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Similarity Model of MWA Thailand Water System for Error Estimation of Ultrasonic Flow Meter
(2017-01-01)
Wachirapunyanont, R.
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Kongratana, V.
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Gulphanich, S.
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Suesut, T.
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Nunak, N.
This paper proposed a similarity model of MWA water system using the dimensional analysis based on the theory of Buckingham Pi for error estimation of transit-time ultrasonic flow meter with clamp-on at different installation conditions. There were three main parameters groups, i.e., pipe characteristic, meter installation, and fluid characteristic and properties and could be arranged in five Pi terms, i.e. E×(L<inf>e</inf>/D), µ/ρvD, L<inf>e</inf>/D, U<inf>s</inf>/D and U<inf>s</inf>/D. The results showed that the relative errors of measurement increased with the decreasing of upstream and downstream of meter at the same velocity and there was a possibility to use the model to determine the correction factor to compensate the velocity measurement of ultrasonic flow meter as the installation could not comply with the requirement. However, the further experiments should be performed for validation of the model predictive equation i.e., E 0.3607 E <sup>.</sup> p m.
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3D inspection for HDD production process using laser light sectioning
(2015-01-01)
Gulphanich, S.
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Nunak, N.
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Suesut, T.
This research proposes the automatic visual inspection from three-dimensional characteristics of Hard Disk Drive case tightening process by machine vision system using laser light sectioning. The machine vision camera captures a number of features of HDD perpendicular to a conveyor belt as seen by a laser strip light. The narrow band pass filter (650 nm.) was mouthed in front of lens in order to cut off the unwanted wavelength. After image pre-processing, the laser profiles were calculated the center of gravity to extract the image coordinate. The features used here are the laser strip profile at various locations along the HDD formulating the 3D data. The homography computation was used to transform the image coordinate to the real world distance (in metric system). This scheme can be used to inspect the completeness of screwing process of the HDD which the 2D visual inspection cannot perform on the top view.
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3D metallic surface acquisition for inspection and reading character
(2013-11-04)
Suesut, T.
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Gulphanich, S.
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Roonprasang, K.
This paper presents a real-time implementation of 3D acquisition for reading text and inspection the metallic surface based on light sectioning. A measurement is achieved with a standard low cost CMOS camera. Surface defects are modeled as deviations in the local relief from a smooth approximation of the surface. Discrete orthogonal bases are used to generate a smoothed global model of the surface structure. Modified discrete Tchebychev polynomials are used as orthogonal basis functions to perform least square approximations of the geometry. QR decomposition is used to obtain a unitary basis, minimizing the numerical effort when modeling surfaces. The result of test measurements on copper sheets in a production environment is presented to demonstrate the surface inspection. Another result is shown the readable character on the textured metallic surface after the proposed processing. A prototype system of the laser scanning instrument can be implemented in a production line as well. © (2013) Trans Tech Publications, Switzerland.
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Servo state feedback control of the self balancing robot using MATLAB
(2012-12-01)
Kongratana, V.
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Gulphanich, S.
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Tipsuwanporn, V.
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Huantham, P.
In this paper, the servo state feedback control of the self balancing robot is proposed. Balancing robot system to control is used ADXL3xx accelerometer as sensors to measure the angle and angle changes and then sends signals to the Servo motor for robot can balance the stability, respectively. Self Balancing robot control are application of MATLAB / Simulink program which served to simulation the process system and control self balancing robot in real-time by FiO board. More importantly, the robot system use Servo state feedback control that is implemented on FiO Board. Finally, the results from simulation with the experimental results from to comparison. The results shown that servo state feedback control system designed and implement to the FiO Board can stabilize the self balancing robot are satisfied. © 2012 ICROS.
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Controller design base on servo state feedback for two-wheeled balancing robot
(2012-01-01)
Huantham, P.
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Kongratana, V.
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Gulphanich, S.
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Tipsuwanporn, V.
This paper presents the controller design for the two-wheeled balancing robot system. The proportional- derivative (PD) controller was designed to compare the performance with servo state feedback controller designed by pole placement technique. Both controllers are used to stabilize the two-wheeled balancing robot system. Simulation results show that servo state feedback design can stabilize the balancing robot. Moreover, the presence of its large deviation angle is also better than PD controller.
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Water management simulation for electric current generation by Max-Min Ant system
(2009-12-01)
Roengruen, P.
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Ploysuk, B.
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Suesut, T.
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Gulphanich, S.
This paper is intended to purpose the development strategy in order to manage power generation in hydro power plant. The collecting data was used to investigate some factors that impact to power generation in hydro power plant and to integrate with Max-Min Ant system (MMAS) analysis which grouped in artificial intelligence. This method has been applied by the simulating ant food solution to properly compute the power generation which depends on time variant. Moreover, this method is computed based on the lowest producing cost. Finally, the analytical data has been simulated and tested on computer before launching to control the hydropower plant operation. © 2009 SICE.
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Separately excited DC motor drive with fuzzy self-organizing
(2007-12-01)
Tipsuwanporn, V.
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Numsomran, A.
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Klinsmitth, N.
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Gulphanich, S.
This paper presents the algorithm for speed control of a separately excited dc motor (SEDCM) drive with fuzzy self-organizing. The objective is to design the system that can learn, increase, reduce and modify rule in knowledge base or rule base to suit the case and set response within acceptable area. The concepts about state analyze and performance measure are used to determine the modification rule in the knowledge base. The structure of fuzzy self-organizing controller consists of self-organizing control, dc chopper and speed sensor devices. For the control method, the close loop speed techniques are applied. The fuzzy self-organizing algorithm is experimented by controlling the speed of separately excited dc motor. The rules of fuzzy self-organizing with separately excited dc motor is to see response when load is changed. © ICROS.
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Interpretation petri net model to IEC 1131-3: LD for programmable logic controller
(2004-12-01)
Suesut, T.
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Inban, P.
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Nilas, P.
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Rerngreun, P.
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Gulphanich, S.
The Programmable logic Controllers (PLCs) are widely used in industrial. Thus PLCs usually used the IEC 1131-3 standard programming language. The ladder diagram is the most popular language that similar to the electrical schematic diagrams which does not require a lot of the steps and sequences of the operation. Therefore it is difficult to understand the program structure and developing the system. The Petri nets is one of graphical models that can be explained the system operating easily and clearly. This paper presents the transformation structures from Petri Nets to Ladder diagram and possible implementation to control the process through PLC's input and output. In this article can be applied to other applications on any PLCs as well.
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A design of automatic warehouse for internet based system
(2002-01-01)
Suesut, T.
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Tipsuwanporn, V.
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Gulphanich, S.
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Rodcumtui, J.
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Sukprasert, P.
This paper presents the development of inventory control system for a prototype internet-based using automatic warehouse. To decrease lead-time and economics is very important in industrial management. Therefore this paper has developed the information system as well as the automatic warehouse machine in order to decrease lead time and increase network connectibility also. The automatic warehouse machine consists of 3 set of AC motor for drive 3 axises of mechanical system controlled by Programmable Logic Controller: PLC. A technique to order and storage for any materials or goods can be done automatically inform of FIFO (First In First Out) by host computer together with PLC that connected to the Internet as Internet Server. The profits of this system can be decreased the lead-time, therefore the holding cost and operation time are also decreased.
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Development of PLC fiber-optic network for redundant system
(2002-01-01)
Tipsuwanpom, V.
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Sangrayub, A.
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Suesut, T.
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Numsomran, A.
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Gulphanich, S.
This paper present the development of PLC local area network system through the fiber-optic cable for control high priority process by use three PLC make redundant system With three modules of controller and its highspeed communication thus we can consider failure tolerant system to control high priority process for more reliability prevent process down time and reduce maintenance time.

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