In order to define the perceptual experience of the feeling features of various materials to users, and quantify the qualitative problem of product material texture, a range of adjectives were assessed quantitatively to describe the feeling features of materials, and a series of suitable sample pictures were conducted to show material texture. Considering physical and mental feelings of users, questionnaires were sent out which users could match these adjectives with samples. And then, using statistical analysis and comparative analysis to analyze the collected statistics, the descriptive words of the texture semantics of 8 different typical product materials are developed, so that designers can do property design and demand analysis accurately and rapidly, and communicate with engineers and sales effectively.

As a key component of machining center, the structural design of pillar impacts the mechanical properties and precision significantly. Aiming to improve the dynamic property of pillar and considering the performance requirements for static and dynamic stiffness of machining center, this article proposed optimal design scheme of pillar structure and gave the optimization model. The pillar was conducted topology optimization in Altair OptiStruct to achieve topology structure with high performance. Considering machinability, the pillar was simplified to be stiffened panel structure. Based on it, detailed design was obtained by combining genetic algorithm with APDL of ANSYS. Compared with original design, the pillar's dynamic stiffness has increased considerably, which shows the presented methods can provide theoretical guidance to structural design of the machining center．

The harmonic gear transmission device owns excellent characteristics and it has been used more and more widely in recent years. The reliability model of harmonic gear was established based on the failure mode while taking the various uncertain factors into consideration. According to the theory of reliability and optimal design, the reliability design and genetic algorithm were combined together to do the optimal design. According to stress\|strength interference theory, first\|order second\|moment method was employed to optimize the harmonic gear. Also, we analyzed the influence of design variables on the reliability of the structure using matrix differential technology, and that was the reliability of the sensitivity. The Monte Carlo method was used to verify the results. If the first and second moments are known, the optimal design information of the harmonic gear can be obtained quickly through the computer program. The numerical example shows that the proposed method is practical and effective．

In order to avoid establishing the tedious involute equation, and accurately get the non-involute tooth profile curve of the gear tooth root part namely the dedendum transition curve rather than just make an approximate treatment,meanwhile, effectively simulate the machining process of the gear contour,which can make the parameterized modeling of the gear more convenient and higher precision,the method was as follows: according to the principle of generating method about machining the gear and the simulation of the rack tool machining the gear as the basis,parameterizing the rack system, modifying curves generated by the profile points of the rack tool in Pro/E movement simulation, the accurate gear involute could be obtained. Then the establishment of the gear parametric 3D model was completed. This method can effectively simulate the machining process of the gear contour and realize the gear tooth profile drawn exactly,which avoids the bondage of the involute parameter equation and the programming language, and is novel, practical and easy-to-understand in 3D parametric gear design．

The electromagnetic energy leakage through aperture arrays which were often designed for controlling temperature of avionics was inevitable. The near-field shielding effectiveness must be analyzed when the distance between two avionics was short. The calculation of near-field shielding effectiveness by the HFSS and the other one by the transmission line method was compared. Both the theory analysis and numerical results indicated that the transmission line method was noneffective in the calculation of near-field shielding effectiveness. The effects of some parameters on near-field shielding effectiveness were analyzed thoroughly by the HFSS. Some means for improving near-field shielding effectiveness was presented．

The mechanized technology of knotting kelp is a difficult issue and hotspot without settling at present worldwide. The machine of knotting kelp was developed and could basically achieve the movement of knotting kelp.But the success rate of the knotting kelp was less than 99% which was the knotting efficiency that industrialized production required. In order to find kelp-knot principle of the machine and improve success rate of knotting kelp, the process of knotting kelp by the equipment was analyzed based on catenary theory.A mathematical model of a kelp line was established. And the solution of the catenary equations including a catenary with endpoints of the same height,a catenary with endpoints of different height and a catenary with restriction besides endpoints were put forward. It made a study of the kelp-knot principle by analysing the states of the kelp line in four different stages of the motion and projecting the kept line in space of each state on the same surface along a certain axis.The result turned out that the way the equipment knots the kelp meets the qualification of the method of twisting knot.It is proved that the method of knotting kelp is correct and feasible.It provides a theoretical guidance for improving success rate of knotting kelp.

Generally, the empirical equations are frequently used in the traditional design method of air intake system of engine auxiliary system, which leads to the results inaccuracy, sometimes big deviation exists between the empirical data and calculated data. Aiming at this difficult problem, a design method based on CFD (computational fluid dynamics) was proposed. After establishing the threedimensional model and meshing the intake system, RNG(renormalization-group) turbulence model was chosen to establish mathematical model of gas phase. Under some defined appropriate boundary conditions, the gas flow-field in air intake system was simulated by Fluent code. Additionally, in order to take the influence of air filter gauze, the structure of air filter was assumed to porous zone and the distribution of speed and pressures corresponding to the three methods were compared. And the air resistance was chosen as the testing criterion to evaluate the quality of this method. Results show that the second program, whose inlet resistance was least to be the best program. The method provides technological reference for the design of intake system．

Euramerican laws for emission of non-road spark-ignition small engines become more rigorous continuously. Now, the great difference among the nonroad spark-ignition small engines which is made in China of different batches has become the common technology problem in industry. The density of gas mixture exerts a tremendous influence on the emission of engine. Using developmental steady flow test rig for intake and exhaust system of non-road sparkignition small engines, testing the intake and exhaust port in cylinder head, air filter and analyzing the test data, it was gotten that the difference of the flow character about the intake-exhaust system and the product waviness of different batches was the main reason for the change of density of gas mixture and the difference of the emission performance. The result shows that intake and exhaust port of such engines using casting cylinder head are affected largely by the casting technique, and the flow coefficient is low, which makes the engine performance hard to be improved. Improving the flow character of the intake and exhaust system is an important way to optimize the engine performance.

The early warning airborne(EWA) is an important part of air warning detection. It is extraordinary important to plan the route for the EWA. Based on analyzing the differences of route planning for the EWA from other aerocrafts, this paper researched the static route planning for the EWA. Firstly, the static route planning for the EWA was divided into two phases according to the present EWA campaign application pattern and the important factors which influenced the performance of the EWA to surveil targets. Then, after respectively modeling each dominant factor which influenced each phase of route planning, some cost functions were formalized, and the steps and methods of each phase of route planning were designed. The modified algorithm based on particle swarm optimization (PSO) was applied to search the route. After simulating under the platform of Matlab, it is proved that the model of this paper designed could automatically plan the EWA route according to the situation of targets distribution．

The seismic response of long crossing transmission single tower and tower-line system were systematically studied to find the difference between single tower and tower-line system under multiple support excitation by time history analysis method. The response difference between the single tower and tower-line system was investigated through the max node displacement, torsion, axial force and the base shear force. The results show that the seismic response difference of the single tower and tower-line system is significant, and the difference is relative to the nodes location and apparent wave velocity. So for long crossing transmission tower the the coupling of the tower and line should be considered when it is modeled for seismic analysis under multiple support excitation, otherwise those results will be over\|safety or over-dangerous．

Aiming at diversity of the characteristic information and regularity during the service life in the tribological system, the tribological characteristic information system of gearbox selected as the object of study was established. Relationship and inherent mechanism between viscosity of lubricating oil and wear information were investigated experimentally through adopting the oil analysis method for the collected oil during the fatigue wear test of gears. The behaviors of wear debris and oil deterioration were studied at the testing life, the surface morphology and composition of wear debris were investigated by SEM and EDS. The results indicate that the increase of the viscosity of lubricating oil has similarity with that of the wear information, namely,these characteristic information have the time cumulative characteristics. At the three stage of run-in period, normal period and fault period, the viscosity of lubricating oil is affected synthetically by wear debris, oil deterioration, friction polymers and oil sludge, change of its viscosity and change of wear parameter have the good mapping relationship．

Most of the current brake inertia benches adopt DC motor drive and purely mechanical simulation method，and they have disadvantages of slow response, inertia adjustment difficulties, low simulation accuracy. To overcome these shortcomings, based on methods of the mechanical simulation and electric simulation combination and adopting the technology of the vector frequency conversion, an automobile brake inertia bench that can achieve fast response and stepless adjustment was designed. This paper describes the basic principle of the bench, the overall structure, technical parameters and the choice of AC motor. Finally, the bench was used in the test and verification, the results show that the inertia error of bench is far less than that specified in the vehicle brake bench performance test standards. This design greatly improve simulation accuracy, achieves the design requirements, and can be applied to practical production.

Aimed at the features of verticality control system, i.e., non-linearity, uncertainty and multivariable, the control system of rotary drilling rig verticality based on self-adaptive fuzzy control was proposed in order to establish a high-quality and high-efficiency system which could be simply described. Through the simulation and experiment, it shows that self-adaptive fuzzy control algorithm makes tracing error achieve the expected target in a short time, and this control system has an outstanding control results. This verified the feasibility and effectiveness of the self-adaptive fuzzy control arithmetic for the rotary drilling rig verticality control system．

In order to solve the problem that the the PKE(passive keyless enter) with a fixed-frequency used in mid-and-low end cars was interfered and broken easily, which led to the damage of anti-theft system and even the loss of cars, and in order to ensure the PKE can be used long and be expanded and upgraded in the future, a new, low power consumption and high reliability PKE was designed with the S3C2410 microprocessor which is based on ARM9 and the RF transceiver chip nRF905 which has the function of frequency modulation. As frequency-hopping communication technology was used in the system, the information would not be disturbed or blocked in the communication process, which increased the reliability of the system. With reasonable power-management module, the system power consumption was greatly reduced. Test shows that the new PKE can well meet the practical application.

In order to avoid children's furniture being useless after a period of age-time and leading to a waste of resource and space, through in-depth study of the sustainable children's furniture, the information about children's physical growing, psychological development and behavior ways was collected, and a systematic recognition of children furniture including the manufacture materials and processing technology was built. Finding breakthrough about sustainability on the basis of existing products and making design motion from as many as possible ways, at last the combined design came out. It will promote the design and production of the children's furniture in the future. 

〗To solve the deficiency in the tradition sofa customization, the 3DS MAX had been introduced into the development progress of sofa customization system. In an example, 3DS MAX was used to create models in the scene and MAX Script was used to write the user interface. User operationed the models in scene through the user interface controls. Customers' customization on the sofa's model, color, and material custom was realized, and space and tea table were assigned to sofa. Finally, user browsed customized effect by the animation. The result indicates that 3DS MAX and MAX Script using in the sofa customization system is feasible. It provides a new tool for furniture customization system．

To improve design efficiency and quality of sewing machine products, configuration product design method was proposed. Product development process based on configuration technology was presented, and componentization design method was analyzed. On the base of analytic hierarchy process and fuzzy comprehensive evaluation, component determination process was described. Then component was design by generation rules and modification rules. Finally, the application in the design of sewing machine shows the feasibility and validity of proposed method．