Multi-agent systems (MAS) are used to increase flexibility and reliability of automated production plants, by reducing their control structure's rigidness through the use of autonomous, interacting software agents...
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ISBN:
(纸本)9781467347372;9781467347358
Multi-agent systems (MAS) are used to increase flexibility and reliability of automated production plants, by reducing their control structure's rigidness through the use of autonomous, interacting software agents. This paper comprises a concept for MAS, which are implemented partly on the Manufacturing Execution systems (MES)-layer and partly on the field device layer, trying to combine the advantages found in other works that used MAS on only one of these layers. The concept contains a software architecture, a communication structure between different runtime platforms (MES and field devices) and processes, including an adaptive path finding algorithm. An evaluation showed that the proposed MAS is comparable in production performance, while increasing fault tolerance compared to a static legacy implementation.
By using Gaines and Mawhin's continuation theorem of coincidence degree theory, we studied the global existence of positive periodic solutions of a predator-prey diffusive model with ratio-dependence and feedback ...
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Household robots are widely popular with families for their interestingness. Based on the principle of tumbler, we have developed a novel household robot named Wawa (in the meaning of baby). This robot can be used for...
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The electrical characteristic test of nanowires is important in nano-materials research. The metal-semiconductor junction that is fabricated with semiconductor nanowire and metal probe in electrical test system has im...
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The characteristics of reacting radicals in a flame are crucial for an in-depth understanding of the formation process of combustion emissions. This paper presents an algorithm for the prediction of NOx (NO and NO2) e...
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With the development of smart grid, the amount of condition monitoring data would be huge and far beyond the scope of traditional condition monitoring system. Condition monitoring data has the features of the wide are...
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A light-emitting diode (LED) light bar for display monitor may be composed from thousands feasible LED combinations due to supplies of LED bins featured by voltage, illumination, and chromaticity. To control inventory...
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ISBN:
(纸本)9781467329453
A light-emitting diode (LED) light bar for display monitor may be composed from thousands feasible LED combinations due to supplies of LED bins featured by voltage, illumination, and chromaticity. To control inventory levels by bins, this work proposes a novel multi-level linear programming based system capable of maximizing LEDs allocations of light bar work orders. Filtering from feasible LED combinations by the control table based operations, the target LED bins enable solving of each programming model by levels efficiently. A case study in the TFT-LCD industry demonstrates that the proposed system can control inventory levels of the remaining LED bins and reduce more than 70% of the original computational loads, allowing allocation of LEDs for work orders in mean 1.73 min.
A super heater is a device that is used to convert wet, saturated steam into dry steam. Dry steam at 538oC contains more thermal energy. It increases the overall efficiency of the cycle. The Modelling of the Super hea...
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A Z-source inverter with a customized modified reference (sine) based pulse width modulation technique is proposed for energy conversion systems. In this system six reference waves and one carrier wave is used to gene...
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ISBN:
(纸本)9781467346344;9781467346337
A Z-source inverter with a customized modified reference (sine) based pulse width modulation technique is proposed for energy conversion systems. In this system six reference waves and one carrier wave is used to generate switching pulses. The purpose of this paper is to demonstrate that the Z-source inverter will boost the AC voltage whenever required, and perform minimum output distortion with maximum tracking and interface it with the renewable energy system. The control method is analysed with simulation and experimental results. Also the control method is implemented in DSC (TMS320F28335).
Power system stabilizers (PSSs) are used to enhance damping of electromechanical oscillations occurring in power systems after small or large disturbances. PSSs designed by classical control methods have been widely u...
Power system stabilizers (PSSs) are used to enhance damping of electromechanical oscillations occurring in power systems after small or large disturbances. PSSs designed by classical control methods have been widely used to accomplish this task. In this study, a new method based on big bang-big crunch algorithm is proposed to optimize the parameters of PSSs with a conventional structure in order to stabilize the system and to increase damping of this type of oscillations. The success of the proposed method is demonstrated on a two-area test system through simulations in which both local and inter-area oscillations are effectively damped.
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