Title :
Design of a two degree-of-freedom, MRI-compatible actuator
Author :
Elbannan, K.M. ; Salisbury, Shaun P.
Author_Institution :
Dept. of Mech. & Mater. Eng., Univ. of Western Ontario, London, ON, Canada
fDate :
Aug. 28 2012-Sept. 1 2012
Abstract :
A novel compact piezoworm actuator for the MRI (Magnetic Resonance Imaging) environment is presented which is capable of both linear and rotary motion. The actuator will be fabricated from beryllium copper for minimal image distortion. Complementary clamps are integrated to minimize the number of drive channels and to act as a brake in case of a malfunction. Analysis was employed to optimize the selection of the piezostacks and flexures depending on their functional requirements. The device is targeting a maximum speed of 5 mm/s, a force thrust of 9 N and 5 rpm of rotational speed.
Keywords :
biomedical MRI; biomedical equipment; brakes; clamps; piezoelectric actuators; MRI environment; beryllium copper; brake; compact piezoworm actuator; complementary clamps; drive channels; flexures; force thrust; linear motion; magnetic resonance imaging; minimal image distortion; piezostacks; rotary motion; rotational speed; two degree-of-freedom MRI-compatible actuator; Actuators; Clamps; Force; Magnetic resonance imaging; Materials; Needles; Shafts; Humans; Magnetic Resonance Imaging;
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-4119-8
Electronic_ISBN :
1557-170X
DOI :
10.1109/EMBC.2012.6346087
