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Open AccessArticle

Single Cylinder-Type Piezoelectric Actuator with Two Active Kinematic Pairs

Institute of Mechatronics, Kaunas University of Technology, K. Donelaicio st. 73, LT-44249 Kaunas, Lithuania
Department of Information Systems, Vilnius Gediminas Technical University, Sauletekio al. 11, LT-10223 Vilnius, Lithuania
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Micromachines 2018, 9(11), 597;
Received: 27 September 2018 / Revised: 23 October 2018 / Accepted: 2 November 2018 / Published: 15 November 2018
(This article belongs to the Special Issue Piezoelectric Transducers: Materials, Devices and Applications)
There is an ever-increasing demand for small-size, low-cost, and high-precision positioning systems. Therefore, investigation in this field is performed to search for various solutions that can meet technical requirements of precise multi-degree-of-freedom (DOF) positioning systems. This paper presents a new design of a piezoelectric cylindrical actuator with two active kinematic pairs. This means that a single actuator is used to create vibrations that are transformed into the rotation of the sphere located on the top of the cylinder and at the same time ensure movement of the piezoelectric cylinder on the plane. Numerical and experimental investigations of the piezoelectric cylinder have been performed. A mathematical model of contacting force control was developed to solve the problem of positioning of the rotor when it needs to be rotated or moved according to a specific motion trajectory. The numerical simulation included harmonic response analysis of the actuator to analyze the trajectories of the contact points motion. A prototype actuator has been manufactured and tested. Obtained results confirmed that such a device is suitable for both positioning and movement of the actuator in the plane. View Full-Text
Keywords: piezoelectric actuators; positioning; trajectory control; numerical analysis; trajectory planning piezoelectric actuators; positioning; trajectory control; numerical analysis; trajectory planning
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Bansevicius, R.; Janutenaite-Bogdaniene, J.; Jurenas, V.; Kulvietis, G.; Mazeika, D.; Drukteiniene, A. Single Cylinder-Type Piezoelectric Actuator with Two Active Kinematic Pairs. Micromachines 2018, 9, 597.

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