Papers by Author: Simona Noveanu

Abstract: The compliant mechanisms are mechanical devices which provide smooth and controlled motion guidance due to the deformation of some or all of the components. In this paper an original compliant minigripper is designed and analyzed. An experimental prototype of the compliant minigripper was developed. It is characterized by a compact design and easy connection to the piezoelectric actuator that amplifies the input displacement.

Abstract: The actuators based on shape memory alloys are described in the paper. It is shown that there is necessity to develop the actuators of compact design with amplified force. Research results of such actuators are presented.

Abstract: The first part of the paper treats the general problems concerning the shape memory alloy actuators and their operation principle. Then, our work referring to the developing a modular family of linear and rotational actuators, realized in many typo dimensions, in a compact design, with facile connection with the actuated mechanisms and supplying module is presented. The active elements of these actuators are shape memory alloy wires, ribbons and helical springs. The influence of the geometry of the active elements on the time response is studied. The most important solutions to reduce the resistive heating time of active elements and to improve the time response on cooling are identified.