated thermoelectric cooling with SMA actuators. In fact, the Peltier effect is very attractive in such a case because this reversible phenomenon reduces the overheating of the external environment and provides forced cooling that decreases the response time. In this paper the actuator design and its working principle are presented. A fine modeling of the coupled m
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