Applied Mechanics and Materials Vols. 143-144

Abstract: This paper present intrusion detection on hybrid gene expression programming (ID-HGEP), which combined theory of attribution reduction in rough set to improve precision and efficiency on intrusion detection. Through extensive experiments on high dimension data sets, it is shown that ID-HGEP is apparently more advantageous in terms of convergence speed, intrusion detection efficiency and average consumptive time in contrast with traditional intrusion detection algorithm on GEP.

Abstract: An analysis of a desalination process with new thermal storage utilizing solar energy is presented in this paper. An experiment for performance test of low temperature plate-fin thermal storage is developed, the performance of the thermal storage and release of thermal storage is investigated in detail.

Abstract: Coal mine rescue capsules, whose structural strength defines miners' safety directly, are becoming important equipments for miners' underground escaping. In order to improve the rescue capsule's strength, in this study the finite element model was established in ABAQUS environment, and the influence on rescue capsule made by the pressure of gas explosion was obtained by using explicit integration method. The maximum stress of rescue capsule appears at the corner where it has stress singularity and the central part of the stiffeners where the stress reached the yield strength. But the overall stress is within the allowable range.

Abstract: According to the status of higher knowledge threshold that is set up for designer by CAE technique, establishing knowledgebase of active knowledge aided system of software to furnish designers appropriate design knowledge and experiences for reducing higher knowledge threshold of CAE and lightening the learning burden of designers. System takes the example of the analytical design of automobile parts in CAE software to realize rapid application of sophisticated CAE and debase the cost of design.

Abstract: Based on finite element pre-processing software HyperMesh and SimLab, the finite element model of a four-cylinder diesel engine block was built, the characteristics of the two meshing tools were also be described. Using inhere free modal frequencies and shapes as evaluation indexes, the influences of cylinder block modeling methods were studied. By using HyperMesh combined with SimLab, an efficiency mesh generation method of cylinder block was proposed. This mesh generation method can also be used in the modeling of other complex parts.

Abstract: Micro-Opto-Electro-Mechanical System (MOEMS) has the advantages of small size, light weight, little energy consumption, high reliability, high-volume production and so on. Micro-sensor is a new generation of sensor being developed, improved and expanded, and it will have a huge effect on the measurement area of still adopted traditional sensors. The characteristics and MOEMS manufacturing technologies are introduced. The concept and advantages of micro-sensors are described. The working principle of micro-accelerometer is analyzed.Micro-accelerometer will play an increasingly key role in the new monitoring and control equipments.Pole coupling is the key issue of micro-accelerometer to be resolved, but the rapid developing signal processing technology can provide new solutions to it.

Abstract: We found the dynamic behavior of detected signals by MOEMS three-component acceleration seismic geophone has nonlinear, time-variation, multi-variable and strong-coupled. We proposed a method used a multivariable fuzzy-neural net work decoupling controller, designed and simulated the corresponding decoupling scheme. The results show that this method is stable and reliable, giving some help to the development of three-component acceleration seismic geophone.

Abstract: New progress of research on the preparation technique of micro gas sensors of metal oxide semiconductors is introduced, such as the chemical treatment of the gas sensing film, the deposited technique of gas sensing film in the oxygen radical assisted EB evaporation, the technique of the multilayered film, the fabrication technique of the thermally oxidized, the technique of the electrode configuration, the fabrication technique of the miniaturized arrays by micro-molding in capillaries, the dip-coating of the sol-gel. And their features will be analyzed respectively, and their existing problems and future development directions will be given.

Abstract: Temperature modulation has been proved to be an efficient technique for improving the selectivity and stability of gas sensors. Recent years, there are many reports about it. This paper detailed analysis of the technology and reviewed the methods of temperature modulation, the techniques of dynamic signal processing, the optimization of modulation modes, and dynamic modeling of the responses. Then discusses the research trends of the technology.

Abstract: In the paper we put forward a design about electronic scale based on STC89C52,which includes data acquisition circuit, control system circuit, LCM1602 liquid crystal display circuit, buttons calibration circuit, alarm circuit and serial interface communication circuit. Meantime we develop the AD conversion program, numerical conversion program, display drivers program, EEPROM memory reading and writing program, buttons calibration program, and the writing of online control program. Then we realize the design of multi-function electronic scale and present the improved scheme. Finally system tests show that the system performance is stable, it can accurately calibrate to zero, system alarm function is good, and online control function is steady.