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Star Redundant System for Visible Light Communication |
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Vittaya Tipsuwanporn, Pokpoom Chanthosot, Arjin Numsomran(King Mongkut's Institute of Technology Ladkrabang, Thailand) |
| Visible Light Communication (VLC) for indoor use equipped with a Star redundant system, using LED (light emitting diode) light bulbs and photodiodes as data receivers and transmitters, respectively, was developed in this research. The data for the transmission experiment was in a text files format encoded with the Manchester algorithm. White-light LEDs were used. This system was tested with three types of photodiodes namely VBPW24R, FDS10X10, and OSD100-E. The data was backed up with 3 redundant control sets of LED modules. Arduino UNO R3 microcontroller was used in a case that one module is d |
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A Retrofitting Concept for Integration of Machinery with Legacy Interfaces into Cloud Manufacturing Architectures |
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Christian Horn(Technische Universität Berlin, Germany), Jörg Krüger(Fraunhofer IPK, Germany) |
| A Retrofitting Concept for Integration of Machinery with Legacy Interfaces into Cloud Manufacturing Architectures
Christian Horn, Jörg Krüger (Technische Universität Berlin, Germany)
The concatenation of machinery for assembly lines can be implemented efficiently, inexpensively and sustainably through cloud-based control services (CBS). Concepts for CBS and their value-added-services are current state of research. Focus of this work is an industrial grade and application-oriented connection concept for machinery with legacy communication interfaces... |
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Real-Time Monitoring and Reporting Alarm System for pH Measurement in Wet Scrubbers |
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Thipichpon Promsawat, Sart Kummool, Sawai Pongswatd(King Mongkut’s Institute of Technology Ladkrabang, Thailand), Amphawan Julsereewong(King Mongkut's Institute of Technology Ladkrabang, Thailand) |
| In order to improve a maintenance of wet scrubber operation for achieving harmful and polluting gas removal efficiency at a latex glove manufacturer in Thailand, this paper presents a technique to implement the real-time monitoring and reporting alarm system for pH measurement in wet scrubbers. All pH meter outputs are applied to an existing programmable logic controller (PLC) slave located on the master-slave network for production line control. A PLC master is communicated to an operator workstation running the supervisory control and data acquisition (SCADA) software. |
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Robust Repetitive Control with Feedforward Scheme for Stand-Alone Inverter |
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Wiboon Sintanavevong, Sudchai Boonto, Sumate Naetiladdanon(King Mongkut's University of Technology Thonburi, Thailand) |
| This paper proposes the combining of mu-synthesis robust repetitive control and feedforward control scheme to the design of constant sinusoidal voltage tracking for a stand-alone three-phase constant voltage inverter. The controller designed problem is defined in the form of two-degree-of-freedom feedback-feedforward controller. The D-K iterative algorithm is used to solve for both parts of the controller in one procedure to get the optimal controller. The proposed control scheme inherits the advantage of the robust repetitive control but does better in tracking performance. |
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Lyapunov Stability Criterion to Control Strategy with PI Controller of Doubly Fed Induction Generators in Variable-Speed of Wind Turbine Energy Conversion Optimization |
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Chamni Jaipradidtham(Kasem Bundit University, Thailand) |
| Abstract: This paper presents a control strategy of a variable-speed wind turbine, to obtain optimal PI controllers to the rotor side converter of doubly fed induction generators (DFIGs) for variable-speed driven by a wind turbine generation system connected to the electrical grid, to improve the stability of a power system which is derived from the stability criterion using an augmented Lyapunov functional method, the proposed method waives this requirement by introducing an augmented term, which has zero value and zero derivative, and the transient energy function method is used to derive t |
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