Applied Mechanics and Materials Vols. 427-429

Abstract: In this paper, a new TIGBT device with Hole Bypass Emitter was proposed. Compared with traditional TIGBT, the new structure introduce a P+ hole bypass region under trench metal emitter. Simulation results by SILVACO show that the new structure suppress latch-up effectively and allow wider Safe Operation Area (SOA) as well as higher security current without latch-up and have better temperature stability. In addition, all the impurity implantations in this structure need no extra mask, it is very convenient for fabrication.

Abstract: In this paper, an adaptive control scheme is presented for the desynchronization of a neuronal population based on LaSalle invariant principle. This control can asymptotically stabilize the mean field of the popolation at a fixed point to achieve desynchronization. A realistic model described by Hindmarsh-Rose equations is chosen as our example. The simulation results demonstrate the effectiveness of the proposed control scheme.

Abstract: In a mass spectrometer, the main function of the sample introduction system is to inject the sample, whose accuracy and reliability affect the efficiency of ionizing directly, and then influence the results. Considering this, the six-dimensional control platform based on stepper motor is proposed, improving accuracy of DAPCI ion source greatly.

Abstract: The system aims to collect reliable emission data in real time, provide the operator with real-time emission parameters, and guide the optimization of unit operation and control of pollutants in flue gas emissions. One kind of continuous emission monitoring system is designed based on PROFIBUS-DP protocol in power plant, the architecture of system is presented and the principle is described in detail.

Abstract: In this paper, it applies Gaussian loss function instead of ε-insensitive loss function in a standard SVRM to devise a new model and a new type of support vector classification machine whose optimization problem is easier to solve and has conducted effective test on open data set in order to apply the new algorithm to environment monitoring in water culture plants and the monitoring result is better than any other method available.

Abstract: In this paper, introduces a crossroads two-way intelligent traffic light control system based on the virtual instrument technology. The programming language Laboratory Virtual Instrumentation Engineering Workbench (LabVIEW) is used and the NI Educational Laboratory Virtual Instrumentation Suite II (NI ELVIS II) platform is chosen as target device in designing this control system. The control kernel of the system is LabVIEW program, it can realize lots of functions, such as adjusting the passing time in all directions and the duration of the yellow light, passing time count down and treatment of abnormal traffic. The experiment proves, NI ELVIS II platform than traditional experimental teaching equipment more innovative, flexibility and practicality, be helpful for students in the field of innovation ability training.

Abstract: Nowadays the widest used classification of power load is based on the industry they belonged to, but, as low voltage loads are varietal, even the loads in the same industry can be considerably different in load characteristics of them. In this paper, power loads are classified according to three load characteristic indicators: load averages, load changing cycle and the peak-valley ratio, which are based on the typical daily load curve of them. In this method, the typical daily load curves of loads in the same type are relatively more similar, which is in favor of further study using daily load curve. In this paper, thousands of 10kV loads in shanghai have been classified into 8 types in the method, and the analysis of the load types have been presented.

Abstract: Distributed Generation (DG) can be used to improve power quality, power supply reliability and reduce network loss et. Meanwhile Particle Swarm Optimization algorithm (PSO) is easy to fall into the local minimum. In this paper we propose a Cloud Adaptive Particle Swarm Optimization algorithm (CAPSO) to optimize the site and size of DG based on cloud model which has a tendency and randomness property. Judged by two dynamic value assessment, particle belongs to which group, excellent, general and poor. The inertia weight in general group is adaptively varied depending on X-conditional cloud generation. Taking the minimum network loss as the objective function, simulation on the IEEE 33BUS distribution systems to validate the methodology. Analysis and simulations indicate that it has good convergence speed and exactness.

Abstract: One of the longstanding problems in planar inverted F antenna (PIFA) is its efficiency, which reduces as PIFA is placed too close to the ground. In this paper a kind of mushroom-like Electromagnetic band gap (EBG) structure with three conductor layers is designed In the UHF band, which has smaller unit cells and thinner thickness compared to classical ones. This kind of mushroom-like EBG structure is used as the reflector of PIFA with capacitor structure. It is demonstrated that PIFAs with EBG grounds have higher radiation efficiency than those with PEC ground. At the same time, no significant changes in the antenna resonance frequency and the radiation patterns are found. The theoretical prediction is well verified by results of both simulation and experiment.

Abstract: In this paper, the robust trajectory tracking problem has been addressed for nonholonomic wheeled mobile robots with dynamic uncertainties, disturbance and actuator constraints. control theory, LMI theory and principle of MPC are utilized to design robust tracking controller. Simulation is performed to highlight the effectiveness of the proposed control law.