Advanced Materials Research Vols. 971-973

Abstract: In order to study the relationship between pedestrian fatality risk and impact speed in domestic pedestrian traffic accidents. According to the frontal shapes of domestic vehicles, this paper divided the vehicle types into long head car, short head car and flat car. Used in-depth accident study method to collect a large number of actual traffic accidents cases. The logistic regression models of pedestrian fatality risk and impact speed of long head car, short head car and flat car were established. The Wald Chi-Square test was used to validate the accuracy of the model. The results shows: The long head car corresponds to the lowest pedestrian fatality risk, the flat car corresponds to the highest values. Compared with developed countries, the developed emergency and medical care play an important role in reducing the pedestrian fatality risk.

Abstract: Aiming at the applications of smart home, a novel intelligent remote control switch socket based on Wifi and PLC technologies was described and designed to replace the traditional wired sppliances.The intelligent remote control switch socket using Wifi and PLC communication technologies, compared to the existing technology solutions, which has the advantages of more flexible networking, low cost, easy to implement and promotion, etc..It will provide an intelligent switch socket design idea and method for the development and promotion of smart home system .

Abstract: For the current situation and deficiency of the enterprise material management system: huge material data, species diversity, single management means, management behavior is not standard, people involved in most materials management activities, materials management standards is not unique, materiel maintenance and resource sharing is difficult, and so on.

Abstract: Taking crop Acoustic emission (AE) signals as the main monitoring index for plant diseases or dehydration, the crop AE wireless sensor network monitoring system was established based on DSP and ZigBee network. Crop AE signals were conducted on A/D transformation and data processing and then sent to the monitoring center based on wireless communication module SZ05. AE signals received at the monitoring center were demonstrated in waveform display. Based on the variation of AE signal’s frequency the system can diagnose disease and prevent dehydration for crops.

Abstract: Based on kansei engineering theory, with mobile phone model as the research object, on the speciation analysis of deconstruction, study of the correlation between form design elements and subjective feeling. To obtain mobile phone simulation modeling samples by the concept of orthogonal test. Through collecting a large number of perceptual image vocabulary, the multiple scale method, class cluster method was applied to typical filtered emotional vocabulary, as the shape of subjective evaluation metrics. Using the mobile phone modeling sample obtained from the screened and representative emotional semantic difference experiment on the emotional reactions of vocabulary, get the corresponding relation between mobile phones form design elements and subjective evaluation value. Quantitative fuzzy uncertainty of emotional problem, and using kansei engineering theory to improve product that cares consumers emotional has become the direction of product design.

Abstract: This paper presents blind source separation of rolling bearing based on particle swarm optimization. The algorithm combines the advantages of both blind source separation and particle swarm optimization. Through the experiment it is shown that the algorithm can separate the signals collected from rolling bearing and gearbox effectively, which can provide a new method for fault diagnosis and signal processing of machinery equipment.

Abstract: To the question of the water level control of the underground drainage control system such as multi variables, tight coupling, nonlinear, and it was difficult to modulate precisely, the subsection control based on predictive model strategy of the pumps was proposed. The control rules were determined by analyzing the error which contain the predicted value for ensuring the stability of water level. Simulation shows that the algorithm is feasible, control system response time shortened, over regulation measurement greatly reduced, fluctuation time decreased and control system has strong adaptability and good stability.

Abstract: Through the analysis of Permanent Magnet Synchronous Motor (PMSM) servo system, this paper is aimed to deduce the transfer function model of position output caused by the disturbance input, using the Matlab software for simulation calculation, and to analyze the change of the Bode diagram of the disturbance model when the control system parameter value changes. In addition, based on the analysis, the paper will identify the influence law of the external disturbance at different frequencies on the system servo stiffness. The simulation and analysis will show that adjusting the certain control system parameters can improve the system servo stiffness at different frequencies of the external disturbance.

Abstract: This paper proposes delay-dependent stability conditions of discrete-time networked control systems (NCSs) with unknown, time-varying and bounded delays using Lyapunov-Krasovskii functional and the improved free-weighting matrix approach. Moreover, the conditions are extended to the NCSs with time-varying structured uncertainties.

Abstract: Vessel collision prevention issue has always been the focus of the nautical science research. This paper considers a variety of factors that affect the safety of the ship collision avoidance to optimize the research on multi-boat collision avoidance magnitude, by using the improved collision risk index model and simulated annealing particle swarm optimization. The result of the simulation indicates that SAPSO can deal with the problems of angle of avoiding collision, results are accurate and feasible.