Journal
IEEE TRANSACTIONS ON MAGNETICS
Volume 39, Issue 5, Pages 2965-2967Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2003.816708
Keywords
nanoscale actuators; permanent magnets; piezoelectric devices
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Piezoelectric actuators must be preloaded to prevent damage due to tensile loading. Spring-preloaded actuators sacrifice some of the total stroke of the actuator. The authors propose,a preload device using permanent magnets. By employing magnetic preload, the static performance of the actuator is improved, while increasing the total stroke. The proposed preload device decouples the lateral motion of the actuator from the actuating direction, thus eliminating the need for a complex flexure hinge mechanism.
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