Yangon Technological University

www.ytu.edu.mm
Rangoon, Myanmar

Yangon Technological University , located in Gyogone, Yangon, is the premier engineering university of Myanmar. Established as Department of Engineering under Rangoon University in 1924, and popular known by its former name RIT , YTU is the country's oldest and largest engineering university, and one of the most selective universities in Burma. The university offers bachelor's, master's and doctorate degree programs in engineering disciplines to nearly 8000 students.YTU is a member of ASEAN University Network, Southeast Asia Engineering Education Development Network , and Greater Mekong Sub-region Academic and Research Network . Wikipedia.


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Aung M.T.S.,Kyushu University | Aung M.T.S.,Yangon Technological University | Kikuuwe R.,Kyushu University
2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015 | Year: 2015

This paper proposes a position control scheme that is suitable for the use as the internal position servo of an admittance controller. The proposed controller is characterized by four points: (a) PDD2 (proportional, derivative, and second derivative) feedback, (b) dither-based friction compensation, (c) sliding-mode-based noise filtering, and (d) variable D2 gain. The PDD2 structure and the friction compensation are theoretically expected to contribute the stability of the admittance control by expanding the bandwidth of the internal position control system. The sliding-mode-based filter is for smoothing the acceleration signals without producing a large phase lag. The variable D2 gain is for reducing the effect of acceleration-measurement noise at low velocity. The proposed controller was tested with a 1-DOF device in contact with environments. © 2015 IEEE.


Tyar S.M.,Yangon Technological University | Win T.,Yangon Technological University
Proceedings - 2015 7th International Conference on Information Technology and Electrical Engineering: Envisioning the Trend of Computer, Information and Engineering, ICITEE 2015 | Year: 2015

Word Sense Disambiguation (WSD) has become a popular method for solving the ambiguous meaning of the words in Information Retrieval (IR) field area. Under the Natural Language Processing (NLP) community, WSD has been described as the task which able to select the appropriate meaning among the ambiguous meanings to a given word. Among three approaches, supervised based, unsupervised based and knowledge based approaches to WSD, this paper focuses on both supervised based and knowledge based approaches by proposing new Jaccard coefficient-based WSD algorithm to overcome the vocabulary miss match problem. WordNet and corpus external knowledge resources are utilized as the sense repositories by linking up with the new WSD algorithm to consider additional semantic for WSD. According to sample testing, IR system with new WSD algorithm attains more about 20 percent of total accuracy rate than traditional IR system. © 2015 IEEE.


Thin M.M.,Yangon Technological University | Than M.M.,Yangon Technological University
Proceedings - 2015 7th International Conference on Information Technology and Electrical Engineering: Envisioning the Trend of Computer, Information and Engineering, ICITEE 2015 | Year: 2015

Acting as the gateway between the «real world» analog signal and digital signal, data converters have become a critical element of modern electronic devices. High-performance applications have put a particular emphasis on high-speed data conversion converters. A variety of converter architectures are being used to reach these higher speeds, each with special advantages. In modern life, the improvements of technologies and design methods have allowed to implement Successive Approximation Register (SAR) analog-to-digital converter (ADC) for higher performance. However, this converter has «N» time conversion steps required to digitize a sample for «N» bit due to the nature of successive approximation algorithm. To solve this situation, the new high performance architecture based on SAR ADC with charge redistribution DAC is created. In this paper, the proposed system modifies the SAR function to get high speed by reducing the number of bit cycles. Therefore, the proposed architecture can obtain better speed than the conventional architecture. © 2015 IEEE.


Zar Phyu T.,Yangon Technological University | Oo N.N.,Yangon Technological University
MATEC Web of Conferences | Year: 2016

Feature Subset Selection is an essential pre-processing task in Data Mining. Feature selection process refers to choosing subset of attributes from the set of original attributes. This technique attempts to identify and remove as much irrelevant and redundant information as possible. In this paper, a new feature subset selection algorithm based on conditional mutual information approach is proposed to select the effective feature subset. The effectiveness of the proposed algorithm is evaluated by comparing with the other well-known existing feature selection algorithms using standard datasets from UC Iravine and WEKA (Waikato Environment for Knowledge Analysis). The performance of the proposed algorithm is evaluated by multi-criteria that take into account not only the classification accuracy but also number of selected features. © 2016 Owned by the authors, published by EDP Sciences.


Aye M.M.M.,Yangon Technological University
World Academy of Science, Engineering and Technology | Year: 2011

Any rotation of a 3-dimensional object can be performed by three consecutive rotations over Euler angles. Intrinsic rotations produce the same result as extrinsic rotations in transformation. Euler rotations are the movement obtained by changing one of the Euler angles while leaving the other two constant. These Euler rotations are applied in a simple two-axis gimbals set mounted on an automotives. The values of Euler angles are [π/4, π/4, π/4] radians inside the angles ranges for a given coordinate system and these actual orientations can be directly measured from these gimbals set of moving automotives but it can occur the gimbals lock in application at [π/2.24, 0, 0] radians. In order to avoid gimbals lock, the values of quaternion must be [π/4.8, π/8.2, 0, π/4.8] radians. The four-gimbals set can eliminate gimbals lock.


Haine A.T.,Kumamoto University | Haine A.T.,Yangon Technological University | Niidome T.,Kumamoto University
Journal of Photopolymer Science and Technology | Year: 2015

Gold nanoparticles have been becoming attractive metals in biomedical applications. The unique optical, chemical, and biological properties of gold nanoparticles have supported them for clinical interest in several applications including drug and gene delivery. Gold nanorods have strong absorption bands in the near-infrared region, in which light penetrates deeply into tissues. Hence, gold nanorods are expected to act not only as on-demand thermal converters for photothermal therapy but also as controllers of a drug-release system responding to irradiation by near-infrared light. These attributes can be promoted to provide an effective and selective platform for a targeted intracellular release of some substance. Here we review recent advances in the use of gold nanorods in drug and gene delivery systems. © 2015 SPST.


Aung M.T.S.,Kyushu University | Aung M.T.S.,Yangon Technological University | Kikuuwe R.,Kyushu University
Proceedings of the American Control Conference | Year: 2015

High-gain proportional-integral-derivative (PID) position control can achieve stiff position control but it involves the risk of overshoots in some cases such as discontinuous position commands and disturbances. This paper presents a new position controller that achieves accurate trajectory tracking and overdamped resuming motion from large positional errors and disturbances. The proposed controller is a combination of PDD2 (proportional, derivative, and second derivative) controller with nonlinear D2 term, which we call (N-PDD2), and the output of a friction compensator (FC). The nonlinear D2 term allows the use of high gain PDD2 and thus, advantageous in dealing with disturbances. Accurate trajectory-tracking is achieved due to friction compensation. The validity of the proposed controller was demonstrated through experiments in realizing overdamped motion and accurate tracking simultaneously and achieving improvement in robustness to disturbances in a robotic manipulator. © 2015 American Automatic Control Council.


Htet K.K.,Yangon Technological University | Kyaw W.W.,Yangon Technological University | Htwe T.Z.,Yangon Technological University | Oo Z.,Yangon Technological University
2016 13th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, ECTI-CON 2016 | Year: 2016

In accordance with radiation data of Myanmar, solar energy is one of the best options for electrical energy generation techniques. PV solar panels or array are electrically connected or 'tied' to the local mains electricity grid which feeds electrical energy back into the grid is known as a 'grid-tied', or 'on-grid' solar system [6]. In this paper, the performance of grid connected PV system that is installed in Super Mega Factory is presented. The output results are collected and analyzed. To get the maximum output power makes the correction of collector angle and place suitable panel position. © 2016 IEEE.


Aye Naing T.S.,Yangon Technological University | Mon M.S.,Yangon Technological University | Nu S.S.,Yangon Technological University
2016 13th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, ECTI-CON 2016 | Year: 2016

This paper presents an experimental investigation of the melting behavior of phase change material (PCM) to use in a solar domestic hot water tank. Commercial grade stearic acid is used as PCM packed in cylindrical copper tube and the hot water surrounding is used as heat transfer fluid (HTF) and sensible heat storage material. A detailed parametric investigation is performed for melting PCM in cylindrical shell of 33 mm in diameter by dividing three different layers along its axial direction. The melting behavior of the PCM in a vertical cylindrical tube with the change of flow rate of HTF is studied. The experimental results show that the melting duration in each layer of PCM is not the same. The melting duration of PCM in top layer is shorter than the bottom layer. It is also observed that the time required for complete melting is longer in lower flow rate of inlet HTF. © 2016 IEEE.


Aung Z.T.,Yangon Technological University | Mon M.S.,Yangon Technological University | Nu S.S.,Yangon Technological University
2016 13th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, ECTI-CON 2016 | Year: 2016

This paper discusses air conditioning system by using solar thermal energy for performance enhancement and energy efficiency improvement. An evacuated solar collector with hot water storage tank would be installed after the compressor to increase coefficient of performance (COP) of the system at full load. Solar energy and waste energy are fully utilized so less power would be required to run compressor, this is turn allows for smaller compressor to be installed that offer even better savings on power consumption. The proposed system delivers higher system efficiency owing to the higher refrigeration effect in the direct expansion evaporator. According to calculation results, the refrigeration effect of proposed method is increased than that of conventional method. The decreased in mass flow rate is due to increased refrigeration effect and a decrease in compressor work (increased COP). Thus, the novel development is expecting for improvement of energy efficiency, enhancement of the system performance while fulfilling the cooling demand. Consequently, this system can be saved around 40% of electrical energy. © 2016 IEEE.

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