To improve the efficiency of biological knowledge utilizing in the products' innovative design, especially to support the rapid response design of products, a multi-bionics design method oriented to systematically functional implement was proposed. Multi biological effects cooperating with biological system modeling method and technical conversion of the biological prototype was used. By comprehensively using the new products function modeling method, the biological prototype could be converted into products' technical system satisfying the new market needs. The new method had obvious advantage over the ordinary bionics method. Lastly, the design of a new kind rockery making instrument was used as an example to verify the practical value of the proposed theory.

To acquire the associational knowledge between function, structure and green features in the green patents, a new method, namely acquiring knowledge based on feature association, was proposed. The training sets was established firstly by extracting features of parts in claims, analyzing functions and green features in the abstract or title, in which features of parts-objective function and objective function-green features was constituted. Then associational rules hidden between them were extracted clearly by a data mining algorithm. Knowledge among features of parts, objective function and green features was discovered and used for supporting product green innovation continuously. The method was demonstrated by the example. The obtained result proved the validity of this method.

To solve the state space explosion problem of Markov model, individual component (level 3) SPN model was developed based on the state space decomposition approach. Then, according to the basic structure of the subsystem, individual subsystem (level 2) SPN model was developed. The subsystem SPN models were integrated into system model (level 1). Reachable graph and reduced equivalent Semi-Markov rate diagram were generated to obtain solutions of the equations for the system model. Assessment of reliability and availability for the system was done. Pumping system as an example was used to validate the decomposition method could help to overcome the state space explosion problem, to reduce the difficulty and calculation for modeling and to operate easier.

In order to more realistically describe the failure rules of aircraft system and improve the accuracy of reliability analysis, the reliability analysis model of airplane was established using mixed Weibull distribution. Due to the difficulty of parameters estimation for the established model, it was converted into an unconstrained optimal mathematical model by using the idea of K-S test and performing maximum of goodness-of-fit as the optimization goal, and then a parameters estimation method of mixed Weibull distribution was established. Improved particle swarm algorithm was used to solve the optimal mathematical model. Because of using the variance of particle swarm to automatically adjust acceleration factor in the iterative calculation process, the efficiency of solving optimal mathematical model was improved, and the probability of falling into local optima solution was decreased. The numerical examples showed that the suggested method had characteristics including higher parameter estimation accuracy, simple and easy to implement, rapid convergence speed, and it was not easy to fall into local optimal solution.

Design of mechanical system with adaptable-function as the goal, behavioral process, as an important aspect of design theory, provides a larger innovation space for designers. Based on the theory of system similarity, the behavioral process ordering structure similarity of typical adaptable-function mechanical products was investigated and the corresponding ordering structure of behavioral chains to be of the orderly function, orderly structure and orderly time characteristics and rules was summarized. Moreover, some derivative rules for the application of the ordering structure of behavior chains was also put up, with which the structure similarity and its variation could be employed to the redesign of existing products with adaptable functions and system optimization by providing designers with new design approaches and methodologies. Finally, a case study was also presented to illustrate the feasibility of the conclusion．

Aimed at the increasing emotion requirement of consumers, a new optimization design method for product modeling based on kansei image was proposed with the idea of combination. Firstly, the category classification of kansei engineering was applied to obtain the design elements. The relationship of kansei image and design elements was established by quantification-I theory, and used as the fitness judgment in the optimization design of product modeling. Secondly, the feature elements of product model were combinatorially optimized by the ant colony algorithm, which achieved a variety of product modeling schemes with a small amount of product samples. And then the image products meeting the emotional requirement of consumers were designed fast. Finally, a case study of electric kettle design showed that the method could optimize product design effectively.

The accuracy control of offset displacement for an offset mechanism spindle is a crucial issue to realize the steering drilling. Aiming at a new type of static point-the-bit offset mechanism, its structure was introduced and the control principle was discussed first. Then, the mathematical model of well trajectory control algorithm based on the cylindrical spiral method was established, and a three dimensional multi-objective well trajectory was taken as an example to show how to realize the well trajectory control with the algorithm proposed , as well as the establishment and simulation of the virtual model based on the platform of SolidWorks and ADAMS. Then the motion curve of the offset mechanism were obtained. At last, experiments on the steering performance of the new offset mechanism prototype were carried out based on LabVIEW. Comparing both simulation results and experimental measurements with theoretical values, it was concluded that the algorithm produced a fine control effect. The results verify the feasibility of realizing steering control for the offset mechanism and provide a theoretical reference for the design and optimization of the practical trajectories control algorithms.

In order to expand the stirring region and destroy the mixed isolation region in the stirrer, a novel shifted propeller was carried out based on the mixing theory and the design principle of pitch. Computational fluent software was applied to the study of 3D flow field driven by stirrers composed of shifted six blade propeller (6SBP) and ordinary 6BP respectively in sludge. The flow pattern, velocity distribution and power consumption in stirred tank with two different propellers were extensively analyzed and compared by simulation which were verified by experimental test. The results showed that the values of numerical simulation and the experimental measurement of power consumption were in good agreement, and isolation region was destroyed and the stirring region was enlarged by the asymmetric structure in flow field of 6SBP propeller. The radial and axial velocity distributions of 6SBP were clearly superior to those of 6BP at agitation speed of 3 r/s, while its power consumption was about 77% of that of 6BP agitation.

In order to explore the rationality of simplified model of bellows in exhaust system, numerical analysis and theoretical study for the simplified model were developed in the project. Firstly, a heavy truck exhaust system was used as the research target to build a finite element model and the bellows was simplified as zero-length CBUSH unit to analyze the exhaust system’s freedom modal. Secondly, in order to conduct the theoretical calculation, the exhaust system was divided into two degree of freedom model using bellows. Finally, the comprehensive comparison and analysis result that the 7th and 8th modal frequencies were both close to zero, which was mainly resulted from the weak stiffness rotated around the X and Z axis. It also met the desired research result and verified the premise of good vibration isolation effect of bellows in the X and Z axis. Furthermore, the theoretical method and numerical calculation are universal and have engineering guiding significance.

In order to study the influencing degree of main suspension K & C characteristic parameters on handling stability, a 3-DOF dynamic model of three-axle vehicle based on its suspension K & C characteristic parameters was established with considering of the axle load distribution of three-axle vehicle and reallocation of vertical load on both sides of wheels under roll torque. Moreover, on the basis of the 3-DOF model, fuzzy grey correlation analysis model based on main suspension K & C characteristic parameters of three-axle vehicle was established using the cosine value of fuzzy membership and Euclidean distance formula to make fuzzy grey correlation analysis on the influencing degree of main suspension K & C characteristic parameters on steady-state response of three-axle vehicle. The results showed that, for the roll angle, yaw rate and lateral acceleration in the stage of steady-state response, the order of fuzzy-grey correlation degree of influencing factors was all R4>R2>R3>R1>R6>R5 when the speed was 15 km/h; and for the side slip angle, R5(β)>R6(β)>R1(β)>R2(β)>R3(β)>R4(β). The order of fuzzy-grey correlation degree of influencing factors at 35 km/h and 55 km/h was obtained in the same way. Thus, the front axle roll steering characteristics had the greatest influence on roll angle, yaw rate and lateral acceleration while intermediate and rear axle roll steering characteristics had greater influence on side-slip angle, with no statistics difference.

In order to ameliorate the noise condition of the wheel loader, optimize the level of noise analysis technology and improve product competitiveness, a study on identifying the noise source from the cab of the ZL50 wheel loader based on the robust independent component analysis (RobustICA) was carried out. The RobustICA was adopted to separate noise signals of the cab and a series of independent components were obtained. Wavelet transform and coherence analysis were used to analyze these independent components. From the results of time-frequency analysis and correlation analysis, the corresponding relationship was determined. Results showed that these independent components corresponded to exhaust noise and fan noise of the loader which constituted the ingredients of the noise near driver’s ear. The superiority of RobustICA is verified using in the field of sound source separation and identification.

In order to automatic control the movement of airborne anchor drilling machine, kinematics equation of the seven joint of airborne anchor drilling machine was established using D-H coordinate system. Regarding rectangular tunnels as the work object and combining with the actual working conditions of digging anchor machine, a multi joint control method for sectional anchor drilling machine was put forward under the boundary conditions of tunnel supporting height. The inverse movement control model of airborne anchor drilling machine was established with different support height conditions and the motion range of anchor drilling machine bit was obtained. The results showed that D-H coordinate method could determine work attitude of the anchor drilling machine; the drive angle of each joint for anchor drilling machine under the condition of different tunnels height was determined and the specific working scope of the bit was obtained which realizing the supporting requirements of anchor drilling holes in the whole tunnel section, improving the work efficiency of the machine auxiliary adjustment movement and shortening the adjustment time of drilling position. The research provides design basis for sectional automatic control of airborne anchor drilling machine.

As the dynamics model of flexible manipulator are very complex, traditional model-based control strategies are not suitable for solving the control problem. A new fuzzy control algorithm was proposed based on proportional-derivative type fuzzy rule. Firstly, a proportional-derivative type fuzzy controller was developed for angular position control. Then it was extended to incorporate a fuzzy controller and input shaping algorithm for vibration suppression. To verify the proposed methods, an experiment was constructed and real time control performance was shown both in time domain and frequency domain. The control performance of the proposed control algorithms were verified in terms of tracking capability, vibration suppression performance as well as time response specifications.

In order to improve the ability of energy absorption and economical performance of a vehicle bumper anti-collision beam, an improved design of anti-collision beam was carried out based on the principle of stiffness matching. A finite element simulation platform was built to simulate the 40% offset static pressure test and the simulation method was validated. Considering factors such as design function, manufacturing cost and repairing expense, a reasonable deformation mode of anti-collision beam was proposed, which involved three phases including beam elastic deformation, crash box plastic deformation and beam plastic deformation. Based on the relationship between deformation and stiffness, a stiffness matching mode of anti-collision beam was proposed. Aiming at the unreasonable deformation of the original anti-collision beam, the improvement and validation were performed by adjusting structural and material parameters. Simulation results showed that the total energy absorption of the improved anti-collision beam was higher, which met the requirement of sufficient energy absorption. The reasonable deformation mode of anti-collision beam was realized by meeting the stiffness matching relationship.

In order to perfect the design system with the mine vehicle driving and steering system, the full hydraulic power steering follow-up system of certain type mine transportation vehicle was studied. The system used a unique shaft structure feedback, contacting the steering control mechanism connected with the spacial link mechanism and achieving the machine-hydraulic with follow-up control of steering mechanism on mine transportation vehicle. By analyzing the stability and response characteristics of the steering system, the open-loop and closed-loop control system transfer function was obtained. It found that increasing the speed amplification coefficient Kv, would reduce the speed error and load error, but it would also reduce the stability of the system. Reducing the flow-pressure coefficient Kce, could reduce the load error, but would make the damping ratio decrease. The result showed that the magnitude margin of the steering system was 12.5 dB, phase margin was 86.2°, the system response rise time was 0.03 s, and maximum overshoot was 52%. And system phase margin was large, the damping ratio was relatively small, but the fast response was good, and then the system was in steady state. The unique structure design of the steering system provides some references for construcing machinery vehicles.

To study the mechanical properties of hydraulic rods under bad conditions, the loads of whole drum shearer were analyzed and the loads of drum and sliding shoes were calculated under the condition of oblique cutting. The variation of each hydraulic rods tensile force with different coal seam dip angles and pitching angles was researched. The stress distribution of hydraulic rod with most serious bearing load was analyzed by using Workbench. Based on the fatigue cumulative damage theory, the fatigue life of hydraulic rod was predicted. The research results reflected the mechanical properties of hydraulic rods in the practical work accurately. It provides theoretical basis for design, calculation and practical production development of shearer, and also has reference value for further research of the same type components.