In todays highly competitive market environment, product must satisfy customer needs and be creative.Aiming at this problem,this paper researched customer needs and creativity strategy,and developed a method of product innovation by systematically integrating QFD(quality function deployment) and SIT(systematic inventive thinking). By mining the customer needs of target product and using the house of quality in QFD to analyse the customer needs,we can obtain the relationship between technology characteristics and rapidly get a creative solution in allusion to the negative correlation in technology characteristic pairs with the SIT theory.The design of track lifting and lining machine effectively demonstrated the proposed method and process．

The ARIZ algorithm within TRIZ was mainly applied to solve complex problems. ARIZ integrated many tools of TRIZ and presented the entire flow process from problems analysis to evaluation of scheme solution. Energy-saving design of cutting drum on shearer was one of the main research directions of drum shearer designers. Drum shearer's operated principle was introduced as well as cutting coal and coal-loading process and the problem of larger cutting drum energy-exhausting. It was known that the reason of larger cutting drum energy-exhausting was forming cutting volume of crescent moon type by analysis of Pro/Innovator^TM5.0 software about energy\|exhausting problem i.e. coal was excessively broken at the tip of crescent moon, at the same time, friction was formed easily because the directions were different between drum revolution and feed direction. With other energy\|exhausting, they occupied a large proportion of cutting power. Only analogy scheme was inquired in knowledge base of innovation method. The nine key procedures were put into effect step by step according to ARIZ flow process. Finally, the effective energy-saving scheme was formed through derivation resources development i.e. adopting the middle part of vertical cutting drum, cutting coal along with parallel direction of bedding and setting high regulating hydraulic cylinder into drum internal part. The ARIZ algorithm' validity is verified through energy-saving scheme design process of shearer on solving complicated engineering problem

For the purpose of automatic environment monitoring, resource detecting and military reconnoitering by using robotic fish, we selected crucian which concentrated high efficiency, high maneuverability and high stability as bionic object. Through principle of biomimetic engineering, we developed a biorobotic crucian model based on morphology, skeleton structure and kinematics of the crucian species. Meanwhile, a detailed analysis was provided on the design principle, the kinematic equation was built, and experiments were conducted to investigate the influences of kinematic parameters including the frequency, the amplitude, the wave length and the phase difference on velocity. From the experiments, the fish was able to generate enough thrust in static water conditions to propel itself. The propulsion speed increases with frequency, and reaches its maximum value 0.48 BL/s at 1.58 Hz, then decreases with frequency; the propulsion speed also increases with amplitude, and reaches its maximum value 0.43 BL/s at 6.3 cm, then slightly decreases; the propulsion speed always increases with wavelength in our experiment; finally, the propulsion speed increases with the phase difference, and reaches its maximum value 0.35 BL/s at 78°, then decreases. The research results provide valuable theoretical and experimental references for developing high performance bionic underwater propulsors in future．

In order to realize lightweight design of the circular stacker\|reclaimer main girder, the ESO(evolutionary structural optimization) method was used to study the topological optimization of the fetching material main girder web, and based on stresses ESO was achieved by secondary development of ANSYS using the APDL(ANSYS parametric design language ). Moreover, a sensitivity redistribution method in combination with the above method was also used to control checkerboard patterns so as to have a smooth transition of each element's contribution or impact factor to the whole structural performances. Finally, a clear result is obtained, offering an reference model for the next design and optimization of the fetching material main girder．

Based on the perturbation analysis theory, the structure reliability optimization of billet hoisters master connecting rod was discussed. Considering the uncertain variables with the unknown distribution form, the random variables with arbitrary distribution were transformed into the standard normal distribution by Edgeworth series, and the distribution function was obtained. The reliability index of structure was computed by the mean and variance of the standardized normal variables and the failure state function, which can describe the reliability degree of the structure. The optimization model was constructed within the constrain of the reliability index. And the optimal combination of the variables can be computed by the optimization method. According to the results, this method can meet the engineering requirement．

 novel precise maglev platform with long travel range was presented in order to get more information about the natural frequencies and the corresponding vibration modes of the proposal platform under various conditions,and conduct the structural design for the platform. Its 3D finite element model was built. And the modal analyses for the components of the platform, the whole machine under different positions, and the whole machine with different electromagnet stiffness after steady suspension were carried out with finite element method. The modal simulation results showed that the weak point of the motion platform or the possible regions which affects the work accuracy was located at the lower electromagnet. The stiffness of the platform is the smallest when it is suspended. The position of the moving object has few interactions with the modal of the overall platform. The equivalent stiffness of the electromagnet is supposed to be limited to a reasonable range to increase the platform stiffness. These results provide an important reference for the structural optimization．

The numerical simulations on velocity and pressure parameters of the flow field in “Stansted” homogenizing valve, jet homogenizing valve and reversed “Z” annular homogenizing valve were generated. The results indicate that pressure fell rapidly when the fluid accelerats into the narrowest channel of the three types of homogenizing valves. And homogenizing pressure relieves from the initial position to the end of the narrowest channel. The homogenizing effects can't be uniquely determined by pressure gradient. Velocity changes were consistent with pressure drop nearby the initial position of the narrowest channel. Besides the initial position of the narrowest channel, velocity changes were mainly affected by homogenizing valve structure. Complicated solid wall boundary can make flow more violently, be conducive for shearing and impacting and advantage to homogenization's micronization ．

Large number of apertures and slots are usually inevitably presented in actual enclosure of electronic equipment due to heat dissipation purpose. However, the penetration of electromagnetic energy leaking though apertures, especially slots, will compromise the shielding performance remarkably. Then, a metallic rectangular enclosure with slots was studied, and the influence of polarization mode and angles of incidence plane wave, parameters of slots such as length, quantity, location, space and orientation on the shielding performance of the enclosure were investigated by the transmission\|line matrix method(TLM). Finally, the main factors determining the shielding performance of the enclosure were proposed. The polarization mode of plane wave, length and orientation of slots has significant influence on the shielding effectiveness and resonance points of the enclosure. The electric field orientation of incidence wave should avoid being vertical with longer sides of slots, and slots shouldn't be lengthy in structure shielding design．

Two generating methods of driving magnetic field were presented for the large gap magnetic driving system driving permanent magnet axial\|flow blood pump, using single pole and double pole switching mode. The coupling mechanism of magnetic field and driving torque of the system driven by the two kinds of magnetic field was simulated and compared based on ANSYS software. Using the mathematical model of energy transfer efficiency and electromagnet\|loss, the energy transfer efficiency of magnetic driving part and loss of the electromagnets driven by the two kind of magnetic field was calculated and compared through experiments of the blood pump. The results show that both of the two methods can drive permanent magnet rotating smoothly in high\|frequency and high speed situation, and using double pole switching mode as the generating method of driving magnetic field for the system according to the comparison．

A linear eddy current buffer was designed for buffering a moving body at high speed. This eddy current produced a repulsive force for non\|adhesive brake. To predict the performance of the eddy current buffer, theoretical calculation expression of buffer force was derived and verified by the finite element method. Besides, instead of traditional permanent magnet array, Halbach array was introduced to improve the buffering property. The linear eddy current buffer can avoid contact and collision, therefore no wear is occurring between the moving body and the brake．

Cavitation phenomena is one of the principal factors which compromise the life\|span and performance of the fluid machinery. A novel method named active ultrasonic detection was proposed, which emitted a high frequency carrier wave to the area round cavitation district with transmission method. The fluid motion would exert an influence on the high frequency carrier wave, which induced that the fluid field information was modulated on the ultrasonic carrier wave, so the fluid field information could be gained through the demodulation of the ultrasonic carrier signal. Based on the experimental dataset from shaft flow pump in different flow rates, combining high speed photography verifying method, a pattern classifier based on support vector machine was set up to achive the active ultrasonic detection of the pump cavitation. This method can detect the new born cavitation accurately, and supply the relevant alarm, to avoid the further development of cavitation．

The intermittent chaos of the Duffing oscillator was used to detect the weak fault signal of the rolling mill buried in the strong noise surroundings. The chaotic oscillator equation added the signal to be detected was designed and could detect rotor eccentricity, rubbing and gear tooth defect early. Application experiments of detecting the fault of the rolling mill's rotors and gears proved this method effective. Compared with relevant function method, the method's superiority is proved.

The principle of a wireless power transmission(WPT) and the basic constitutions of the capsule micro-electro-mechanical systems(MEMS) were introduced. Then, based on a loosely coupling transformer, the WPT system of the capsule MEMS were designed. The secondary receiving windings composed of two orthogonal coils received power after experiment research. The results show that regardless of the capsule location, the secondary can receive effective power, up to 110-240 mW. At last the luminous capsule model prototype was made, and the luminous capsule can work by WPT. It shows the WPT system is feasible．

The attribute listing technique, one of effective creativity techniques, is not utilized properly in the product design. In view of the phenomenon of analyzing attribute superficially, the three kinds of characteristics of product were analyzed deeply and classified in detail respectively. Details and relevance were emphasized in attributes of noun. An ulterior step was taken to divide the adjective into character attribute and state attribute, and verb attribute into use function and use action. Then design analysis and development surrounding the three kinds of characteristics with an object of vertical air conditioner were carried out. As a result, the technique enhances the design innovating efficiency in terms of form, construct, operation mode and human-machine interaction. The process illuminated how the attribute listing technique was used and what should be emphasized in design process. The result shows the validity of the new method in product creative design．

In order to ensure the stability of the mixing system, the deflection angle of vertical agitator shaft must be controlled in a certain range by adjusting the bearing spacing. Since the shaft deflection angle is mainly caused by bending moment and bearing clearance, the dimensionless relational expression and the relation curve between shaft deflection angle and ratio of bearing spacing to shaft diameter was derived. The conclusion from synthetical analysis of the relation curve is the reasonable scope of the bearing spacing can't be too long or too short. Generally speaking, it is about 2.5-5.5 times the size of shaft diameter. Known the diameter of agitator shaft, relation curves of different kinds of allowable shear stresses were provided to find the specific reasonable scope of the bearing spacing. Theory foundation may be provided for design of agitator shaft by derivation and analysis results to select the reasonable scope of bearing spacing．