The multidimensional motion ultrasonic motor with a single spherical stator is studied in this paper. It has the characteristics of miniaturization and can be used in precision motion applications. By bonding six identical pieces of piezoelectric ceramic onto the stator and applying the voltage signal of high frequency, the deformation of the inverse piezoelectric effect is used to excite the stator yaw vibration mode. The orthogonal superposition of the modes of the spherical stator on the driving foot produces elliptical trajectory around X, Y, and Z directions by different excitation methods. According to the yaw vibration mode of the spherical stator, 12 driving feet are designed to drive the rotation of the spherical rotor. The structure and mechanical characteristics of the motor are simulated by using simulation software, and the transient response of the stator driving foot was obtained, which proved its feasibility. Finally, the output performance of the motor in actual operation is given through experiments, which provides a new reference scheme in the field of precise multi-degree-of-freedom motion. At a voltage of 100 V and a frequency of 26.7 kHz, the prototype has a no-load speed of 73, 70, and 114 rpm around X, Y, and Z axes, respectively.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1063/5.0074049 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Model and Property Analysis for a Ball-Hinged Three-Degree-of-Freedom Piezoelectric Spherical Motor.
Sensors (Basel)
February 2024
School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
Multi-degree-of-freedom piezoelectric motors have the advantages of high torque and resolution, simple structure, and direct drive, which are widely used in robot wrist joints, deep-sea mechanisms, medical equipment, and space mechanisms. To solve the problems of high force/torque coupling degree and ball low stator and rotor bonding strength of the traditional traveling wave type three-degree-of-freedom piezoelectric spherical motor, a new structure of ball-hinged piezoelectric spherical motor is proposed. Through coordinate transformation and force analysis, the driven mathematical model of the spherical motor is given.
View Article and Find Full Text PDFLow Profile Triangle-Shaped Piezoelectric Rotary Motor.
Micromachines (Basel)
January 2024
Department of Information Systems, Faculty of Fundamental Sciences, Vilnius Gediminas Technical University, Saulėtekio Avn., 11, 10223 Vilnius, Lithuania.
In this paper, we present research on a novel low-profile piezoelectric rotary motor with a triangle-shaped stator. The stator of the motor comprises three interconnected piezoelectric bimorph plates forming an equilateral triangle. Bimorph plates consist of a passive layer fabricated from stainless steel and four piezo ceramic plates glued to the upper and lower surfaces.
View Article and Find Full Text PDFMolecular rotators anchored on a rod-like anionic coordination polymer adhered by charge-assisted hydrogen bonds.
Phys Chem Chem Phys
January 2024
College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China.
Article Synopsis
- Researchers used various advanced techniques like X-ray diffraction and nuclear magnetic resonance to study a new crystalline structure called (i-PrNHMe)[CdBr].
- In this model, the (i-PrNHMe) cation is a flexible near-spherical rotator, while the {[CdBr]} polymer acts as a rigid stator.
- The connection between these two components is achieved through charge-assisted hydrogen bonds, enabling the unique rotor-stator mechanism.
Cryogenic-compatible spherical rotors and stators for magic angle spinning dynamic nuclear polarization.
Magn Reson (Gott)
September 2023
Department of Chemistry and Applied Biochemistry, ETH Zürich, Zurich 8093, Switzerland.
Cryogenic magic angle spinning (MAS) is a standard technique utilized for dynamic nuclear polarization (DNP) in solid-state nuclear magnetic resonance (NMR). Here we describe the optimization and implementation of a stator for cryogenic MAS with 9.5 mm diameter spherical rotors, allowing for DNP experiments on large sample volumes.
View Article and Find Full Text PDFIn situ extraction/encapsulation of olive leaves antioxidants in zein for improved oxidative stability of edible oils.
Food Res Int
November 2023
Post-Graduation Program of Food Technology (PPGTA), Federal University of Technology - Paraná - UTFPR, Campo Mourão, via Rosalina Maria dos Santos, 1233, CEP 87301-899, Campo Mourão, PR, Brazil; Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal. Electronic address:
This study presents a sustainable and cost-effective method for preserving the bioactivity of phenolic compounds in olive leaves (OLE) during their application. The extraction and nanoencapsulation of OLE were performed in a single-step process using a rotor-stator system with zein as the encapsulating agent. The nanoprecipitation step was carried out using an aqueous sodium caseinate solution, resulting in spherical particles with an average diameter of about 640 nm, as confirmed by Transmission Electron Microscopy.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!