A new dynamic analysis method is proposed for increasing the universality and simplicity of dynamic response analysis. Mechanisms were decomposed into a series of ordered-SOCs(single opened chains). According to their forward order, firstly put imaginary inputs to the SOCs whose constraint factor is below zero, and then the kinematic equations with minimum dimension can be obtained after performing kinematic analysis on other ordered-SOCs. The universal dynamic analysis equations were deduced based on the principle of virtual work. Given the special value of generalized velocity and generalized acceleration, all the coefficients of the equations can be computed using the ordered-SOCs method, therefore the dynamic analysis equations can been acquired. The dynamic analysis equations are compact, and their dimensions are equal to the freedom degree of the mechanism. The numerical example of a 3-degree of freedom planar parallel mechanism has demonstrated its efficiency.

To fulfill the requirements of customization and global competition, mass customization (MC) is necessary. The product family design based on common product platform is an available means for mass customization, and the planning of product platform is the core and focus in design methodology of product family at present. Platform design based on model variable is an effective method. Aiming to a series of standard variable\|based product platform planning, a method of optimization was adopted to fulfill some customer requirements. Without determining product common parameters and variable attributes ahead, the proposed method focuses on increasing generality of product family under the precondition of fulfilling various customer requirements, and then determines the customized product attributes and their variable values, as well as the common parameters of product platform and their optimal values. This method of product platform planning is validated by a case study of belt conveyor design.

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The framework of product virtual prototype design(VPD) based on ACIS 7.0 is constructed according to the theory of quality-driven VPD. The visualized system in which the entities are translated from visualized databases by Open Inventor 2.0 and the original objects are rendered by Renderizer 2.5 is developed by C++ in LINUX platform. Moreover, a product information exchange model based on STEP standard is established. Before manufacture of physical prototype, all stages of product life cycle can be analyzed, evaluated, decided and revised, and finally integration of product data management and design procedures is implemented.

Uncertainty analysis was necessary in virtual experiment of engineering system since uncertainty of parameters in inevitable. Complexity problem was confronting uncertainty analysis of big-scale time-consuming calculation model. Here, a simulation approach based on Bayesian predictive model was proposed to predict the distribution function of prediction uncertainty, in which the parameter uncertainties were described in terms of probability density function and the expensive numerical model was approximated by its posterior distribution. A Taylor impact test demonstrates that the proposed method is efficient.

By combining reliable design theory and sensitivity analysis method, the reliable sensitivity of planar linkage mechanism accuracy is put forward. The computation method of reliable sensitivity design is proposed and then the changing rule of reliable sensitivity is provides. Finally, effects of change of design parameters on reliability of motion accuracy of planar linkage mechanism is analyzed, which provides theoretic references for design of planar linkage mechanism. 

A new type of automatic sampling system for small biochemical analyzer was developed to fulfill the small but high-accurate requirements of automatic biochemical analyzing system. Small linear actuator was utilized to sample automatically. Then the system's structure was presented according to the equipment's performance requirements. Based on test data analysis system, error compensation curve was obtained and corrected. The final test results show that the system achieves the expected performance index and meets practical demands.

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Disturbance of metal and other media on radio frequency signal has a great effect on the performance of passive UHF RFID system in application. By separating patch antenna from metal surface, a ground-independent RFID tag was constructed using 3D microstrip antenna model, but manufacturing complexity and cost of RFID tag structure were increased. Through improving the feeding mode, the traditional microstrip antenna with single unbalanced feed was changed into a new one with dual balanced feeds, and the RFID tag became smaller because its 3D antenna was simplified into a planar one. The new antenna can not only decrease the complexity of manufacturing the RFID tag, but also supply tag's compatibility to different environment material in application.

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Visualized research and analysis of the flow patterns within a high\|
pressure homogenizing valve were conducted by using a commercial Computational F
luid Dynamics code. The result given by CFD model and simulation accorded with t
he previous experimental and theoretical investigations. Based on the result, a mathematic model for computing pressure gradient versus valve gap was presented. Genetic Algorithm and Non\|linear Regression Algorithm were adopted to validate the feasibility of this mathematic model. The modeling and computing results provided detailed information on the mechanical stresses and visualized the flow patterns that were usually difficult to demonstrate by general physical tests in small disruption valves, which involved constructive suggestions on design and further work of flow pattern study.

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