Advanced Materials Research Vols. 181-182

Abstract: Under the circumstances of global climate becoming warm, the development of tidal energy which is a reproducible clean energy attracts great attention.And the effective usage of developed tidal energy is the critical problem of developing the tidal energy.Presently, the utilization rate of tidal energy is improved mostly by changing water turbine’s structure, which is under research. And the refinement of already built tidal energy generating set is restricted by cost.The electronics and electric device of water turbine are designed by taking certain control strategy under the structure of water turbine unchanged. So the water turbine is run at maximum efficiency. And the tidal energy can be applied as far as possible. After experiment, the designed experimental device is up to the control requirements.

Abstract: Conventionally, partial redundancy is applied at frail or crucial parts in most control system. As for the significant occasion of the Olympics Opening and Closing Ceremony, any fault of the control system may result in immeasurable losses. In this paper, we focus on redundancy policies and introduce the realizing of two different redundancy systems: the basic whole redundancy system, and the Hetero-type whole redundancy system, viz. two different control kernels (the PLC and its corresponding software and network) used in the same system. These two redundancy control systems are implemented at examination place and the National Stadium individually. These control systems set a successful example of the redundancy system implemented in mechanical control system at important occasions. By analyzing and comparing the reliability of the two redundancy systems, we get the results that the Hetero-type whole redundancy system has higher reliability than the basic whole redundancy system.

Abstract: A new algorithm which is the average local best position is presented to replace the local best of the traditional velocity update rule. One particle can acquire more messages of the other particles to adjust is movement in this method. Integrating PSO algorithm with PID controller, the three parameters of the PID controller can be optimized, which has the features of simple structure, easy implementation and robust performance. The simulation shows the PID controller integrated with the improved PSO algorithm achieved a good performance.

Abstract: In this paper, An integrated framework is developed to handle uncertainty in short-term scheduling based on the idea of inference-based sensitivity analysis for MILP problems and the utilization of a branch and bound solution methodology. The proposed method leads to the determination of the importance of different parameters and the constraints on the objective function and the generation and evaluation of a set of alternative schedules given the variability of the uncertain parameters. The main advantage of the proposed method is that no substantial complexity is added compared with the solution of the deterministic case because the only additional required information is the dual information at the leaf nodes of the branch-and-bound tree. Two case studies are presented to highlight the information extracted by the proposed approach and the complexity involved compared with parametric programming studies.

Abstract: Chain fitness club is an important site for people’s fitness activities in China and with its increasing popularity, how to select rational sites and conduct scientific layout, it grows quite urgent. In order to give full play to the fitness club, the paper, intends to coordinate the site selection for national fitness and optimize its layout scientifically to meet the needs of the people maximally. This paper modeled the problem in that there are n residential areas (referred to as Collection), numbered from p 1, p 2, …, p n with their location coordinates known as p 1 (x 1, x 2) , p 2 (x 2, y 2) , …, p n (x n , y n ) respectively, and w i inhabitants. To establish m fitness clubs qi (uj , u j ), we assume residents in each district can have access to only one fitness club to do fitness exercise. The question is that how to plan and lay out the m fitness clubs enables the shortest total distance C for all residents’ reach to their fitness club. In this paper, the Location Model in Operational Research is employed to make an analytical study on this issue to establish the location model and meanwhile gives mathematical solutions to the model in detail.

Abstract: Design and implement a car license plate identification system with the applications of Viola and Jones algorithm. This algorithm which is based on the AdaBoost method is trained and optimized for the best performance using large database of car license plate images. The final license plate identification system obtained a cascade of classifiers consisting of 8 stages with 1310 Haar-like features. Once the license plates have sufficient visibility and there are no other objects similar to the plate in images, this system operates perfectly and shows high correct identification rate with low false positive rate. And as integral image allows the Haar-like features to be calculated very fast, the system also finished the identification rapidly.

Abstract: Middle-long load forecasting is an important issue for power system’s plan, investment and operation. In this paper, differential evolution algorithm is used to determine the weights of the Combined load forecasting models, which is combined with several single middle-long forecasting models. The experiment results point out that the proposed model’s performance is better than any single forecasting model. It also shows that differential evolution algorithm can choose the weights of combined forecasting model effectually.

Abstract: Nickel silicide/silicon/silica composite nanostructure, i.e., Ni31Si12/Si/SiO2, was synthesized successfully by a coevaporation method, using nickel formate and SiO powder as the source materials. The structure of product was characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDS), transmission electron microscopy (TEM) and high resolution transmission electron microscope (HRTEM). The results indicated that the product had a rod morphology, which consisted of three parts with different morphologies and crystallographic structures. The top of the rod was a polycrystalline nickel silicide (Ni31Si12) nanoball with average diameter of 100 nm; the middle part was a single-crystal Si short rod with average diameter of 80 nm; the bottom part was an amorphous silicon oxide nanowire with average diameter of 60 nm. A possible growth mechanism of the composite nanorod was briefly discussed

Abstract: For accessing data from different channel in UAV (unmanned aerial vehicle) immediately, a method for massive data and multichannel recorder system is introduced. The system hardware composition and functions are described in details. The software design of receiving program is given, including extended UART ports’ initialization and design of interruption scheme. And experiment result shows that the recorder not only record data from UAV successfully but also improve the way to hand the UAV data.

Abstract: UV curable 3-(trimethoxysilyl) propyl methacrylate MPTMS modified silica hybrid coating was prepared through sol-gel process from TEOS and MPTMS in acid medium for different ratios between TEOS and MPTMS. The structure of the hybrid coating and the formation of inorganic-organic hybrid networks were studied by FT-IR. It was found that the organic networks were formed by the polymerization of C=C bonds at 1638 cm-1. The influences of the photoinitiator content and the curing time on the curing degree of the mixture system were investigated. The results showed that the optimal photoinitiator content was 3%, and curing time was 180 s. The thermal stability of the UV cured coating was investigated by TG-DTA. The results showed that the contents of low-molecular compounds such as H2O, CH3OH, etc. were decreased in cured coatings with the increasing of the MPTMS concentration, thus significantly decreasing of the thermal weight-loss at temperature lower than 400°C.