B. Purahong

King Mongkut's Institute of Technology Ladkrabang, Krung Thep, Bangkok, Thailand

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Publications (13)0 Total impact

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    ABSTRACT: We report the 3rd year's progress of an internet based crossover robot remote control competition which is an international cooperative educational project among Japan, China, Thailand, and Taiwan. In 2009 we proposed a new competition model called “Cargo loading via internet based cooperation” in which a locally controlled humanoid robot and a wheeled mobile robot under remote control cooperate with each other to search for and find some cargos, then load them on the mobile robot or put them into a cargo box. The unique of the project is that everything concerned with the competition, e.g. the competition rules, the detailed technical problems, etc., are discussed and solved by students themselves from different partner universities via the internet based cooperation. The demonstration of the proposed competition between UEC and partner universities proves the project helps to improve students' practical ability, creative thinking, good teamwork spirit, and communication skills in English, etc.
    Mechatronics. 12/2013; 23(8).
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    ABSTRACT: We report the up-to-date progress of an internet based crossover robot remote control competition project starting from 2007, which is an international cooperative education program among Japan, China, Thailand, and Taiwan. The project contains two sub-subjects: the robot competition and the student-student cooperation among the participating universities. The competition is designed to be remotely controlling a robot via the internet to cooperate/compete with a locally controlled robot to finish some specified tasks where both robots are made by the students. The unique feature of the project is that everything concerned with the competition, e.g. the competition rules, the detailed technical problems, etc., are discussed and solved by the students themselves via the internet based cooperation. The demonstration of the competition between UEC and each of the partner universities proves the project helps to improve students' practical ability, innovative skills, good teamwork spirit, and communication skills, etc.
    01/2011;
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    ABSTRACT: This paper reports the up-to-date progress of an internet based crossover robot remote control competition which is an international cooperation project of UEC of Japan, UESTC of China, KMITL of Thailand, and TKU of Taiwan. We propose a new competition style called "cargo relay transportation by a locally controlled humanoid robot and a remotely controlled robotic vehicle" in which a locally controlled humanoid robot picks up an object from source, walks to a midway area and hands over the object to a robotic vehicle before it moves to destination and put the object into a box under the remote control via the internet. The robots are developed by students via the internet-based collaboration. The demonstration of the proposed competition between UEC and partner universities proves the project has unique benefits to students in term of improving students' practical ability, creative thinking, good teamwork spirit and communication skills in English, etc.
    Mechatronics and Automation, 2009. ICMA 2009. International Conference on; 09/2009
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    ABSTRACT: This paper presents the slot antenna fed by microstrip line with inset U-strip for dual frequency operates in WLAN applications. The rectangular slot antenna is proposed for comparison between with and without U-strip in slot antenna by using three configurations of slot antenna. This antenna is designed for dual frequency used in WLAN system coverage IEEE 802.11 b/g (2.4-2.4835 GHz), IEEE 802.11j (4.90-5.091), IEEE 802.11a (5.15-5.35 GHz) and WiMAX of IEEE802.16d (5.7-5.9 GHz). The PCB-FR4 substrate with dielectric constant (epsiv<sub>r</sub>) 4.5 of thickness 1.6 mm is chose for low cost. The simulation results of these slot antennas are analyzed by using Method of Moment (MoM) from IE3D Software. Finally, the result of bandwidth at low frequency and high frequency of the desirable antenna are 9.76% and 31.6% at frequency range 2.3-2.58 GHz and 4.76-6.34 GHz, respectively.
    Control, Automation and Systems, 2008. ICCAS 2008. International Conference on; 11/2008
  • B. Purahong
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    ABSTRACT: Fuzzy P<sup>2</sup>ID is the controlling algorithm, which derived from the combination of the fuzzy PD and fuzzy PI in order to reduce the Rise-time and Overshoot. The recent development of SS fuzzy P<sup>2</sup>ID is based on the original algorithm of fuzzy P<sup>2</sup>ID, in which the SS fuzzy P<sup>2</sup>ID is the algorithm developed in order to correct the crisp signal problem of the original algorithm. This report describes the application of the soft-switching fuzzy P<sup>2</sup>ID controller to be used as the navigation system of the wheel chair-propel robots. The results of using both original and recent developed algorithms were compared by using the Simulation under the same parameter to both algorithms, as a result the satisfactory result of the recent development algorithm was found.
    Industrial Electronics and Applications, 2008. ICIEA 2008. 3rd IEEE Conference on; 07/2008
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    ABSTRACT: This paper presents the technique for reducing size of double rectangular slot loop antenna fed by microstrip line for dual frequency. The two difference configurations of double rectangular slot loop antenna are proposed for comparison on bandwidth and size of antenna. These antennas are designed for dual frequency support WLAN system coverage IEEE 802.11b/g (2.4-2.4835 GHz), IEEE 802.11j (4.90-5.091), IEEE 802.11a (5.15-5.35 GHz), and IEEE 802.16d (5.7-5.9 GHz). The PCB-FR4 substrate with dielectric constant (epsivr) 4.5 of thickness 1.6 mm is chose for low cost. The simulation results of these slot antennas are analyzed by using method of moment (MoM) from IE3D software. In this case, the result of bandwidth for low frequency and high frequency of one antenna are 11.29% and 62%, and other are 6.1% and 75.5%, respectively. The size with ground plane of double slot loop antenna can be reduced 12.9% or can be reduced size of double slot loop antenna about 21.5% when set the new inner conductor.
    SICE Annual Conference, 2008; 01/2008
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    ABSTRACT: The coplanar waveguide fed slot antenna with inset U-strip tuning stub is proposed for wideband applications. The antenna consists of rectangular slots with conductor tuning stub fed by CPW feed line. This antenna is design for match impedance with 50 ohm of characteristic impedance of transmission line. By adjusting dimension of inset U-strip tuning stub, the range of bandwidth can be achieved from 1.66 GHz to 7.22 GHz which can operate in WLAN (Wireless Local Area Network) according to IEEE 802.11 a/b/g standards and covered the WiMAX (Worldwide Interoperability for Microwave Access, IEEE 802.16e) and can operate for mobile GSM1800, GSM 1900. The characteristics of antenna are proposed and analyzed for instance input impedance, return loss, bandwidth, VSWR, and far field radiation patterns.
    01/2008;
  • B. Purahong
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    ABSTRACT: This paper shows the development of controlling system of snake robot's movement in order to make the Serpentine movement more effective when it goes into narrow path. Snake robot consists of many servo motors serially linked to each other and has its length like a medium-sized snake's. This controlling system measures the side lengths, which are inputs, from the sensors attached on the head of the robot. The robot then processes the inputs and uses them to control the width of crawling in order to perform the crawling at the best speed on limited path. The ways to control it to move forward, backward, left, right, and algorithms used to control are already explained. The result of this experiment, which is an achievement of movement in different locations, shows that it works effectively.
    Control, Automation and Systems, 2007. ICCAS '07. International Conference on; 11/2007
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    ABSTRACT: The issue of this paper is to show working status of a robot in the form of face emotion which shows the creation of fuzzy emotion generator. This fuzzy emotion generator uses Takagi-Sugeno (TS) fuzzy system to process input data from heat sensors on CPU and batter indicator into emotional output of a robot for visualization. The visualization system that was built can completely show robot's emotions. The experimental results show the advantages of the application of fuzzy system in presenting the output and its advantages are natural continuation which is the result of successful implementation
    SICE-ICASE, 2006. International Joint Conference; 11/2006
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    ABSTRACT: This paper shows how to design the hybrid control system based on hydra control structure by introducing two design strategies which are as following: double head and line up. These two strategies use genetic algorithms to improve parameters in control system and they also situate the challenge and best-selection processes which are the methods to compare the efficiency of the system after they have been genetically calculated. In order to select an appropriate control system in each layer, the simulation's results in the end will show the test with non-linear plant to show the efficiency of control system after it has been developed by designing and tuning process
    01/2006;
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    ABSTRACT: This paper is about using fuzzy PI controller in order to help control the gap in magnetic levitation system (maglev). The details of this paper concerns about the model of maglev system which is applied to floating robots; it is also about how to use fuzzy PI controller for assisting the maglev system in order to make this system more accurate and faster. From the simulation which compared the reactions between fuzzy PI and the original PI, it showed that fuzzy PI had faster response without swaying the output values while it was reaching the setpoint values. Therefore, the fuzzy PI is suitable to control the maglev system in floating robots.
    Robotics, Automation and Mechatronics, 2004 IEEE Conference on; 01/2005
  • K. Maneesilp, B. Purahong, P. Sooraksa
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    ABSTRACT: This paper presents a new design of cellular neural network for controlling hexapod robot movement on forward motion. It shows a set of new state equations which higher propagation than the original one. These new equations reduce number of CNN pattern generation cells from 12 to 6 cells. As a result, this provides a new technique for designing CNN analog control circuits which can be reduced circuit components and simplified the system architectures.
    Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE; 12/2004
  • Source
    Boonchana Purahong, Pitikhate Sooraksa
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    ABSTRACT: This paper presents a GA-fuzzy P2ID control system for the flexible-joint robot arm. This controller is designed based on the parameter adjustment using fuzzy logic and genetic algorithms. According to the simulations, the better performance has been achieved acquired that the robot moved smoothly and met its required objectives. The results of comparison between 8 parameters and 10 parameters can be conclusion that the 10 parameters have setting time little than 8 parameters. In usability can be use 8 or 10 parameters these one.