Bansevicius Ramutis, Janutenaite-Bogdaniene Jurate, Jurenas Vytautas, Kulvietis Genadijus, Mazeika Dalius, Drukteiniene Asta
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.
Micromachines (Basel). 2018 Nov 15;9(11):597. doi: 10.3390/mi9110597.
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.
对小型、低成本且高精度定位系统的需求与日俱增。因此，开展了该领域的研究，以探寻能够满足精确多自由度（DOF）定位系统技术要求的各种解决方案。本文提出了一种具有两个主动运动副的压电圆柱驱动器的新设计。这意味着单个驱动器用于产生振动，这些振动被转化为位于圆柱顶部的球体的旋转，同时确保压电圆柱在平面上的移动。已对压电圆柱进行了数值和实验研究。开发了接触力控制的数学模型，以解决转子根据特定运动轨迹需要旋转或移动时的定位问题。数值模拟包括对驱动器的谐波响应分析，以分析接触点运动轨迹。制造并测试了一个原型驱动器。获得的结果证实，这种装置适用于驱动器在平面内的定位和移动。
