Title :
Fast reversible NiTi fibers for use in microrobotics
Author :
Hunter, Ian W. ; Lafontaine, Serge ; Hollerbach, John M. ; Hunter, Peter J.
Author_Institution :
Dept. of Biomed. Eng., McGill Univ., Montreal, Que., Canada
fDate :
30 Jan-2 Feb 1991
Abstract :
The authors report the experimentally determined characteristics of NiTi fibers which have been modified using a preparation procedure in which the fibers were subjected to brief very large current pulses during forced stretching. The modified fibers contract and relax fast enough to be of use in microrobotics. The modified fibers generate a maximum extrapolated stress of 230 MN/m2 and yield a peak measured power/mass approaching 50 kW/kg. The theory of a micro-actuator incorporating the modified fibers is presented
Keywords :
energy storage devices; fibres; micromechanical devices; nickel compounds; robots; shape memory effects; extrapolated stress of 230 MN/m2; fast contracting fibers; forced stretching; large current pulses; micro-actuator; microrobotics; modified fibers; power/mass ratio; preparation; reversible NiTi fibers; Bandwidth; Capacitive sensors; Clamps; Cooling; Force control; Optical fiber theory; Robots; Stress; Transducers; Transistors;
Conference_Titel :
Micro Electro Mechanical Systems, 1991, MEMS '91, Proceedings. An Investigation of Micro Structures, Sensors, Actuators, Machines and Robots. IEEE
Conference_Location :
Nara
Print_ISBN :
0-87942-641-1
DOI :
10.1109/MEMSYS.1991.114789
