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International Conference on Electrical and Electronics engineering, ELECO

作者： A. Kerem Doğueri R. Nejat Tuncay Özgür Üstün Mechatronics Engineering Program Istanbul Okan University Istanbul Turkey Electrical Engineering Department Istanbul Technical University Istanbul Turkey

Patent information is the term given to the technical and legal information that can be found in patent documents. Using patent information can help make informed decisions when choosing strategies for researching or developing new products. Patent information can be used to find out what already exists and build on it, find technology and market trends as early as possible, and avoid infringing patent rights of competitors. In this paper, the developments in actuators and control systems used in vehicle active suspensions are investigated based on the statistics obtained from the Cooperative Patent Classification (CPC) scheme. This patent information-based study can be repeated for any technology or product.

关键词： Patents Force Actuators Companies

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Synthesis and characterization of activated carbon derived from rubberwood sawdust by using KOH/KMnO4 as multiple function activation agents

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IOP Conference Series: Materials Science and engineering 2021年第1期1163卷

作者： S Phainuphong J Taweekun T Theppaya K Maliwan Energy Technology Program Faculty of Engineering Prince of Songkla University Hatyai Songkhla 90112 Thailand Department of Mechanical and Mechatronics Engineering Faculty of Engineering Prince of Songkla University Hatyai Songkhla 90112 Thailand.

This research is focused on the effects of impregnation ratios using KOH/KMnO4 as multiple function activation agents on microporous of activated carbon. Rubberwood sawdust, the waste from wood processing industry, was used as a raw material in synthesis of activated carbon by chemical activation. The rubberwood sawdust was carbonized at 400 °C for 1 hour under an inert atmosphere to produce char. Chars were impregnated with different proportions of KOH and KMnO4. Impregnation time for each mixture proportion (Char: KOH: KMnO4) was 24 hours before activation for 3 hours at 800 °C. The surface area, pore volume, micropore volume, pore size distribution, porous structure, and adsorption isotherm were examined and considered as the properties of activated carbon. The results showed that the activated carbon with an impregnation ratio of 10:10:5, 10:30:0, and 10:30:5 have the surface area 750.89 m 2/g, 1574.39 m 2/g, and 1346.10 m 2/g, respectively. The pore volume and micropore volume were in the range between 0.3289-0.6405 cm 3/g and 0.1920-0.3533 cm 3/g. The average pore sizes were 1.75 nm, 1.63 nm, and 1.65 nm, respectively. These synthesized activated carbons were characterized as type I isotherm and microporous solids.

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RRTN: An improved rapidly-exploring random tree approach for reduced processing times 11

RRTN: An improved rapidly-exploring random tree approach for...

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11th International Symposium on mechatronics and its Applications, ISMA 2018

作者： Mohammed, Hussein Jaradat, Mohammad Romdhane, Lotfi Mechatronics Graduate Program College of Engineering American University of Sharjah Sharjah United Arab Emirates

ISBN: (纸本)9781538610787

In this paper, we aim to improve on the processing time taken to run the Rapidly-Exploring Random Tree Star (RRT) algorithm with no regard for the path length. By restricting the area or volume in which the algorithm's nodes can be generated, a net improvement of the speed is observer. A further step is taken where the restriction is controller to either be in the form of a normal probability distribution or a uniform probability distribution. Both modifications are presented with the normal distribution resulting in significant improvements in the processing times. © 2018 IEEE.

关键词： Motion planning

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Compensated hybrid PI controllers for sampled-data controlled systems⁎

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IFAC-PapersOnLine 2018年第25期51卷 240-245页

作者： Quadros, Mariella M. Scola, Ignacio Rubio Leite, Valter J.S. Electrical Engineering Graduate Program CEFET-MG & UFSJ Belo HorizonteMG30510-000 Brazil Department of Mechatronics Engineering CEFET-MG DivinópolisMG25503-822 Brazil

In this paper we consider sampled-data systems controlled by hybrid PI controllers. In these systems, the sample time may induce some undesirable overshoot due to the postponed reset action on the control integral state, which deteriorates the performance of the closed loop by leading to output overshoot as well as to larger settling time values. We propose a methodology to compute a bounded compensating signal to be added to the control input that minimizes the overshoot and the settling time. The action of the compensating signal synchronizes the reset instants of the hybrid PI controller with the sample-time for a class of systems. The proposed methodology is tested in a laboratory setup system composed of two connected water reservoirs with capacity of 200 liters each, actioned by a variable velocity pump. The control objective is to regulate the level of the first tank and to reject disturbances. We compare the performances achieved by two different hybrid PI schemes with and without the proposed additive compensating signal. The experimental tests illustrate the performance, robustness and disturbance rejection achieved by our approach when applied to uncertain systems. © 2018

关键词： Controllers Closed loop control systems Disturbance rejection Embedded systems Hybrid systems Reservoirs (water) Sampled data control systems Compensating signal Control objectives Controlled system Laboratory set up Reject disturbances Sampled data systems Stability of hybrid systems Variable velocities

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Design and Development of a Multi-functional Laparoscopic Device

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Journal of Mechanics engineering and Automation 2019年第5期9卷 173-176页

作者： Tugrul Tansug Elif Taskin Eray Kurt Meltem Elitas General Surgeon Adatip Istanbul Private HospitalIstanbul 34912Turkey Mechatronics Program Faculty of Engineering and Natural SciencesIstanbul 34956Turkey

This study presents a design of a multifunctional laparoscopic appendectomy device that includes three surgical instruments commonly used in laparoscopic appendicitis surgeries:endoloop,endobag and *** collects these three independent surgical tools in a single laparoscopic appendectomy *** days there is a trend of moving to multi-functional surgery devices during minimally invasive *** main reasons behind the minimal invasive surgery are to avoid changing the devices several times during the operation,to reduce the time spent in operation,to increase the efficiency of the operation,to facilitate the follow-up of the camera and devices,and to leave trocars to be used for other surgical *** multi-functional appendectomy device that,we present here,provides these *** standard trocar entries are appropriate for its *** presented multifunctional laparoscopic appendectomy device offers more practical use in comparison to individual *** the other hand,development of these multi-functional surgery devices can be directly enhanced to the robotic surgery devices.

关键词： Apendectomy multi-functional laparoscopy SolidWorks surgery

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Superposition of Next Generation PON to Existing PON's OOK Signals

Superposition of Next Generation PON to Existing PON's OOK S...

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IEEE Global Conference on Consumer Electronics (GCCE)

作者： Shoki Ogawa Yasuyuki Okumura Katsuyuki Fujii Graduate Program of Mechatronics Graduate school of Sience and Engineering Nanzan University Nagoya Japan Faculty of Science and Engineering Nanzan University Nagoya Japan

ISBN: (数字)9781728135755

ISBN: (纸本)9781728135762

Recent research into raising the speed and capacity of optical access networks has focused on converting RF (Radio Frequency) signals into optical signals. One approach to efficient transmission, combining wide spread OOK (ON-OFF Keying) systems with phase modulation, is being actively researched. However, studies to date have considered only the downlink. This paper focuses on the uplink of optical access networks and proposes a method for demodulating superimposed OOK and phase modulation signals.

关键词： Optical modulation Phase shift keying Passive optical networks Optical distortion Uplink

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Evaluation of the Electric Field Distribution during Bending for Wearable Two-Dimensional Communication Sheets in the 2.4-GHz Band

Evaluation of the Electric Field Distribution during Bending...

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IEEE Global Conference on Consumer Electronics (GCCE)

作者： Ibuki Uda Katsuyuki Fujii Yasuyuki Okumura Graduate Program of Mechatronics Graduate School of Science and Engineering Nanzan University Nagoya Japan Faculty of Science and Engineering Nanzan University Nagoya Japan

ISBN: (数字)9781728135755

ISBN: (纸本)9781728135762

A communication medium known as a wearable two-dimensional communication sheet that can locate multiple small devices on clothes is being researched. By wearing the sheet, the desired communication may not be achieved because the sheet is bent owing to human movement. Therefore, in this study, we employ the finite-difference time-domain (FDTD) method to evaluate the electric field distribution inside the sheet in the 2.4-GHz band by considering the bending angle of the sheet to be a parameter.

关键词： Electric fields Finite difference methods Time-domain analysis Insulators Sensors Surface waves

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Evaluation of TCM to Coexisting OOK and PSK in Optical Access

Evaluation of TCM to Coexisting OOK and PSK in Optical Acces...

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IEEE Global Conference on Consumer Electronics (GCCE)

作者： Yuki Kuno Yasuyuki Okumura Katsuyuki Fujii Graduate Program of Mechatronics Graduate school of Sience and Engineering Nanzan University Nagoya Japan Faculty of Science and Engineering Nanzan University Nagoya Japan

ISBN: (数字)9781728135755

ISBN: (纸本)9781728135762

Studies for enhancing network speed and capacity to handle the rapid increases in traffic are being conducted. Even in optical access, which is the backbone network, studies on next generation modulation schemes that utilize phase and amplitude, rather than modulation by conventional light intensity, are being conducted. However, it is difficult to update all the terminals at once, and there is a possibility that signals with old and new modulation schemes coexist on one optical fiber. Such situations are known to yield high error rates. Therefore, this study evaluates the effectiveness of TCM (Trellis Coded Modulation), which is an error correcting scheme.

关键词： Adaptive optics Error analysis Modulation Optical network units Passive optical networks Extinction ratio Optical fibers

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Determination of feasible sites for wind farm using WAsP in Uttaradit, Thailand

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IOP Conference Series: Materials Science and engineering 2021年第1期1163卷

作者： T Khan J Taweekun T Theppaya Energy Technology Program Faculty of Engineering Prince of Songkla University Hat Yai Songkhla 90112 Thailand. Department of Mechanical and Mechatronics Engineering Faculty of Engineering Prince of Songkla University Hat Yai Songkhla 90112 Thailand.

Electricity production from the wind plays the potential role to reduce conventional way of electricity generation to reduce the negative impacts on the environment. In this study the data is collected from Uttaradit, the northern province of Thailand. The calculation in this study is based on ten-minutes interval data at 10 m observed during the year 2017-2019 by Thai meteorological department. Weibull distribution is applied to extract the monthly and yearly wind in the selected area by using wind atlas analysis and application program (WAsP). Moreover, in WAsP a stimulation was created to observe the comparison of potential of wind energy between three windiest sites located in the study area. The results generated show that the mean wind speed is 2.35m/s and the gradient wind direction from north and south are quite distinct. The annual energy production calculation of three sites in Uttaradit by WAsP estimates about 2125.815MWh, 3379.621MWh and 3369.235MWh respectively by using Bonus 300kW Mk III wind turbine. This paper suggests and supports the suitable sites and wind turbine for the electricity generation in Uttaradit. Hence, it will not only reduce the stress on conventional methods but also create awareness regarding the potential of wind energy.

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Assessment of wind energy potential of Hat Yai (Songkhla), Thailand

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IOP Conference Series: Materials Science and engineering 2021年第1期1163卷

作者： I Kamdar J Taweekun Energy Technology Program Faculty of Engineering Prince of Songkla University Hat Yai Songkhla 90112 Thailand. Department of Mechanical and Mechatronics Engineering Faculty of Engineering Prince of Songkla University Hat Yai Songkhla 90112 Thailand.

Due to environmental problems associated with fossil fuels and rising need for energy, wind power renewable energy will play a vital role in transformation of future energy structure in Thailand. Exploitation of wind energy for sustainable development, wind resource assessment plays an important role in wind power utilization. This case study presents wind resource assessment using the wind atlas analysis and application program (WAsP), in order to assess the potential of wind energy in Hat Yai, Thailand. Ten-minutes interval wind data observed by the Thai Meteorological Department recorded during the period 2017-2019, have been used to harness adequate wind power density and wind energy potential. The annual mean wind speed is 3.5 m/s at 10 m height above the ground. The prevailing direction southwest, south and northeast of the wind rose are very pronounced. The WAsP analysis estimates about 2,731.28 MWh of the total net annual energy production for the specific sites using the Enercon E-18 (80 kW) wind turbine of 1.92 MW capacity. The findings of this study indicate the possibility of the small-scale wind farm project for electricity generation in future.

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