To customize large engineering mechanism and meet clients' individual demand, on the basis of analyzing the origin, type and current situation of customization technologies, aiming at the limitations of current customization methods and technologies, a visual customization (VC) model for engineering mechanism and the framework of VC systems are established. Based on the characteristics of engineering mechanism, its categorized function system was built, and solid models corresponding to this function module were created. Appearance module made up of exterior shape, color and texture pattern for engineering mechanism was created, as well as corresponding solid models. These models together with function modules constitute the integrated product model. ASP database supporting all customization modules was set up, and then a customization system integrating function customization and appearance customization was formed. On the virtual reality platform of Quest3D, a full visual customization process from parts to integrity was achieved, which assured the visualization of customization and visual reality of customized objects. Finally, By taking VC system for road-surface-cold-milling-machine as an example, its main workflow focusing on milling machine's function customization and appearance customization was introduced, which practically proved the feasibility of this VC model.

Analysis and research on reliability design limited value of major performance parameter during product design are conducted. By Montc Carlo simulation method and performance parameter reliability evaluation method, comprehensive analysis of random variables and determination of reliability design limited value are implemented. Then, implementation way to guarantee reliability index during product design process is put forward, which provides quantitative reference for product manufacture check and application inspection.

Automatic Control system has been widely used in the field of modern chemical production industry, which not only enhances the automatic level of production device but also elevates products' quality and output. A method combining manufacture process monitoring system and PLC is presented, through which automatic control system of a set of device for latex polymerization is developed and automatic control and monitoring function of the whole manufacture process are realized. For the key factor influencing quality best-polymerization temperature, cascade with stroke-dividing control algorithm is applied. Through long-term practical running, control effect reaches the expectation, which demonstrates the feasibility of this control system.

An entire Level Ⅱ computer control system for 2 800 mm medium and heavy mill of LISCO was independently designed and developed. This system was composed by multiple modules, including data communication module, schedule setup module, self-learning module, rolling piece tracking module and data management module, etc. Data communication module took the responsibility of data exchange between Level Ⅱ control system and other systems. Data management module included data acquisition and data recording, which queried model parameters for model calculation and recorded actual technological process parameters of each piece. Rolling piece tracking module was in charge of position and data tracking of each piece in the whole process from heating furnace to rolling finished, and calling other functional modules at different trigger points to realize rolling pieces scheduling of auto steel rolling and rolling rhythm control. Schedule setup module made use of mathematic models to calculate rolling schedules. Self-learning module was divided into long term self-learning and short term self-learning. Based on the above modules, schedule auto setup and full automatic steel rolling control for rolling production process could be realized. This system had been successfully applied to the field of rolling production and the result was desirable.

A flexible developing system for automatic ceramic powder storing and continuous proportional weighing is beneficial for flexible design of its application control systems and achieves time-and-money saving. By means of Siemens WinCC and S7-300 PLC, a flexible developing system was developed via modern industrial Ethernet and Fieldbus technology. Since the upper and lower level computers utilizes a uniform parameter system, this software is convenient to operate and maintain and its control system has favorable intelligence. Moreover, this software is easy to connect into LAN and Internet, which can implement remote monitor and maintenance.

Due to the difficulty of manufacturing twisted tape with teeth, a new component, straight strip-insert with elliptical teeth and broken edge on both sides, which could automatically removed fouling and enhanced heat transfer, was put forward. Each tooth was a fluidic power structure element to drive the insert self-rotate. For the broken edge, part of the fluid in tubes formed spiral flow. Therefore, this straight strip could self-rotate at low flowing speed and remove the fouling on tube wall automatically just like twisted strip with oblique teeth. Meantime, the convection heat transfer was greatly enhanced because of the three factors: much eddy flow behind the elliptical teeth, fluid flow's changing into spiral flow, combination and separation of spiral flow and axial flow. Experimental research was conducted on the three factors including elliptical teeth distance, teeth angle and broken edge. The results showed, comparing to twisted tape, this new insert could work reliably at the flow speed of 0.5 m/s in tube and make the heat transfer coefficient inside tubes increased by 171%. The flowing resistance was in the range of industrial permission, which equaled to 3.25 kPa/m when the flow velocity in tube was 0.625 m/s. Therefore, this strip had good comprehensive performance and could be manufactured easily; it had great significance to industrial application.

To fulfill the demands of current transmission technique, a new kind of hydromechanical stepless transmission gearbox was proposed. Its principle, performance and application prospect were expatiated. Prototype model of this gearbox was established in Pro/E Wildfire. Dynamic balancing experiment of the manufactured gearbox was carried out on the YWD-100/2 dynamic balancing test rig. The results showed that there existed no interference in its assembly and the reasonability in structure design and feasibility in manufacture were demonstrated. Furthermore, the results of dynamic balancing experiment were approached to the ideal value. Therefore, this gearbox filled the blank of current transmission technology.

Grounded on study on kinematics of Traditional Chinese Medical Massage (TCMM) techniques, mechanism types and output matrix of TCMM manipulators on the basis of parallel mechanisms are presented according to the kinematics characteristics of TCMM techniques and parallel mechanisms. Concept designs were accomplished on TCMM manipulators based on parallel mechanisms with three translational and three rotational freedom degrees, with three translational and three rotational freedom degrees, with three translational and two rotational freedom degrees, with two translational and three rotational freedom degrees, with two translational and two rotational freedom degrees and with two translational and one rotational freedom degree. Furthermore, virtual prototypes are established by utilizing Pro/E. Finally, the characteristics of each mechanism type are summarized from the aspects of output matrix of moving platform, controlling and decoupling, structure symmetrical characteristic, workspace, rotational ability and so on, which provides theoretic references for practical application of each mechanism type.

The principle of gas-solid fluidization and classification towers are introduced. Based on the calculation method of structured packing towers, the structure design of a classification tower with structured packing was made. Solid particles are separated into different fractions based on there size. Usually, there are three main important forces acting on particles in a classification tower: gravity, flotage and dragging force. If the particles are small, the flotage and dragging force will predominate and more particles with the air stream will go into the fine fraction. If the gravity of particles is greater than the flotage and dragging force, particles will deflected into the coarse fraction. As a result, the coarse fraction were went into the lower part of the tower, the reunited particles were distributed when they collided with structured packing, thereby, the classification towers has a ideal classification effect. It is demonstrated that the classification tower has a ideal classification capability from experiments.

The design theory and design calculation method of a new type of micro-feeding tool holder (MFTH), driven by PZT and taking double parallel four-bar flexure hinges as elastic deforming component, are presented. On the precondition that output distance of MFTH is known, theoretic reference of PZT actuator selection and calculation method of equivalent stiffness of flexure hinges are put forward. Furthermore, structure design of flexure hinges, system stiffness calculation of MFTH and modal analysis of tool holder are carried out. By utilizing FEA application and experiments, design theory and design calculation method is tested. As part of design method of tool holder, practical performance parameters are measured by experiments and the measured data demonstrates the reliability of this method.

Disturbance of metal media on radio frequency signal is always influencing the effective application of RFID. To explore the principle of triggering this disturbance and the methods to solve this problem, by taking UHF RFID system as a target, according to relevant theory of electromagnetic field, a series of experiments are designed. Through analysis of data gained from experiments, impact of metal media on RFID passive tag readability is verified. Furthermore, relationship between distance from tag to metal media surface and readability is discovered. Moreover, the magnifying effect of an extra metal layer to readability is found too. Finally, according to the results of experiments, a design plan which can be used on RFID passive tag on metal surface is proposed. This plan can not only eliminate negative effect of metal disturbance, but enhance readability, which considers the convenience for use and manufacture cost as well.

Taking grinding vibration and surface waviness of two engineering ceramics, namely alumina and PSZ, under high efficiency grinding as research target, definition and evaluation method of grinding surface waviness and the reason of surface waviness are briefly described. Influence of grinding parameters on component surface waviness is analyzed through changing wheel speed, feeding speed and grinding depth on the platform of ultra-high speed surface grinder. On the basis of experimental research, the affecting factor and principle of grinding surface waviness are analyzed and discussed. The results indicate that, in high efficiency surface grinding of engineering ceramics, wheel speed and feeding speed are the dominant factors that affect grinding vibration and surface waviness. In the condition that wheel speed is 120 m/s, grinding vibration is mainly triggered by forced vibration sources, and the machining surface quality is better than that of lower wheel speed. Under the condition that the grinding efficiency is guaranteed, high efficiency grinding of engineering ceramics is more suitable to be taken in larger depth and lower feeding speed. 

A multi-objective robust optimization method based on sensitivity was proposed. Aiming at the condition that there exists disturbance in design variables, by adding bias function to original multi-objective optimization model and adopting worst-case method, constraints were adjusted to ensure robust feasibility. Global sensitivity equation (GSE) method was utilized to compute the sensitivity of objective function and constraint function to design variables. Furthermore, Pareto Genetic Algorithm (PGA) was employed to search pareto-optimal set of multi-objective optimization problem with constraints. Designer can select suitable design points according to different design criteria. The above method is applied in aircraft conceptual parameter optimization design, and its result is compared with the ones obtained by traditional methods. 

Numerical simulation of mass transfer process of evaporative cooling by utilizing CFX was investigated. Calculation and analysis took flow-route with 90° cross angle as model and calculation adopted Shear Stress Transport (SST) turbulence model to seek solution of 3D Navier-Stokes equation. Through simulation, interior humidity distribution in cross-corrugated passages and its characteristics were described. Finally, 3D humidity field structure of cross-corrugated passages was gained and optimization suggestion was raised for this type of flow-route.

Taking clamping claw in half-burying torpedo instrument as research target, according to working requirements of clamping claw, by combining FEA method with traditional optimization technology, FEA-based optimization model is established. The optimization computation is completed by the application of ANSYS and its result is obtained. By comparing this optimized result with the result of traditional design, it can be concluded that the former can not only meet the requirement to salvage torpedo, but sufficiently utilize the loading capability of material. The analysis result indicates that it is an effective method to apply FEA-based optimization in the design of clamping claw.

In this work, methods and tools for the Optimization Design of chassis with mechatronic components are presented. A new kind of software, allowing automatic conversion from multi-body vehicle models in ADAM/Car to those in Alaska, is developed. The converted vehicle model is extended afterwards through tire model, driver model and electromechanical steering system. The motion equation of the whole system is generated in symbolic form and output in C-code. Evaluation criteria for vehicle dynamics is analyzed, which makes preparation for the multi objective optimization in form of objective functions and constraint functions. In addition, different approaches of sensitivity analysis are discussed. As a useful tool for symbolic approach, automatic differentiations are applied. Test and contrast between different optimization methods are conducted. Optimization computations are completed in parallel with the support of Message Passing system MPI on a workstation cluster. The efficiency of the developed methods and toos has been presented in practical applications.

Both axiomatic design and TRIZ have their advantages and disadvantages in product design. Axiomatic design has advantage in systematically generating conceptual design, while TRIZ has advantage in solving design contradiction. Therefore, a method integrating axiomatic design and TRIZ is proposed. Firstly, axiomatic design is utilized to generate conceptual design. Then the potential contradiction in the design is examined as well as identifying whether the contradiction is a physical one or a technical one. Furthermore, proper contradiction solving laws are adopted according to different contradiction types. Finally contradiction is eliminated by redesigning design parameters. The case study of hydraulic workover rig was given to demonstrate the feasibility of this proposed method.

Aiming at the situation that there are only a few sample data in equipment wearing fault and so faults are difficult to diagnose, oil monitoring diagnosis criteria based on the maximum entropy principle are put forward. Firstly, maximum entropy principle is used to analyze the oil monitoring data. Then, the most unbiased probability distribution of oil monitoring data is obtained, and the unbiased arithmetic mean and variance of the monitoring data can be gained. With the three-line values method, three abrasion status distinguishing criteria, namely normal-line values, warning-line values and danger-line values, are acquired. Finally, the above method has been applied to analyze the actual oil monitoring data (ferrographic analytical data) of fan facilities in a landification enterprise and comparison with the actual overhaul result shows the method is effective.