Applied Mechanics and Materials Vols. 321-324

Abstract: Simulation of the 3D temperature field of the organism as the arterial tree is taken as a heat source is an accurate way to calculate the bio-heat transfer. Based on the corrosion casts of real arterial tree of human tongue, a vessel model tree is grown by a stepwise method. Firstly, the profunda lingual artery and the branches of first level were constructed by statistical rule. And then else arteries were modeled based on physical laws and optimization criterion. The arterial tree of human tongue formed by the stepwise method is compared with the corrosion cast of real arterial tree. Result shows that this arterial model tree is in good agreement with the actual structure of arterial tree of human tongue. This method can substitute the vessel cast experiment, and can create arterial trees with different configuration which is the basis to research the process of heat transfer of organism deeply.

Abstract: In this paper, we present an algorithm for reconstruction of B-spline surface such that it interpolates the four given boundary curves and the cross-boundary derivatives meanwhile approximates some given inner points. The main idea of our method is: first, we construct an initial surface which interpolates the four given boundary curves and the cross-boundary derivatives on them with minimizing the energy; then, while keeping the boundary control points of the initial surface unchanged, we reposition the inner control points of the surface such that it approximates the inner points with optimization. Examples show that our algorithm is practicable and effective.

Abstract: Independent components analysis (ICA) with constraint of seismic wavelet estimated from bispectrum of seismic traces is combined with short time Fourier transforms (STFT) to improve the traditional frequency domain seismic deconvolution. Neglecting noise, the seismic record is changed from time domain to frequency domain with STFT in order to transform the common seismic model to the basic ICA model. By applying FastICA algorithm with constraint of seismic wavelet estimated from bispectrum of seismic traces, reflectivity series and the seismic wavelet can be produced in frequency domain and changed back to the time domain subsequently. The model and real seismic data numerical examples all show the algorithm valid.

Abstract: The punching process with CNC is getting more and more important in the modern metal stamping field. But it is still difficult to realize NC punching the Chinese characters in manufacturing. Furthermore, it is expensive for processing forms of Chinese characters like thread cutting, laser cutting, etc. In addition, the ability to process the characters in a large size is restricted by the efficiency and the size of the machine. Therefore, this paper shows the details about programmable automation which is used in the characters processing on CNC punching machine. The content includes: getting the font parameter of character from DXF file, building the curve function for contour of characters, and creating G code for NC punching process. This technic provides a new method on processing big-size Chinese characters. And this technology can improve the efficiency and precision, and reduce the distortion of contour gotten by traditional program.

Abstract: With growth of Urban Road Traffic Volume and the increase of Road Network Density, correlation between adjacent road intersections is becoming more and more obvious. An intersection traffic signal adjustment tends to affect the health of a number of adjacent intersections road traffic flow. Its congestion may over time gradually spread to within a few blocks and regions all around the intersection. Therefore increasingly high demands of urban traffic signal control make a variety of advanced control technology integration, achieve the purpose to adjust a control parameter, in order to achieve dynamic coordination within the city - wide traffic control, to satisfy traffic demands, and then let the road traffic and the transport demand make a new balance. And This article introduces is the use of the green wave effect collaborative strategies adjacent green extension of fuzzy control in order to solve the problem of coupling between intersections road. This algorithm makes Signal Timing to be more flexible.

Abstract: The flexible overall hoisting technique is put forward for the construction of the 30000m2 COMAC roof which is made of solder ball grid structure. It is critical to study how to properly measure the four ropes length of each lifting point. Language tools use in AUTOCAD AUTOLISP appropriate programming has been an efficient tool to correctly output the length of the rope. This method can provide some experiences to the construction and fabrication of the steel member of the project.

Abstract: For the characteristics of control system for ceramic kiln, a new high-reliability control system is presented in this paper, using a hierarchical configuration, the DCS control system for three subsystem is designed, The temperature and atmosphere of kiln are controlled by fuel metering and air fuel ratio with computer and PLC, the structure and software design of the system are introduced, It is an advanced control technology. It’s validity is verified in a practical kiln monitor and control system. This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text.

Abstract: A novel sliding mode controller based on Takagi and Sugeno (T-S) fuzzy system model and optimal reaching law is presented to design the output tracking controller for the nonlinear system. The T-S fuzzy logic theory is used to build a global fuzzy state-space linear model, the sliding surface is defined by using pole assignment method, and the optimal switch control law which can drive the state variables to the sliding surface as soon as possible is designed under the condition of minimizing the defined cost function. The gains of optimal switch control law designed by using fuzzy logic algorithm alleviate the chattering phenomenon. Lyapunov equation is applied to prove the stability of controlled system. The simulation results show that the proposed approach can achieve nonlinear trajectory tracking with better performance and less chattering problem.

Abstract: This study focus on α-Stability constraints for uncertain networked control systems (NCSs) subject to disturbance inputs, where the network transmission is connected with time-delay and packet dropout. The overall NCSs model is derived. In order to obtain much less conservative results, the sufficient condition for feasibility is presented in term of 2nd Lyapunov stability theory and a set of linear matrix inequalities (LMIs). This LMI approach can be the optimization problem of computation of the maximal allowed bound on the time-delay for NCSs.

Abstract: As the stability of quality of hot mixed asphalt mixture (including gradation, asphalt aggregate ratio, temperature, etc) is the premise of good pavement performance of asphalt pavement, it is regarded the key of ensuring service life and pavement performance of road to ensure the quality of hot mixed asphalt mixture. This research is oriented at developing real-time quality control & monitoring system of asphalt mixture further on the basis of the established quality control system of mixing plant. The functions and operating principles of the system are introduced in this article.