Applied Mechanics and Materials Vols. 110-116

Abstract: In this paper it has made study on long time-delay network control system which is greater than one sampling period, it has made modeling on sensor node time drive, controller node and actuator node event-driven system The special question has been considered which was brought more than one sampling period delay, the fuzzy control logic has been applied in MATLAB to design an adaptive Fuzzy controller, when the network time delay changes the controller parameters can be adjusted dynamically, to make dynamic compensation on network time delay, and through simulation experiments to verify the algorithm effectiveness.

Abstract: The roll / ride trade-off is a long-standing challenge to vehicle dynamicists. Achieving better ride performance almost inevitably leads to increased roll of the vehicle. This roll motion, mostly induced by maneuvering, leads to undesirable handling characteristics and subsequently higher risk of rollover. This paper analyses the use of an Active Roll Control (ARC) system with a Fuzzy Logic Controller (FLC) for improving the handling without sacrificing the ride comfort. The logic for reducing the roll angle of the vehicle is to have some forces exerted by linear actuators on the suspension system, depending on the velocity and steering angle of the vehicle. These forces create a moment about the roll axis which decreases the roll angle. The proposed Fuzzy logic controller is a feedback controller which outputs the correcting roll moment about the roll axis. The effects of employing such a control system are evaluated through computer simulation. Torsional stiffness of the chassis is then taken into consideration to account for unique properties of large-size vehicles. Simulation results with Fuzzy logic controller are very promising and show that the roll performance is significantly improved compared to the vehicle without ARC.

Abstract: In manufacturing industry, engineering drawing is used to facilitate the process of designing a product. In real situations, engineering drawing is usually in large quantities and not in order. In the process of designing a product, it produced many drawing. This paper describes a research and development of an extraction technique in the field of engineering drawing. Non-geometry information that will be emphasis in this research is version number.

Abstract: aximum coverage location problem is considered in this study. Extension of this problem is investigated for situations that coverage areas are elliptical; these ellipses can locate anywhere on the plane with any angle. Mixed integer nonlinear programming (MINLP) is applied for formulation. This problem can be used in many practical situations such as locating wireless transmitter towers. A heuristic algorithm named MCLPEA for solving this problem was designed. This algorithm can produce very good results in efficient running time. Finally, the comparison of the results for this study was carried done.

Abstract: Korean products can continue to dominate the market, this paper describes the style and characteristics of South Korean goods, analyses the main reason why Korean products can be so fashionable throughout the world by going through Korean products’ design from three aspects, harmonization design, reasonable man-machine, and humanization design , at the same time, it points out the secret of South Korea's design’s leading position from its cultural connotation and scientific and technological content.

Abstract: The thesis based on a car engine plant, analyzing the promotion for the introduction of JIT quality control system. Compare the Simultaneous engineering method with traditional JIT quality control method in terms of quality control. Analysis shows that the accumulate material waste ratio during the production process has decreased significantly by using the Simultaneous engineering method.Keywords-component; formatting; style; styling; insert (key words)

Abstract: Among the car accident casualties, Pedestrian occupied a large proportion of the injuries. Pedestrian protection became a key problem of vehicle safety. The engine hood was the most possible zone impacted by the head of pedestrian. The pedestrian protection of engine hood was an important performance of vehicle. The active engine hood was used to improve the pedestrian protection performance of vehicle and to meet the regulations. In the lifting system of active engine hood, springs were used to improve the pedestrian protection performance. A design optimization method about the spring stiffness used in active engine hood was developed in this research. The spring stiffness of K was set as design variable, and its interval was set 1~50 N/mm. The impacting zones of engine hood where HIC values of original engine hood were higher than the mean values of corresponding child and adult zones were selected as the cases of optimization. The objective was to minimize the sum of HIC values of those selected zones. The first type of constraints was that the HIC values of child zones were less than the mean HIC value of child zones. The second type of constraints was that the HIC values of adult zones were less than the mean HIC value of adult zones. The spring stiffness optimization model about active hood based on pedestrian protection was constructed and solved. The results of optimization indicated that the obtained spring stiffness by this method improved the pedestrian protection performance of engine hood.

Abstract: Based on pyroelectric infrared sensor working principle, the passive pyroelectric infrared alarm system is designed, which is mainly used for safety of residence house to detect whether outsiders enter or not. This system is made of pyroelectric infrared sensor, Fresnel lens and monitoring circuits. The concealment of infrared is well applied on the circuits , amplifying and filtering circuit , infrared signal processing circuit are designed, then the voice chip is utilized to simulate alarm voice for warning thieves and burglars .After many experiments, This system has sensitive response , high anti-interference ability and safe and reliable performance.

Abstract: The resonant frequency of flexural vibrations for an atomic force microscope (AFM) cantilever has been investigated using the Euler-Bernoulli beam theory. The results show that for flexural vibration the frequency is sensitive to the contact position, the first frequency is sensitive only to the lower contact stiffness, but high order modes are sensitive in a larger range of contact stiffness. By increasing the height H, for a limited range of contact stiffness the sensitivity to the contact stiffness increases. This sensitivity controls the image contrast, or image quality. Furthermore, by increasing the angle between the cantilever and sample surface, the frequency decreases.

Abstract: The primal purpose of this paper is twofold: to ascertain the facts for product design for remanufacturing and to quantitative assess the product design method. This first requires an analysis of product design that facilitates remanufacture. Insights on how to design products for ease of remanufacture were obtained from lots of details of the whole remanufacture process. Furthermore, comparing design for remanufacturing to classic design-for-x indicated that they have some similarities and conflicts. And a further assessment model and method based on the remanufacturing process were put forward, which comprehensive quantitative assess product design for remanufacturing. Finally, we conclude that it is important that the design requirements explicitly address remanufacturing process, and the evaluation model have enough potential to justify products design for remanufacturing.