Thepmanee, Teerawat
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Item type:Publication, Application of GD3 in value engineering for plastic-part design(2008-12-01); ; Ukakimaparn, PrapartThis paper presents the technique in way engineering value that comes to apply for designing of product plastic. The technique analyzes the data of designing by GD<sup>3</sup> and measures defensive problem in advance of engineering value. Consequently, the technique can prevent the problem and control the designing relate to engineering value before build a mold for product. For acquire knowledge give with the work and can design the product that can have picture stability. Moreover, This technique can decrease material loss, time operation and inventory. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Integration of wireless HART network system into SCADA software for operation & management(2016-11-18); ; This paper describes the technique to integrate HART field devices into SCADA (Supervisory Control and Data Acquisition) system. Wire HART field device is connected to WirelessHART adapter (THUM) and WirelessHART device are assigned act as RTU(Remote Terminal Unit) in SCADA system. In system, THUM and WirelessHART device communicate to WirelessHART gateway that collects their data and send to master station with Modbus/TCP. The paper presents the practices to install and configure the THUM with control valve wire HART device, WirelessHART transmitter, tags assignment, and so on that focus for HART parameters mapping in order to device operation and management. Effectiveness of the proposed system integration is verified by simulation and experimental results. Moreover, the technique can be applied in existing plants or in new project to support end-users to quickly and easily gain the benefits of device diagnostic and decision support for operation and management. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Safety and availability of basic process control using foundation fieldbus with control in the field - An experimental analysis(2017-08-01); Detailed knowledge of how to balance between safety and availability for instruments is essential to successful design and implementation in fieldbus-based process control systems. The configuration correctness is crucial to actually obtain the benefits of digital fieldbus technology used. In actuality, a number of device parameters must be set to provide the required functionalities. This paper focuses on improving safety and availability for the proportional-integral-derivative (PID) and cascade control strategies using Foundation Fieldbus (FF) with control in the field. The aim of this paper is to analyze the logical behaviors of PID and cascade loops in two conflicting purposes for studying how different configuration options affect the interlocks between function blocks located in instruments as well as the initialization and fail-safe mechanisms in response to invalid measurements. For safety purpose, the interested control loops are configured to bring the process to a safe state in the presence of a fault. For availability purpose, the interested control loops are configured to keep the process running in the event of a failure. A water tank process is utilized as a case study for control loop implementations. Interactions between the status propagation and mode shedding for demonstrating the studied control loop behaviors are examined experimentally in Petri net models. In addition, the function block options for bumpless transfer and setpoint tracking are also described. The proved configuration method for proper operations in balancing the interests of safety and availability is proposed. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Power saving techniques to improve efficiency of a parallel-connected negative DC-DC converter(2013-09-02); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A simple technique to modeling and simulation four-axe robot-arm control(2007-12-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Safety enhancement for basic process control using 4-20 milliampere signal transmission(2021-08-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Family of Fibonacci-Type Marx Generators with a Single Inductor in a Three-Phase Configuration(2024-01-01); High-voltage discharge applications have seen a widespread adoption of solid-state Marx generators (SSMGs) in recent years. In this paper, we propose a new hybrid solid-state Marx generator (HSSMG) with a single inductor. Through the application of a three-phase Fibonacci scheme, the HSSMG is capable of achieving a substantial increase in voltage output. Furthermore, the proposed HSSMG is able to generate high voltage efficiently with fewer components. The integration of the Fibonacci and boost modules is a crucial idea in the proposed technique, where the boost module increases the output voltage of the Fibonacci module to achieve higher output voltage. Regarding the proposed two-stage HSSMG, the theoretical feasibility of the proposed topology is confirmed by theoretical analysis and Simulation Program with Integrated Circuit Emphasis (SPICE) simulations. As a result of comparative analysis, it was found that the number of circuit components of the proposed two-stage HSSMG is approximately half that of the traditional SSMG. Moreover, the newly suggested two-stage HSSMG accomplishes more than 86% power efficiency at 5 W. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Reliability modeling of emergency shutdown function for heat recovery steam generator control(2016-10-01); This paper presents a method for evaluating reliability and unreliability of emergency shutdown function for a control system of heat recovery steam generator (HRSG), which is operated with active redundant for providing safety and protection. The studied triple-pressure HRSG for driving the steam turbine in a power plant consists of three sections: high pressure section, intermediate pressure section, and low pressure section. A safety shutdown is based on level and pressure sensing system with three pressure transmitters and three level transmitters in each section for implementing a voting algorithm in order to tolerate the failure ofone sensor. Fault tree analysis (FTA) is employed as a tool for analyzing probability functions ofsuccess and failure for three possible voting algorithm configurations. Based on the obtained modeling, complex data of the studied system are transformed to accurate prediction of its reliability and unreliability. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Analyzing possible causes of imperfect paper production(2015-01-01); Onnom, ChaowalitThis paper presents an analysis of possible causes of nuisance tripping of paper machine effect to imperfect paper production. The possible causes of the focused paper machine failure are paper thickness, paper type, sensor configuration, and sensor placement. Experiment procedures based on analysis of variance (ANOVA) are designed to test the interesting causes. Analysis result can be useful for minimizing the imperfect paper production. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A step-up/step-down SC DC-DC converter and its power saving techniques(2013-09-02); ;