Based on fuzzy mathematics theory and evidential theory, a method to process uncertain information comprehensively and reasonably select products’ mechanical structure type is presented. Firstly, a set of design principles of each product sub-class is extracted by utilizing existing products cases and thena fuzzy vector to describe typical characteristics of each sub class is constructed. Furthermore, design information represented by general real number, sections and fuzzy sets is processed in the same way. Product type is determined by adopting inexact reasoning including fuzzy reasoning and evidential theory. The above method can be used as reasoning strategy for solution-seeking problem of intelligent design system and it can realize automatic knowledge acquisition. Through an illustration of type selection, the validity of this method is demonstrated.

Aiming at the remarkable problem confronting individual Q control chart during start-up phase-poor detection ability, a quality control chart improving initial performance of individual Q control chart is presented. This chart is established on the basis of Bayesian forecasting and dynamic model and is applied to a stable process during which process variance is unknown. Performance ofthis chart when the process was in a statistical stable state and the mean of the process had a drift and its effects when Bayesian dynamic models have different pre-estimated values are discussed. The results indicate that property of this chart can be applied to monitor the start-up phase during stable process well, which compensates the drawbacks of Q control chart.

A method to evaluate spatial straightness errors adopting particle swarm optimization (PSO) is proposed. According to minimum zone condition, mathematical model of spatial straightness together with the optimal objective functionis set up. The principle and implementation techniques of PSO are introduced and then particle swarm optimization algorithm is used to search the optimal solution. Illustrations show that PSO method is capable in evaluating nonlinear optimization problems such as spatial straightness error and can obtain optimal solutions. It can be applied to deal with the measured data of spatial straightness obtained by three coordinate measuring machines (CMM).

Based on stable reliability\|based design theory and sensitivity analysis method, research on stable reliability\|based sensitivity design for compressive bar is carried out and a numerical method for reliability-based sensitivity design is presented. The changing rules of reliability sensitivity are obtained and the effects of design parameters on reliability for compressive bar are studied, which provides theoretic basis for reliability design for compressive bar.

In automobile industry, structural optimization related to crashworthiness and energy absorption capability is of great importance, which involves many parameters of material and structure. Conventional design, crash simulation and experiment can merely improve crashworthiness to some extent, but cannot achieve optimal performance in general. A new optimization methodology—Response Surface methodology, which develops in recent years worldwide, is adopted to study thin-walled structural optimization of crashworthiness combined with conventional optimization methods and nonlinear finite element program. Optimization results indicate that this method has high accuracy and validity.

Based on the importance of extracting differential signal in industryand aerospace control, an adaptive high order differential feedback controller (AHODFC), which is capable to extract high-quality differential signals and canbe applied to AC adjustable-speed system with varying frequency, is presented.Since in engineering application, it is easy to implement interface operation, data acquisition and port operation by VC++, VC++ is adopted to implement the control interface of AC adjustable-speed system with varying frequency. In addition, programming process of high-order differential controller algorithm is proposed as well as the interface operation of this adjustable-speed system. Through simulation and practical running, comparing with PID control, high-order differential feedback control has better control effect and robustness, andeasier to adjust parameters, which demonstrates that AHODFC has practicability and feasibility.

On the basis of meeting several hypotheses, a coordinate system with its origin at the center of volume is established, and force analysis of stratosphere airship is carried out. Based on seriatim explaining longitudinal forces and moments, state equation of longitudinal aerodynamic model for stratosphere airship under balance is set up. According to experimental flight data and shape dimension characteristics, controllability and observability are analyzed, and then the observer is designed. This observer solves contradiction between performance and physics of the state feedback of the model. Moreover, it also provides design reference for design of stable flight and automatic control of stratosphere airship.

During the development of a visual driving simulation system, scene modeling and management are of great importance, which directly affect the main performance parameters such as immersion, interaction and real time. According tothis system’s requirements, scene models are established by MultiGen Creator and OpenGVS is adopted as the management tool. Moreover, rules of scene organization and management are proposed, and some key technologies such as scene model import, camera following and collision detection, etc are discussed. All these technologies have been utilized successfully in system development and achieved satisfactory simulation results.

A high performance electromagnetic counter-force actuator is designedfor engine active vibration control system. Firstly, design requirement and structure principle of actuator are briefly introduced. Then, approximate calculation of its magnetic field is carried out. Transmission model of active force is simplified as a single free degree vibration system to calculate active force of actuator. Finally, active force is simulated with Simulink and performance experiment on active force is conducted by taking sinusoidal signal as input. The results indicate that this actuator can produce great force and has high performance, which is of great significance of the implementation of engine active vibration control system and development of other active control systems.

Aiming at the situation of low calorific value of life garbage and difficulty in classifying and collecting it in a short term in most of China’s middle and small cities, taking vertical hearth as a basis and adopting layering burning method, a new type of roller fire-grates garbage furnace,which is continuously burning controllable, is developed. In design, both the haze lamination processing technology and the fluid bed burning technology, as well as the revolving burning technology, are adopted. Furthermore, structure is also innovated. In addition, design gist of its key components is elaborated and experimental data analysis is conducted too. The experimental result indicates that this furnace has high burning efficiency and good practical effect.

A type of series-parallel single pole double throw (SPDT) switch with broadband and high isolation was designed and made up by utilizing several PIN diodes. First of all, the special PIN diode equivalent circuit models of open circuit and short circuit were set up. Then the circuit simulation and parameter optimization were carried out by using CAD software Serenade to get good results. In the end, the circuit plate-making plot and economically practical micro-strip switch were fabricated, and the qualification was reached by testing.

Under high speed, intermittent paper feeding system is a key sector affecting paper mould-cutting quality, and its performance will directly influence work speed and mould-cutting precision of the whole machine. Aiming at mould-cutting machine under various work speeds, quantitative analysis of position accuracy when paper feeding is under intermittence is conducted. With the increase of work speed, position precision of paper feeding trends to increase too. The way how to guarantee position precision of paper feeding under high speed and quality of paper mould-cutting is proposed too.

Firstly, importance of gyro rotor balance is briefly introduced. Under the precondition that there are no suitable static balance methods for gyro rotors with special structure, small mass and high accuracy, an existing static balance method utilizing pressure sensor to measure force is improved. This improvement enables measurement on static imbalance of centroid offset in 2D space to extend to 3D space. Through high-precision electronic balance substituting pressure sensor, balance accuracy is greatly enhanced and it is more suitable for rotors with small mass but high accuracy. Then, simple theoretic analysis and design of experimental plan and system are conducted. Finally, experimental data, analysis result and future prospect are achieved.

Milling machine numerical control transformation may greatly enhance automatic capability and productivity level of equipments and fulfill the higherrequirements of enterprises on equipments. Through plan analysis of XA5032 milling machine transformation and design calculation of feeding transmission system, by adopting WA-21M NC system, NC transformation of milling machines is completed; selection principle and selection plan of NC system, servo electrical machinery choice, electrical system NC transformation plan and system control softwarecomposition and work principle are elaborated. After transformation, step precision in X,Y,Z is 0.005,0.005,0.01 mm/setp; axial location accuracy is 0.015 mm; repetition location accuracy is 0.008 mm. Processing precision and productivity are greatly increased, which demonstrates the success of transformation. Meantime, it provides a feasible way for enterprises to enhance rate of NC.

Customization design is regarded as an effective way to solve the conflicts in Mass Customization (MC) and rapidly complete design of product which fulfills customers’ individual requirements best. Taking design of footwear products as an example, a customization design methodology based on extensible change is presented. Firstly, a compound element model, used for change and consisting of conflicts, is established. Then a condition basis element is obtained by discomposing the results in the compound element, and utilizing correlation function to express fixed values. Finally, through relationship computation of theoretic value and practical value, the adaptable degree is achieved. Extensible change firstly conducts model analysis. It employs extensible method to seek the possibility of extending the research targets and then regulation to create is proposed. By exchanging, disposing, copying and so on, it solves the conflicts.

After discussing demand characteristics of footwear product (FP), four fundamental types of mass customizations (MC) of FP are presented. Then technical system of MC of FP is constructed. This paper focuses on development design technology of MC of FP, which provides a solution for shoe enterprises to realize MC manufacture mode.

Research on mechanical behavior of creeping capsule endoscope during intestine peristalsis is carried out through simplifying peristaltic intestine into incompressible elastic membrane, combining with membrane stress equations ofrevolving shell. Then numerical analysis is conducted. The analysis indicates that push force of peristaltic intestine to capsule endoscope is proportional to square of capsule endoscope’s diameter; furthermore, in consideration of patients’ feeling and possibility of succeeding inspection, diameter of capsule endoscope should be 7-15 mm; viscous resistance is also found to have linear relationship to the endoscope’s diameter and length when assuming capsule’screeping velocity constant, although the ratio is very small.

Industrialization of electrical vehicle is confronted of the problemsof performance, cost and reliability. As the first type of electrical vehicle, HFF6112GK50EV bus is listed on the catalogue of vehicle product bulletin of National Development and Reform Committee. During the research of key technologies of such bus, the problems above are sufficiently considered. Key technologies of electric vehicle include power system, vehicle body structure design and analysis, overall vehicle control and energy management system etc. The experiment results of research on the above key technologies show the vehicle power performanceand energy economic performance both exceed targets prescribed on the contract while the cost of overall vehicle is effectively controlled. This bus has passed 5 000 km reliability test and now is under test of public traffic operating condition.

Firstly, definition, characteristics, meaning and framework of the theory of Networked Group Innovation (NGI) are presented. Then, this paper focuseson the definition, three substantiality factors, and implementation flow of NetBrainstorm and application of TRIZ theory in the process of NGI. Finally, development environment and general Scheme’s design of NGI application system are put forward. Taking Net Brainstorm and TRIZ theory as core, NGI merges traditionalinnovation technique and idea with net technology, and can offer necessary technical support for product development, technology innovation, product sale and even innovation problem in management. The embedded TRIZ tools and courseware of innovation methods and thoughts can be utilized as creativity training tools foremployees.