Title :
Tiny silent linear cybernetic actuator driven by piezoelectric device with electromagnetic clamp
Author :
Ikuta, Koji ; Aritomi, Satoshi ; Kabashima, Takefumi
Author_Institution :
Dept. of Mech. Syst. Eng., Kyushu Inst. of Technol., Fukuoka, Japan
Abstract :
A type of miniature linear actuators called a cybernetic actuator for biomedical applications is described. This actuator has four driving states: free, increasing, decreasing, and lock. The free and lock states can release excessive applied load from outside to provide safety characteristics for both human and micromechanisms. Miniaturized linear cybernetic actuators combining a piezoelectric impact drive with electromagnetic clamping were designed and developed. Feasibility and basic performance of the actuators were confirmed by theory and experiments. Improved performance in terms of maximum speed, energy efficiency, and silent drive as a miniature linear actuator were verified successfully by using a controlled friction impact drive
Keywords :
biomedical equipment; electric actuators; electromagnets; piezoelectric motors; biomedical applications; controlled friction impact drive; driving states; electromagnetic clamp; electromagnetic clamping; energy efficiency; linear cybernetic actuator; maximum speed; miniature linear actuator; miniature linear actuators; performance; piezoelectric device; piezoelectric impact drive; silent drive; ultrasonic drive; Clamps; Cybernetics; Electromagnetic devices; Friction; Humans; Hydraulic actuators; Piezoelectric actuators; Piezoelectric devices; Safety; Service robots;
Conference_Titel :
Micro Electro Mechanical Systems, 1992, MEMS '92, Proceedings. An Investigation of Micro Structures, Sensors, Actuators, Machines and Robot. IEEE
Conference_Location :
Travemunde
Print_ISBN :
0-7803-0497-7
DOI :
10.1109/MEMSYS.1992.187723
