Enterprises can completely recognize the entire industry， identify competitors and preempt the zenith of technology， based on a reasonable patent layout design. Patent map can reflect industry development， guide the search direction， and provide intelligence for patent layout， by making the relevant information systematic， explicit and showing them in pictures. From the view of patent layout combined with the method of patent map analysis， the process of patent layout design was simplified to four models and those were the collection model of patents information, the state model of enterprise development, the orientation model of competitor and the development model of technical potential. Through the research and analysis for every model， the enterprise can hold a profound status about its own strengths, the threats from competitions and the trend of the industry development， so that the managers can carry on patent layout design efficiently to improve selfcompetitiveness. This paper applied the method to an enterprise in the field of diamond tool and proved that it was practicable.

In current preparation of nanometersized hollow nickel spheres by nickel powdermixed spark erosion， ablative nickel droplets and small bubbles in the working liquid could not be fully integrated to form the hollow structure. The problem could be solved by adopting innovation design methods and knowledge base. According to the actual working condition， a substance-field model was settled and a variety of corresponding solutions were caught by searching multiple fields in the knowledge base. The solutions were evaluated and sorted by fuzzy evaluation method， then， the optimal solution was selected that replacing the original mechanical field with ultrasonic filed. Thus， preparation of nanometersized hollow nickel spheres by ultrasonic device was introduced， it could improve the quality and efficiency of preparation of hollow nickel spheres．

Demanding of the clinical laboratory instruments tending to be miniaturization and intellectualization， a new 3D automatic sampling system which occupied the instruments small space and could directly sample on the standard sample plate was designed. A precise positioning algorithm which was suitable for the automatic sampling system was built according to the relevant principles of geometry and kinematics. For further reducing the positioning error of the system， the number of drive pulses was calculated by the accumulator iterative algorithm. Based on the VS 2010 platform， the systems operating software was developed by using the multithreading technology. The results show that the system can quickly and accurately complete the sampling of the standard sample plate， and meet the need for miniaturization of the clinical testing equipments. The automatic sampling system may have a great market prospects．

To analyze the influence of deformation conditions on the critical damage factor of high strength ring chain, a basic research approach combine physical experiments with numerical simulation to search the critical damage factor was established. Several series of billet samples had been compressed on heat physical simulation machine under different deformation temperatures and strain rates， the true stressstrain data collected recorded the performance of simulations. Simulation results show that the maximum damage value appears on the outer edge of roundlink chain， and damage softening behavior is more sensitive to strain rate. A concept of damage sensitive rate was brought in and its values were calculated. The intersection of line fitted and horizontal axis were obtained as the fracture step and its relative maximum damage value was a critical damage factor. The critical damage value distribution recorded shows that it is not a constant but changes in a range of 0.15-0.54，and it is more sensitive to strain rate than temperature. We establish the variation of stresses amplitude of the plane chain during working and travel cumulative damage model by using improved rain flow and linear Miner fatigue cumulative damage， then calculates the plane chain broken itinerary number and time. The results show that the macro and micro theory is feasible to study the damage mechanism of the plow chain, and it has important significance to reflect the practical service condition and to predict the working life of the plow chain.

Topology optimization for multi-workstation turntable， which was frequently used in automatic assembly machine， was implemented by Optistruct package of Hyperworks software. The objective was to minimize the mass, and SIMP material interpolation method was employed， which was based on topology optimization theory. Comparison between static analysis results of original design and optimal reconstructed model showed that the mass of the optimized model was decreased，and got better stiffness， meanwhile， the local maximum stress of the reconstructed model had also been reduced. Numerical example proves that the method of topology optimization is effective for the optimal design of multiworkstation turntable．

A scientifically sound layout design was critically important for an aerospace manufacturing facility whose survival largely depended on low production costs and highquality products. The case of layout design of an integrated machining facility， which produces gears and housings for drive system on civil aeroengine， was taken as an example. Complying with the general principles for facility layout， with annual output of gears and housings， processing technic and area requirements for single process were taken as inputs for design， the basic layout plan was designed and optimized via hybrid genetic algorithm which was constructed by combining the genetic algorithm and simulated annealing algorithm. Meanwhile， the constraints of each processing unit， brought into being by the characteristics of each processing technics， were also considered， which was achieved by fixing specific function zones upon certain locations of a genetic string compulsively. When the optimization of a layout plan was finished， it was modeled based on Plant Simulation. And then the performance of the plan was comprehensively evaluated according to a few key performance factors， such as output rate， equipment utilization rate， storage of semifinished articles and robustness of production line. The results showed that the optimized layout could meet the output demands， the loads of key equipment were basically balanced and low level of storage of semifinished articles was maintained. Hence， the combined utilization of hybrid genetic optimization and discrete event simulation can make the effective ocular solution for production facility layout problems. Also， the advantages and disadvantages can be thoroughly assessed via the key performance factors which are obtained through discrete event simulation．

Using the multi-resolution analysis characteristics of wavelet， a function may be expressed by a sequence of spaces which are nested and constantly expanded， and a multi-resolution finite element space may be established. However， there are always couplings across scales in the multi-resolution finite element space. How to eliminate the couplings is still a problem which needed to be studied further. For the Euler beam， the decoupling wavelet bases and the corresponding wavelet element based on Hermite interpolation were developed to solve Euler beam problem by using the orthogonality between the vanishing moment of wavelet and polynomial. The decoupling wavelet bases may eliminate the couplings between the low resolution space and detail spaces and that among the detail spaces in different scales. Then an adaptive algorithm based on scaledecoupling was constructed. The numerical example verifies the effectiveness of the proposed method．

During the controlling of the ultraprecision maglev movement， the hysteresis existed in the iron core and the armature guide is an important reason of making it hard to control precisely. It is significant to study the law of the hysteresis characteristics nonlinear influence on the electromagnetic force and build its nonlinear model. Through studying the hysteresis characteristics influence on the airgap magnetic flux density in the maglev precision movement and analyzing the hysteresis modeling theory of the magnetic circuit with an air gap， the nonlinear electromagnetic force model including the JilesAtherton model was established and then its parameters were tested by the particle swarm optimization. Results show that the electromagnet hysteresis in the maglev precision movement should not be neglected. The airgap magnetic flux density calculated by the identified new model is more precise and closer to the measured value than that calculated by the traditional model. These results provide an important reference for improving control precision of the maglev precision movement．

Part strengths of complex mechanical products are influenced by many factors， relationships between part strengths and these influence factors are very complex， it is usually difficult to build analytical mathematic models for relationships between them， this brings many difficulties to identify strength design defects of complex mechanical products. Taking rzeppa constant velocity joint （RCVJ） as the research object， the contact stress between inside and outside channel of RCVJ was treated as a basis for determining strength of RCVJ， the historical design parameters for the previous design schemes were treated as dependent variables， the regression equations between contact stress and its influence factors were established， by analyzing regression equation， the influences of various factors on the strength of inside and outside channel were derived， the maximum fitting errors for various influence factors were also calculated from regression equations. Design parameters of new design schemes were introduced into regression equations, then the differences between the regression equation outputs and the design parameters were computed， by contrasting with the maximum fitting errors， the design defects on strength of RCVJ were identified， design quality and design efficiency were improved effectively．

Deviation of a strip is represented by the distance between the center of the strip and the center of a roll. For various asymmetrical factors in rolling process， the transverse symmetry of the strip width direction under the extreme pressure gradually lost. Accompanied with rapid transverse instability evolution， the center distance between the strip and roll will increase. Deviation of a strip in the hot rolling process is an important unsolved technical problem. It results in reduced productivity and in some extreme cases， leads to strip tearing and work roll injury. Due to the lack of tension control in strip tail rolling process， it is easy to produce deviation. For the strip deviation， the linear regression model between rolling force differences and the amount of deviation was established， so that the stable interval of rolling force difference was found. In the tail deviation process， the adjustment model of controlling the roll gap differences was proposed. Through the analysis of process conditions and operating data on the industrial scene， the tails of the rolling deviation F3, F4 rack deviation are more serious. Thus， the simulation based on F3, F4 rack is conducted using MATLAB software to validate the accuracy of this deviation model．

In order to investigate the dynamic characteristic of involute shearer walking mechanism and type Ⅲ pin gear, the model of numerical analysis for dynamic meshing were established based on ANSYS/LS_DYNA. The influence of traction resistance and walking velocity on the behaviors of dynamic meshing for walking mechanism was discussed， the variations of walking velocity fluctuation and mechanics of pitch line and tooth root in dynamic mesing for shearer walking mechanism were obtained. The contrast study shows that the traction resistance has a significant influence on the variations of walking velocity fluctuation and mechanics of pitch line and tooth root. The tooth surface stress is low at the time of the meshing point nearby pitch line， but the stress fluctuation in the process of meshing increases with the development of the traction resistance. The influence of the walking velocity on the duration of velocity fluctuation is considerable. With the raise of the walking velocity， the peak loads decrease first and then increase slightly， and the loads after the peak attenuate sharply．

As an advanced steel materials with high strength and toughness， the finite element analysis of expansion mechanics of the twinning induced plasticity（TWIP） steel expandable tube had not yet reported in the literature. In order to obtain the expansion process and the mechanical status after expansion of TWIP steel expandable tube， the theoretical expansion limit of different thickness of TWIP steel expandable casing and the influence of thickness to expansion， a mechanical model to analyze expandable casings expanding processes was built based on ANSYS finite element analysis technology. TWIP steel was considered to be a model object of expandable casing， and the expansion process of different thickness of 219075 mm solid expandable tube was analyzed at various expansion rates at 25 ℃. The result shows that thickness does not have remarkable effect on the distribution of the maximum equivalent stress of the casing before and after expansion. The residual stress of different thickness of expandable casing after expansion along the axial distribution is basically same. The peak value of residual stress increases slightly with the increasing of thickness. The theoretical expansion limit of TWIP steel is 5% to 10% larger than traditional steel for expandable tube while thickness is the same. Conclusion can be drawn fro〖JP2〗m the analysis results is that TWIP steel for expandable tube with large expansion rate has more advantages over traditional steel （J55 steel， etc） for expandable tube. Therefore， it is important to apply the finite element analysis of expansion mechanics to TWIP steel expandable tube．

In order to improve the control level of power inputting into calcium carbide furnace， we introduced the concept of “thermal state parameter”. Thermal state parameter of calcium carbide furnace comprised heat partitioning coefficient C and heat surplus q. Heat partitioning coefficient represents the condition of power distribution. Heat surplus represents the thermal state. The calcium carbide furnace is divided into burden zone and reaction zone through the analysis of calcium carbide smelting process. Through the analysis of two stage thermal equilibrium， we calculated the hearth thermal state parameter and studied the influence factor of thermal state parameter. Through adjusting the value of thermal state parameter, we can control the power inputting into furnace．

The limitation of linear singledegreeoffreedom onemass model was analyzed， and twomass dynamic model was built by lumped parameters. The displacement of follower， the output error of the camfollower system and the contact force between the cam and follower were analyzed through assuming the displacement function of the cam was cosine. The results of twomass model were simulated by a design example. The results show that the kinematics error， contact force and relationship between angle velocity of the cam and kinematic error and contact force got by the twomass model are very useful to the actual design of cam mechanism．

In order to reduce the air pollution discharged by funeral parlor of civil administration section during the funeral processes， special antiseptic equipment was developed to purify the indoor air. Based on the filter technology， activated carbon adsorption technology and photocatalytic technology， an intellectualized air flow control system was designed applying the modified chaos algorithm and PID optimal control algorithm. Then the prototype equipment was built at the optimal parameters. As shown by the experimental results， the designed nano-TiO₂ photocatalytic antiseptic equipment is easy to operate and has a powerful antiseptic ability. This equipment can satisfyingly disinfect the air， and therefore can replace the ultraviolet antiseptic equipment in the funeral parlor．

In order to achieve remote automatic and continuous measurement of oil well working level， an automatic measuring device was designed. According to the theory of soundwave echo method， this device completed liquid depth measuring. Based on pressure differential principle， infrasound source was produced by electronic gas explosion. Compared with the traditional manual measurement， it has the advantage of economic， small volume， safety and security， measuring without manual intervention and can achieve automatic and continuous measurement. This device adopted wireless remote control by using the SIM300DZ module and realized data remote sending and receiving as well as monitoring and controlling with high intelligence. It achieves the target of automatic and continuous measurement， which is a great solution to reduce the labor costs for traditional manual testing and has high economic benefits．