This page has only limited features, please log in for full access.
This paper presents a disc-type ultrasonic piezoelectric motor, which is designed for micro flying vehicles. It provides a high output rotation speed under low operating voltage, compared with common piezoelectric devices, by employing a “contact teeth” wave transmission structure. The ultrasonic motor (USM) consists of a trimorph disc stator, with triple internal contact teeth, a shaft and two hemispheric hard-wearing rotors. The operating principle of the USM is based on the superposition of the in-plane B03 vibration mode of the trimorph disc, and the first longitudinal vibration of the contact teeth. An optimization method of the stator structure parameters was proposed and validated by numerical modeling. The diameter and thickness of the stator are 20 mm and 1 mm, respectively. A prototype with the weight of 2 g was made for this experimental test. The optimal frequency of the excitation signal and the preload force are 98.5 kHz and 0.5 N, respectively. The minimum operating voltage was tested under 7.5 V and reached the speed of 225 rpm, and the maximum unloaded rotational speed of the USM reached 5172 rpm when 30 V driving voltage was applied. The maximum lifting force generated by this USM was measured as 46.1 mN, which is 2.35 times bigger than its weight.
Jianmin Qiu; Ying Yang; Xin Hong; Piotr Vasiljev; Dalius Mazeika; Sergejus Borodinas. A Disc-Type High Speed Rotary Ultrasonic Motor with Internal Contact Teeth. Applied Sciences 2021, 11, 2386 .
AMA StyleJianmin Qiu, Ying Yang, Xin Hong, Piotr Vasiljev, Dalius Mazeika, Sergejus Borodinas. A Disc-Type High Speed Rotary Ultrasonic Motor with Internal Contact Teeth. Applied Sciences. 2021; 11 (5):2386.
Chicago/Turabian StyleJianmin Qiu; Ying Yang; Xin Hong; Piotr Vasiljev; Dalius Mazeika; Sergejus Borodinas. 2021. "A Disc-Type High Speed Rotary Ultrasonic Motor with Internal Contact Teeth." Applied Sciences 11, no. 5: 2386.
Climatic conditions, such as hail, strongly affect the efficiency of photovoltaic (PV) modules. The aim of this paper is to present comprehensive analytical and experimental research results and to evaluate the impact of hail on PV modules. The experimental study was conducted using a new approach in hail simulation testing the impact on PV modules. The impact of hail was compared using mechanical parameters, which were in turn reflected by electric power produced by a PV module. Based on both simulation and experimental results, optimization guidelines were proposed to improve mechanical resistance of PV modules. The scientific novelty of the article is the optimization of the theoretical model of the PV element based on experimental data. Mechanical impact parameters in PV modules, such as force transmission and final stress, decreased from 236 kN/m2 to 109.8 kN/m2 during the optimization process (geometry packages to obtain the lowest stresses).
Vytautas Makarskas; Mindaugas Jurevičius; Janis Zakis; Artūras Kilikevičius; Sergejus Borodinas; Jonas Matijošius; Kristina Kilikevičienė. Investigation of the influence of hail mechanical impact parameters on photovoltaic modules. Engineering Failure Analysis 2021, 124, 105309 .
AMA StyleVytautas Makarskas, Mindaugas Jurevičius, Janis Zakis, Artūras Kilikevičius, Sergejus Borodinas, Jonas Matijošius, Kristina Kilikevičienė. Investigation of the influence of hail mechanical impact parameters on photovoltaic modules. Engineering Failure Analysis. 2021; 124 ():105309.
Chicago/Turabian StyleVytautas Makarskas; Mindaugas Jurevičius; Janis Zakis; Artūras Kilikevičius; Sergejus Borodinas; Jonas Matijošius; Kristina Kilikevičienė. 2021. "Investigation of the influence of hail mechanical impact parameters on photovoltaic modules." Engineering Failure Analysis 124, no. : 105309.
Smoothness of tape movement and stability of the tape area where elements are generated are very important in precision mechatronic devices where precise elements are generated on a steel tape, controlling them in real time. During movement, deformations and vibrations form in the steel tape area where elements are generated as a result of imperfections of movement equipment, contact between the roller surface and the tape, and errors arising in the movement process. This article is based on the need for a detailed theoretical and experimental research of the effects occurring during the movement of the precision steel tape used in measuring systems with precision elements generated on the tape, including an investigation of the roller-tape contact. The article also aims to develop a model of the system for measuring the displacement of the tape in a raster formation device, to investigate and assess possible effects of external and internal factors on steel tape parameters. The article presents experimental research conducted for determining dynamic variables forming during the movement of a steel tape, assessing the factors that may cause raster generation errors in dynamic mode.
Antanas Fursenko; Artūras Kilikevičius; Kristina Kilikevičienė; Sergejus Borodinas; Albinas Kasparaitis; Jonas Matijošius. Investigation of Roller-Tape Contact Pair Used in Precision Mechatronic System. Applied Sciences 2020, 10, 4041 .
AMA StyleAntanas Fursenko, Artūras Kilikevičius, Kristina Kilikevičienė, Sergejus Borodinas, Albinas Kasparaitis, Jonas Matijošius. Investigation of Roller-Tape Contact Pair Used in Precision Mechatronic System. Applied Sciences. 2020; 10 (11):4041.
Chicago/Turabian StyleAntanas Fursenko; Artūras Kilikevičius; Kristina Kilikevičienė; Sergejus Borodinas; Albinas Kasparaitis; Jonas Matijošius. 2020. "Investigation of Roller-Tape Contact Pair Used in Precision Mechatronic System." Applied Sciences 10, no. 11: 4041.
Optical encoders are widely used in applications requiring precise displacement measurement and fluent motion control. To reach high positioning accuracy and repeatability, and to create a more stable speed-control loop, essential attention must be directed to the subdivisional error (SDE) of the used encoder. This error influences the interpolation process and restricts the ability to achieve a high resolution. The SDE could be caused by various factors, such as the particular design of the reading head and the optical scanning principle, quality of the measuring scale, any kind of relative orientation changes between the optical components caused by mechanical vibrations or deformations, or scanning speed. If the distorted analog signals are not corrected before interpolation, it is very important to know the limitations of the used encoder. The methodology described in this paper could be used to determine the magnitude of an SDE and its trend. This method is based on a constant-speed test and does not require high-accuracy reference. The performed experimental investigation of the standard optical linear encoder SDE under different scanning speeds revealed the linear relationship between the tested encoder’s traversing velocity and the error value. A more detailed investigation of the obtained results was done on the basis of fast Fourier transformation (FFT) to understand the physical nature of the SDE, and to consider how to improve the performance of the encoder.
Donatas Gurauskis; Artūras Kilikevičius; Sergejus Borodinas. Experimental Investigation of Linear Encoder’s Subdivisional Errors under Different Scanning Speeds. Applied Sciences 2020, 10, 1766 .
AMA StyleDonatas Gurauskis, Artūras Kilikevičius, Sergejus Borodinas. Experimental Investigation of Linear Encoder’s Subdivisional Errors under Different Scanning Speeds. Applied Sciences. 2020; 10 (5):1766.
Chicago/Turabian StyleDonatas Gurauskis; Artūras Kilikevičius; Sergejus Borodinas. 2020. "Experimental Investigation of Linear Encoder’s Subdivisional Errors under Different Scanning Speeds." Applied Sciences 10, no. 5: 1766.
In this paper, a mathematical model for projectiles shooting in any direction based on sensors distributed stereoscopically is put forward. It is based on the characteristics of a shock wave around a supersonic projectile and acoustical localization. Wave equations for an acoustic monopole point source of a directed effect used for physical interpretation of pressure as an acoustic phenomenon. Simulation and measurements of novel versatile mechanical and acoustical damping system (silencer), which has both a muzzle break and silencer properties studied in this paper. The use of the proposed damping system can have great influence on the acoustic pressure field intensity from the shooter. A silencer regarded as an acoustic transducer and multi-holes waveguide with a chamber. Wave equations for an acoustic monopole point source of a directed effect used for the physical interpretation of pressure as an acoustic phenomenon. The numerical simulation results of the silencer with different configurations presented allow trends to be established. A measurement chain was used to compare the simulation results with the experimental ones. The modeling and experimental results showed an increase in silencer chamber volume results in a reduction of recorded pressure within the silencer chamber.
Jaroslaw Selech; Artūras Kilikevičius; Kristina Kilikevičienė; Sergejus Borodinas; Jonas Matijošius; Darius Vainorius; Jacek Marcinkiewicz; Zaneta Staszak. Force and Sound Pressure Sensors Used for Modeling the Impact of the Firearm with a Suppressor. Applied Sciences 2020, 10, 961 .
AMA StyleJaroslaw Selech, Artūras Kilikevičius, Kristina Kilikevičienė, Sergejus Borodinas, Jonas Matijošius, Darius Vainorius, Jacek Marcinkiewicz, Zaneta Staszak. Force and Sound Pressure Sensors Used for Modeling the Impact of the Firearm with a Suppressor. Applied Sciences. 2020; 10 (3):961.
Chicago/Turabian StyleJaroslaw Selech; Artūras Kilikevičius; Kristina Kilikevičienė; Sergejus Borodinas; Jonas Matijošius; Darius Vainorius; Jacek Marcinkiewicz; Zaneta Staszak. 2020. "Force and Sound Pressure Sensors Used for Modeling the Impact of the Firearm with a Suppressor." Applied Sciences 10, no. 3: 961.
Thermal errors that cause temperature deformations is one of the main factors that influence the accuracy of precision machines. Displacement measuring systems are used in robotics, precision machine tools and other technological equipment, where exist abundant heat sources. The accuracy of linear encoder is affected by both: thermal sources and the changing external ambient temperature. Therefore, thermo-elastic deformations occurring due to the changes in the ambient temperature is an important factor that should be estimated in the process of machine operation. This article presents a study on the thermal errors of optical linear encoder. Compensation of thermal errors is considered a more convenient, effective and economical way in comparison to the ways of thermal error handling and reduction. On the basis of analytic calculations, digital FEM analysis and experimental research, the models of thermal errors that are used for the real-time compensation are determined. The methodology of thermal error compensation, which could be easily realized in a linear encoder itself is presented in the article.
Donatas Gurauskis; Arturas Kilikevičius; Sergejus Borodinas; Albinas Kasparaitis. Analysis of geometric and thermal errors of linear encoder for real-time compensation. Sensors and Actuators A: Physical 2019, 296, 145 -154.
AMA StyleDonatas Gurauskis, Arturas Kilikevičius, Sergejus Borodinas, Albinas Kasparaitis. Analysis of geometric and thermal errors of linear encoder for real-time compensation. Sensors and Actuators A: Physical. 2019; 296 ():145-154.
Chicago/Turabian StyleDonatas Gurauskis; Arturas Kilikevičius; Sergejus Borodinas; Albinas Kasparaitis. 2019. "Analysis of geometric and thermal errors of linear encoder for real-time compensation." Sensors and Actuators A: Physical 296, no. : 145-154.
This paper describes the design, optimization and experimental results of piezoelectric motor that uses the radial mode of excitation of the double rings stator. The main goal of the proposed design is to increase motor performance using d33 ceramic polarization working in the radial mode. The proposed motor can be driven by a simple harmonic signal and used for standard piezoceramic rings. The stator consists of four parts: metal ring, Alumina (Al2O3) ring and double piezoceramic rings. The design is optimized for laser cutting machine and is cost effective for manufacturing. The main application field of the proposed motor is micro-air vehicles (μAV). The finite element method (FEM) was used to define the structural and electrical boundary condition for the symmetrical coplanar trimorph piezoelectric actuator. The results of the numerical calculations after geometry optimization, some experimental results and mechanical properties of the ultrasonic motor are presented in this paper as well.
Sergejus Borodinas; Piotr Vasiljev; Dalius Mazeika; Regimantas Bareikis; Ying Yang. Design optimization of double ring rotary type ultrasonic motor. Sensors and Actuators A: Physical 2019, 293, 160 -166.
AMA StyleSergejus Borodinas, Piotr Vasiljev, Dalius Mazeika, Regimantas Bareikis, Ying Yang. Design optimization of double ring rotary type ultrasonic motor. Sensors and Actuators A: Physical. 2019; 293 ():160-166.
Chicago/Turabian StyleSergejus Borodinas; Piotr Vasiljev; Dalius Mazeika; Regimantas Bareikis; Ying Yang. 2019. "Design optimization of double ring rotary type ultrasonic motor." Sensors and Actuators A: Physical 293, no. : 160-166.
The paper presents results of numerical and experimental investigations of a new design piezoelectric energy harvester based on a saw-tooth type cantilever array. The proposed energy harvester has multi-modal operation principle and allows to harvest mechanical vibrations energy in narrow frequency range. Moreover, the multi-modal operation principle of the harvester enable summation of bending strains of several cantilevers and allows to improve efficiency of the harvester. The proposed multi-modal energy harvester consist of four cantilevers that are connected rigidly to each other at 30° angles. Cross-sections of the cantilevers were modified by cylindrical gaps in order to increase bending strain. Seismic masses were placed at each corner of the harvester in order to reduce values of natural frequencies and to create additional rotation moment. Numerical investigation revealed that the energy harvester has five resonance frequencies in the range from 20 Hz to 135 Hz. The numerical investigation of electrical characteristics showed that voltage density of 48.39mV/mm3 and energy density of 61.25μJ/mm3 was obtained. Experimental investigations confirmed the results of numerical investigation and showed that voltage and energy densities reached 55.65mV/mm3and 52.56μJ/mm3, respectively.
Dalius Mažeika; Andrius Čeponis; Piotr Vasiljev; Sergejus Borodinas; Birutė Pliuskuvienė. Saw-tooth type piezoelectric multi-modal energy harvester. Sensors and Actuators A: Physical 2019, 288, 125 -133.
AMA StyleDalius Mažeika, Andrius Čeponis, Piotr Vasiljev, Sergejus Borodinas, Birutė Pliuskuvienė. Saw-tooth type piezoelectric multi-modal energy harvester. Sensors and Actuators A: Physical. 2019; 288 ():125-133.
Chicago/Turabian StyleDalius Mažeika; Andrius Čeponis; Piotr Vasiljev; Sergejus Borodinas; Birutė Pliuskuvienė. 2019. "Saw-tooth type piezoelectric multi-modal energy harvester." Sensors and Actuators A: Physical 288, no. : 125-133.
In this paper, the rotary type ultrasonic motor with bending spokes using radial mode, which can improve the output performance of ultrasonic motor and decrease the cost of manufacture, is presented. The proposed ultrasonic motor has good performance in the output torque and speed. The structure is simple and compact, so it has low dependence on the machining precision. The voltage to drive the motor is low and excitation method is simple. It is suitable for large-scale industrial application also due to its low production cost and reliable output. The current ultrasonic motor is designed for small size flying objects. Moreover, it can be used in miniature helicopter motors and micro-electronic equipment zoom systems such as capsule endoscope, electronic eyeball, SLR camera, smart phone, etc. The proposed motor has a wide application prospect in robot, medical device, micromechanical and aerospace science and technology field. Numerical simulations and experimental outcomes are given. The experimental investigation of the motor has confirmed the main results of numerical analysis and has given an opportunity to create high speed rotation.
Sergejus Borodinas; Piotr Vasiljev; Dalius Mazeika; Regimantas Bareikis; Ying Yang. Rotary type ultrasonic motor with bending spokes. AIP Conference Proceedings 2018, 2029, 020006 .
AMA StyleSergejus Borodinas, Piotr Vasiljev, Dalius Mazeika, Regimantas Bareikis, Ying Yang. Rotary type ultrasonic motor with bending spokes. AIP Conference Proceedings. 2018; 2029 (1):020006.
Chicago/Turabian StyleSergejus Borodinas; Piotr Vasiljev; Dalius Mazeika; Regimantas Bareikis; Ying Yang. 2018. "Rotary type ultrasonic motor with bending spokes." AIP Conference Proceedings 2029, no. 1: 020006.
Dalius Mazeika; Ramutis Bansevicius; Vytautas Jurenas; Genadijus Kulvietis; Sergejus Borodinas. Three degree of freedom piezoelectric actuator for precise positioning. 2018, 1 .
AMA StyleDalius Mazeika, Ramutis Bansevicius, Vytautas Jurenas, Genadijus Kulvietis, Sergejus Borodinas. Three degree of freedom piezoelectric actuator for precise positioning. . 2018; ():1.
Chicago/Turabian StyleDalius Mazeika; Ramutis Bansevicius; Vytautas Jurenas; Genadijus Kulvietis; Sergejus Borodinas. 2018. "Three degree of freedom piezoelectric actuator for precise positioning." , no. : 1.