To solve the deficiency in the design of tradition mining method, the TRIZ methodology has been introduced into the innovation design progress of mining method. The actual problems were analyzed, but the technical and physical contradictions were found out by using the TRIZ methodology. And after using the innovation principles which were provided by the TRIZ methodology worked as the thinking tools, the innovation design of mining method was finished. Taken a mine's practice in Guangxi province as an example, the working flow of mining method design based on the TRIZ methodology has been introduced in detail, and the issues of mining design were solved in high efficiency. The result indicates that the TRIZ methodology using in the mining field is feasible and of high efficiency, and provides one new tool for innovation design of mining method, and would have a good views in future．

 Job shop scheduling (JSS) is a representative NP question and coupling complicated system. JSS based on axiomatic design was presented and analyzed in detail, such as system decoupling design, approach of decoupling, decoupling matrix, scheduling algorithm and the complexity of the algorithm. The actual production scheduling shop was taken as a research object, and the authors have given machining parts weights based on the urgency situation of parts to be processed, with giving priority to the parts which needs longer working hours in scheduling process. The general objective was decoupling, with optimized compression processing time to meet the constraint condition. Because different weights were sent to the non-manufactured parts, the algorithm would be more conformed to the reality of enterprise. The result of the analysis to the algorithm complexity turns out that this algorithm belongs to three time multinomial complex levels, which surpasses the general algorithm. Two instances are presented to show the practicability and validity of the algorithm.

There are many machinery systems extensively applied in engineering, which means it is difficult to analysis its reliability. But the reliability technique to circuitry system is comparatively mature. The reliability parameters of electronic component are also rather identified. The paper presented a method based on electromechanical similitude model. A basic machinery system and a basic electricity system were considered. Basic kinematics equations in them have very accordant form, that is, a couple of similar systems. When power of electricity system is voltage, the similarity system is a similitude of force-voltage. When power of electricity system is electric current, the similarity system is a similitude of force-current. Using the electromechanical similarity system may transform a machinery system to a similarity simple electricity system. We could use electric circuit theory to analyze and simulate machinery system. Owing electric circuit system is composed of basic seriesparallel components, and reliability parameters such as failure index of electric circuit system are known, using of the method of paper by similarity electric system could confirm the facility relation of parts and analyze reliability of machinery system. 

Stress concentration often occurs along holes of mechanical components, and many cracks emanating from these holes. Predict crack propagation behavior emanating from these holes so as to assess the residual life and to avoid catastrophic failure. Because of geometrical dimensions, material properties and mechanical loads are often random variables; crack growth behavior is a random process. Probability fatigue is more meaningful to structural safety. Considering material properties and loads as non-normal random parameters, reliability analysis method of fatigue crack propagation life based on Paris-Endogan theory and maximum circumferential stress criterion was presented using stochastic finite element method, fourth moment method and Edgeworth series. Fatigue crack propagation life of a plate subjected to constant distributed stress at up & down edges with a crack emanating from a hole in the plate was analyzed. The crack path was simulated. From the results, the crack propagation rate at the initial stage is slow comparing with that at the final stage of crack growth. The reliability of crack propagation life and the residual strength of the plate are gradually decreasing along with the crack growth. The proposed method is meaningful to the reliability analysis for fatigue life of mechanical components.

 This paper presented a quick group search optimizer with passive congregation (QGSOPC) for optimum design of spatial pin connected structures. The algorithm was based on the quick group search optimizer (QGSO). The QGSOPC algorithm was verified and compared with the HPSO, GSO and QGSO algorithm by the numerical examples of the design of two spatial truss structures. The results show that the QGSOPC algorithm got not only preferable convergence rate and accuracy, but also the best stability. The proposed QGSOPC can be used more effectively for practical structural optimal design problems．

 To improve the design quality of the non-symmetric double pressure angle gear and shorten the design cycle time, in accordance with elastohydrodynamic lubrication theory, by example, the authors took the maximum value of the smallest film thickness between gear teeth and the minimum value of the total volume of the transmission gears as the object function. And, constrained multi-objective optimization was achieved according to particle swarm optimization, programming with MATLAB. On this basis, study from the point of mathematical logic and physical mechanism were carried out for the sensitivity analysis of objective function to each design variable according to gear engagement theory and principles of modern tribology. The results show that with module and width of gear increasing, the volume of the meshing non-symmetrical gears increases, and it is more sensitive to module comparing with width of gears, the film minimum thickness increases as each of module, width of gear, pressure angle and modification coefficient increases. Pressure angle, module, width of gear and modification coefficient are in order of the degree of sensitivity. Especially, pressure angle is the most important factor for the elastohydrodynamic lubrication film minimum thickness between gear teeth. The increase of the pressure angle on the working profile significantly causes rising of smallest film thickness. Coefficients of all the meshing gears, no matter big or small, have equal influence on the film minimum thickness．

 Automotive transmission assembly line was the object of study. The purpose was to illustrate that the use of SLP theory and Em-plant simulation in transmission assembly line planning could short the design cycle, improve the design quality. SLP theory and Em-plant simulation software were simply described, and then the relationship between them in product line planning and design process was analyzed. The authors took Great Wall automotive transmission assembly line as a design example to elaborate the design process of SLP theory and Em-plant simulation. Firstly the authors introduced the design process of the main assembly line layout and external logistics channel physical planning with SLP theory. And then the authors used the Em-plant simulation software to test and verify the planning assembly line, through which the authors could further balance the stations. The results showed that the assembly line layout and logistics channels are reasonable, and the balance between the stations is high. The conclusion is that the combination of SLP theory and Em-0plant simulation software in automotive transmission assembly line layout design is reasonable. It could satisfy the requirements of the logistics and the balance of the assembly line. And this can effectively improve the level of our production line design．

 In order to analyze fatigue life distribution under random loading, a new fatigue life distribution prediction model was established. Using rainflow method, the range and mean of random load were regarded as two random variables in two-dimensional fatigue load spectrum which was gained by rainflow method. Joint probability density function of two-variables was built up on the statistical analysis of load histories. Based on the definition of Miner cumulative damage theory, the causes of scattering of the cumulative damage were analyzed. The function of constant amplitude median S_a - S_m - N surface was established. According to statistical property analysis of Miner cumulative damage rule, probability distribution of fatigue life based on two-dimensional load spectrum was predicted. When the probability distribution of the cumulative damage was known, the fatigue life distribution could be predicted. Furthermore, component reliability at any pointed time could be available. In the end, an example of application was presented. The result shows that the above method is quite effective in prediction of the distribution of fatigue reliability analysis for engineering structures．

Based on Huston method of multi-body system theory, this paper presents error modeling of 4-DOF manipulator. Transformation matrix between two adjacent bodies with errors was described. The authors summarized all factors which contributed to error and calculate comprehensive error and systematic error by MATLAB software. The results offer theoretical basis to error distribution and error compensation. The error modeling and error analysis method both are useful for multi-DOF motion system．

 In order to improve the impact resistance capability of the aircraft skin under the event of uncontained gas turbine engine, it is required to estimate the energy which is needed to destroy the skin according to the characteristic of the uncontained debris and the failure model of the skin. Therefore, based on the shear plugging energy model of the rigid flat-ended cylinder projectiles, and considering the global deformation and local shear deformation, the plugging energy model of the cuboid debris was raised with the means of normalization. And with the raised energy model and the data of the typical uncontained engine debris, the algorithm of aircraft skin thickness was proposed for the aircraft design. Finally, an example of the algorithm was given which showed the algorithm was available．

 Noise and vibration of mechanical equipments are important. Acoustic-structure coupling system is a common problem of multi-physics coupling in the field of mechanical noise and vibration. The paper researched acoustic-structure coupling system analysis methods, and provided some theory basis for structure and fluid coupling analysis. Acoustic-structure problem could be divided into two classes: strong coupling and weak coupling. The class should be selected based on coupling degree equation or engineering experience. Based on structural finite element method (FEM) and acoustic boundary element method (BEM), the authors have researched the coupling equations and flows of two coupling methods. Prominent noise and vibration CAE software was applied to analysis specific acoustic-structure coupling examples, and frequency response results of model with different coupling methods were obtained. The two results were almost identical in curve trend and peak value frequency. In high frequency domain, weak coupling method result was larger for ignoring damp of air to structural vibration. For thin wall structures, influence of air was so large that must be referenced, strong coupling method should be selected; for large mass or thick wall structures, weak coupling method could be selected. The results confirm the selection foundation of coupling method, and summarize two coupling method application range in engineering．

 As the geology is variable in shield tunneling process, the control of thrust speed must be nonlinear, which puts forward higher requirement for control algorithm. The model for thrust speed of the thrust hydraulic system in the shield was established, lying on the analysis of the theory of the thrust hydraulic system of the shield. An adaptive PID controller for thrust speed of the thrust hydraulic system in the shield based on BP neural networks was designed and the step response simulation was carried out by use of MATLAB software under two different methods of controlling for thrust speed of the shield which were traditional PID control and adaptive PID control based on BP neural networks, the sinusoidal tracking simulation was also performed. The simulated results show that PID controller tuned by BP neural networks has good tracking abilities, strong robustness and higher stable precision, better ability for setting than traditional PID control. Therefore, adaptive PID control based on BP neural networks applies to such nonlinear application case as the control of thrust speed of the shield．

Traditional rockbolt testing methods have problems of destruction to the rockbolt, complex testing process and low detection accuracy. In view of those problems, a new nondestructive testing method based on magnetostriction guided wave was proposed. On the basis of studying the magnetostriction guided wave theory and the characteristics of guided wave in rockbolts, a testing system was developed. Guided waves of  L(0,1) mode were excited in rockbolts by the testing system. Experiments of detecting the length and defects of rockbolts in the air and concret were completed. Nondestructive testing of rockbolts was realized with characteristics of no couplant require. The results indicate that this method can be used in the actual rockbolt testing work to detect free or buried rockbolts with characteristics of high detection accuracy and simple testing process．

To improve the capability of on-line autonomic fault diagnosis and self-repairing for equipment, the approach and feasibility of a hardware-based implementation for immune algorithm were studied. Representation and match rule are primary characteristics of negative selection algorithm of AIS. This paper presented the hardware implementation methods for some binary matching rules. Firstly, the definitions of rcb, r-chunk and Hamming distance matching rules were expatiated. On the base of FPGA, it designed the implementation project of these matching rules. The results of function simulation and experiment are taken to demonstrate the validity of the project. Also, the results show that this project has the properties of real-time and reliability. By comparing and analyzing the effect of detector coverage using different binary matching rules, it pointed out that reasonable matching rules should be chosen to meet the need of project. Finally it suggested the following job of the research in future．

 As one vital part of the large-aperture ground-based electro-optical telescope (LGEOT),surface quality of the tertiary mirror M3 directly affects the imaging quality of telescope optical system. The geometrical dimension, material, structure of lightweight holes, support methods were analyzed to achieve more accurate M3 structure. The support points, thickness of hole, plane, rib, rim and rim-chamfer of M3 were optimized by means of finite element software ANSYS, MSC.Patran/Nastran to get optimal structure parameters. The optimized M3 structure makes the surface figure deformation PV value 38.03 nm, RMS value 8.98 nm and both meet the optical requirement. The results may offer some reference to the design in this area．

 In the coaxial telescope system,the relative position and pose between primary mirror and secondary mirror are strictly required. Therefore,a multi-degree-of-freedom adjustment mechanism for secondary mirror is needed. To satisfy the specifications of the adjustment mechanism for secondary mirror,a device consisted of a XY translation stage and a Tip/Tilt/Focus stage was presented. The Tip/Tilt/Focus stage was composed of three actuators, fixing and moving platform which were connected by flexure hinges. The motion of the platform was performed by the extension of three actuators and the rotation of flexure hinges. The kinematic principles of Tip/Tilt/Focus platform were introduced with details, then the flexure hinges were considered,and the relationship between geometric parameters of flexure hinges and bending & axial rigidity was detailed. This paper provides an objective basis on design of five-degree-of-freedom adjustment mechanism and flexure hinges, which could be applied in precision engineering．