TY - JOUR
AU - Stallkamp, J.
AB -  Shape memory alloys have great potential for use as an actuation material in miniaturized actuators for surgical instruments. Their performance and possible applications are discussed in this paper. A wire-based SMA actuFigure 1: Model structure ator was designed and a controller for the wire-length was designed and implemented. The closed loop performance and possibilities for optimization are also discussed in this density is the product of unit force and displacement. Depaper. spite their very small displacement, SMAs promise a work Keywords: shape memory alloy, actuation, miniaturization, density that is five times greater since their unit force is 30 work density, control times higher than its hydraulic equivalent. Due to their slow response speed, SMA actuators have a low power density. The slow response speed is caused by Introduction the cooling rate, which increases, as the actuator size is deWhen dealing with miniaturized actuation, Shape Memory creased. As the response speed of SMA actuators increases Alloys (SMAs) have unique characteristics, that make them with decreasing size and the work density is not influenced a very good choice for use as an actuation material. There- by size, their power density goes up with miniaturization. fore the use of SMA-wires for 
TI - Shape Memory Microactuator for Surgical Instruments
JF - Biomedical Engineering / Biomedizinische Technik
DO - 10.1515/bmt-2013-4398
DA - 2013-09-07
UR - https://www.deepdyve.com/lp/de-gruyter/shape-memory-microactuator-for-surgical-instruments-eXeKmBLHLE
DP - DeepDyve
ER -