Applied Mechanics and Materials Vol. 340

Abstract: With the purpose to stimulate the technical development and to seek the new growth points in economy, governments of different countries attach great importance to the technical programming of the new generation, giving priority to the internet of things. It is also stated in the twelfth five-year-plan outline for national economic and social development of the People's Republic of China that the national infrastructure should develop with the safety of broadband blending to push the application of the internet of things.

Abstract: To compare and analyze the traffic operation status of each section and intersection in the test road network, the paper applies a combination of the analytic hierarchy process (AHP) and grey comprehensive evaluation model. Firstly obtained the evaluation indexes grey correlation matrix of contrast section (intersection) and the reference sequence according to the grey system theory, then used AHP to determine the weight of each index, finally a conclusion is carried out based on the sort of the results of comprehensive evaluation vector, which is the plunge and exit point are the worst traffic situation intersections, the section which connects the two intersections is the worst traffic condition section in the road network.

Abstract: With the speedy development of Auto-industry, CAN-BUS technology is becoming more and more mature day after day. This paper makes a study of the application of CAN-BUS technology in lighting control systems and failure finding model while making an analysis of the characteristics of the application of CAN-BUS technology in Auto-motive Network which paves way for the further studies of CAN-BUS technology.

Abstract: In order to investigate the system performance, its necessary to select an even background point target as the imaging object. The system realizes the real-time sampling, processing and displaying infrared image through joint debugging the SOPC processing system. SOPC is a flexible and effective SOC solution because of its flexibilities of system design, reduction, extension, upgrading, etc. And its hardware and software system are programmable. We present and develop a wireless video monitoring system based on SOPC in this paper, and the system benefits the production of infrared imaging sets of higher performance, lower power consumption and smaller size.

Abstract: Presently, with regard to the research in control of three-phase PWM-VSC under unbalanced dips, most of the literatures gain the current commands through the phase voltages based on the PQ power theory and the control flow is complicate too much. This paper, based on the instantaneous power analysis of VSC grid-side, calculate the current commands through line voltages and use the line voltages instead of the phase voltages in the feedforward. Not only the equation of current commands calculation is simplified, but also avoids the transformation of line voltages to phase voltages. In addition, this method adopts neither PLL nor coordinate transformation, and current sequential extraction is eliminated by adopting the PR controller in the current loop. In the end, the simulation results testify the efficiency of the proposed scheme in resisting grid voltage harmonics and nullifying fluctuation of dc-voltage.

Abstract: H loop-shaping control is an excellent strategy, in which control performance and closed-loop stability can be both guaranteed. To use the H loop-shaping control in the multiple model framework to develop a multiple model-based H loop-shaping control method, in which local linear model selection and local controller design are integrated in the multiple model dividing procedure. Therefore, local model redundancy can be avoided and controller structure can be simplified. Besides, desired local control performance and stability are guaranteed by shaping functions. A TITO process is studied. Closed-loop simulation demonstrates the effectiveness of the proposed multiple model-based H loop-shaping method.

Abstract: The development of the modern welfare state is not isolated; their welfare policy implementation depends on the advanced economy, extensive coverage, the perfect system, the diversification and welfare system mandatory. Social network analysis is just take this dependence into account, and develop corresponding method to deal with the relationship between variables. This paper, based on the p* model analysis, takes Sweden and Finland, two typical Nordic welfare state, as the examples, and finds the differences in disease disability insurance, unemployment insurance and etc. To understand these differences is of great importance to think about whether to conduct the reform of the welfare state, and how to combine the concrete national conditions with the reform.

Abstract: This paper evaluates the effectiveness of the group work based on the Cronbach α in order to know the effectiveness of the group works intervention in adolescents autogenesis by using SCCS (Self-Consistency and Congruence Scale) as a measuring tool for data collection. And SCCS can be divided into three subscales: disharmony between self-and experience, flexibility, and rigidity, and finally to get three sets of data, finding out the changes, and trying to explain and analyze them. The advantages and disadvantages of group works intervention in teenagers growing up could be found in this research.

Abstract: Vehicles with active suspension systems become more ride comfort and maneuverable stability, many types of active suspensions have been applied to passenger vehicles, but one of the shortcomings of an active susupension system is that the additional control power consumption is needed. The core issues of designing an active suspension system are to minimiaze vibration magnitute and control energy comsuption of the active suspension system. A new mathematic model for an active suspension system is established based on vehicle dynamics and modern control theory. An optimal control law is constructed through solving the Riccati equation, and then the transfer function is deduced to describe the relationship between the vetical velosity of the road roughness and the output of suspension system. Three typical parameters of vehicle ride comfort are researched, such as vertical acceleration of vehicle body, dynamic deflection of suspension system and dynamic deformation of tires. A case of a quarter vehicle model is studied by simulation to show that the proposed method of modeling and designing optimal controller are suitable to develop active suspension systems.

Abstract: Nowadays, the conversion of traffic lights is depends on fixed period way instead of the situation of the traffic. A very few areas which are using intelligent traffic lights haven't supply a systemic solution to intelligent traffic lights. The field of intelligent traffic lights is still a blank in the word. Using the technology of RFID and Internet of Things, the paper offers a systemic and particular solution to the control system of the intelligent traffic lights that is on the non-trunk and non-busy road.