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Author: search.filters.author.Gulpanich, Suphan

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    PLC-based mobile mecanum robot as multipurpose vehicle
    (2018-12-10)
    Wongvanich, Napasool
    ;
    Gulpanich, Suphan
    ;
    Suesat, Taweepol
    ;
    Kongratana, Viriya
    This paper presents the mobile robot that is able to mobilize in every direction through the use of four DC-motors-powered mecanum wheels. Each wheel can be programmed to rotate independently, allowing the vehicle to move in any direction without first turning, and thus can be used to navigate in narrow fields. The robot is controlled through the use of the Programmable Logic Controller CP1H-XA40DT-D, that takes the user intended direction from a joystick command and converts this command into movement vectors in conjunction to the mathematical kinematics model of the mecanum wheels. The motors themselves are controlled from the PWM signals. Two speed experiments were conducted. The first experiment tests the speed of the robot in a no-load environment, whilst the second tests the robot speed in a 50-kg loaded environment. Results show that the maximum attainable speed is around 31.9 ms <sup>−</sup> <sup>1</sup> with a drop of about 10% for the case of the added load from the no-load condition. This result validates the proposed applicability of the prototype as a wheelchair as well as a self-control shopping cart.
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    Comparative study of character recognition on Thai license plate using DCT and FIR system
    (2018-12-10)
    Sirisantisamrid, Kaset
    ;
    Wongvanich, Napasool
    ;
    Gulpanich, Suphan
    Thai characters have rather similar shapes, which they are not same as English characters that have distinct shapes. Thereby, performing of Thai character recognition is not simple. In this paper, the recognition of characters and numbers on Thai license plate using DCT and FIR system methods is proposed and compared base on recognition rate. There are two ways of studying in DCT method. First, compute the coefficients of 1D-DCT by separation in the horizontal and vertical complements of character and represent them as the features of character. Second, combine the coefficients of 1D-DCT at each component in form of power spectrum of DCT and use it as the character features. For FIR system method, the impulse responses of FIR system are used as the features of character. The 120 car images under variant illumination conditions are used to testing all three methods. Moreover, some images are incomplete conditions such peeling paint, stained with slush and so on. In the results, the success of recognition rate for separation of DCT coefficients, power spectrum of DCT and FIR system methods was 99.15%, 48.30% and 98.30%, respectively.
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    PLC-Based Wheelchair Control with Integration of the Internet of Things
    (2018-10-15)
    Gulpanich, Suphan
    ;
    Petchhan, Jirayu
    ;
    Wongvanich, Napasool
    This paper presents a PLC-based mobile mecanum-wheeled wheelchair control algorithm with the integration of the Internet of Things (IoT). The design aims to enhance comfort to the handicapped by offering wireless wheelchair control in addition to the Human Machine Interface (HMI) over the Ethernet port. The bottom-up approach was taken where proportional mobility control in the vector form of speed and direction is firstly configured and displayed over the touch screen. Remote access is then designed to access through the use of the HMI Remote Viewer application which supports and displays the corresponding speed and direction on a smartphone, upon wireless communication. Results show that the communication speed is within the rapidity range, whereas the locomotion test shows an average of 8.5% drop in speed from the no-load case to the loaded case. The proposed design thus provides a complete range of wheelchair control which can be used to assist the handicapped.
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    LQR/PID controller design of PLC-based inverted pendulum
    (2018-01-01)
    Sirisantisamrid, Kaset
    ;
    Wongvanich, Napasool
    ;
    Gulpanich, Suphan
    ;
    Tammarugwattana, Narin
    This paper presents an LQR based PID controller to control the inverted pendulum system. The control design employs a control zoning approach whereby the entire pendulum system is divided into two regions: a normal pendulum region and the inverted pendulum region where the system is approximately linear close to the upright position. The LQR architecture is used to obtain optimal gains for the PID controller. An algebraic approach is also presented for selection of Q and R matrices. Experimental implementations with a PLC based system show that the computed gains yield the most stable controlled responses compared to the gains chosen through trial and errors.
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    The developing tool for heat exchanger education in instrumentation engineering
    (2016-01-24)
    Oranpaiboon, Nurawit
    ;
    Krongratana, Viriya
    ;
    Tipsuwanpom, Vittaya
    ;
    Gulpanich, Suphan
    The purpose of this paper is to find out the method for constructing heat exchanger model that is a mathematical model comparing with balance energy technique. Firstly, the energy balance applies energy laws for calculating energy between hot and cold side of temperature which is the energy of input equal to energy of output and the result of this process is the outcome temperature would increase further to energy power that heater provides from hot side of heat exchanger. Secondly, Mathematical Model is related to using equations of thermal and finding transferred functions of system and variables of heat exchanger and simulation for responding viewing of output temperature. Finally, this project about energy balance and Mathematical Model would help some other plants in building plant model and calculating energy of system. The result of this method would help to compare between energy balance method and Mathematical Model and results outcome of both.
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    Implementation the performance of programmable logic controller base on embedded systems
    (2012-01-01)
    Gulpanich, Suphan
    ;
    Suesut, Taweepol
    ;
    Tirasesth, Kitti
    This paper presents an approach to implementation for PLC used embedded application. We had created the designs base on structure model. The hardware are consist of 32-bits microcontroller (LPC2378), 4 Chanel analog I/O and 32 points digital I/O, and multi communication unit. The software considerable operating system on multitasking is called the real-time operating system (RTOS). This article discusses the scan time is very important for the PLC controller. It also shows how to calculating scan time then approach to run the user program. In the empirical study considered only the scan time operated by IL program, 20 commands. Which can be measuring respond time for appropriate the results equal to 152 μSec. while the PLC own calculation and run the program equal to 151 μSec. Both values are similar, different by 1 μSec. only © 2012 SICE.
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    Implementation programmable logic controller for THAILAND industries
    (2005-12-01)
    Gulpanich, Suphan
    ;
    Tipsuwanporn, Vittaya
    ;
    Suesut, Taweepol
    ;
    Tirasesth, Kitti
    This paper presents a design of Programmable logic Controllers that can be used in manufacturing automation and process control systems. Most of controllers have been import from oversea. This research focuses on PLC local development by KMITL. The PLC system consists of CPU unit, Digital I/O RTU unit and Analog RTU unit. The experimental model is used to measure PLC scan time. The result can let us know controller performance to be applied in appropriate scale of plant in the manufacturing automation. In this article, there are many benefits to industries especially to support SME that can use local technology. © 2005 IEEE.
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    Distributed control of network devices with remote terminal units
    (2005-12-01)
    Gulpanich, Suphan
    ;
    Numsomran, Arjin
    ;
    Tipsuwanporn, Vittaya
    ;
    Tirasesth, Kitti
    One of problems in industries is an installation for an automation system device such sensor, transducer, controller and so on those are located in different areas. Such problem makes a difficulty for maintenance and installation. The aim of this research attempts to design a high performance controller with remote devices. One attractive is to group near devices in near place together to centralizes control. This paper presents the operating program and network device groups distributed through digital and analog Remote Terminal Unit (RTUs) and . Such devices are centralized by computer control and communicated with similar protocol through serial bus. Our scheme, there are many advantages such as, saving both time and cost, convenience compared to other ways. © 2005 IEEE.