Abstract: A web-based collaborative design advisory system for designing micro products is being
developed, which is based on use of both knowledge and rules. The system is aimed at helping
designers to assess/optimise the design of micro products to be manufactured with micro-forming.
The Microsoft C# programming language, ASP.Net technique and Microsoft Access database
system have been used to develop this system. The system is composed of various assessment
modules such as product geometry features, forming processes, materials, machines, tools and cost
assessment modules. Clients can use/browse the user interface of the integrated system through the
internet to import a CAD design model and define design parameters. The system is not only able to
assess the client’s design but also to generate preliminary process plans for the selected
micro-forming processes. A micro-pin design is used as an example to test the capability of the 1st
prototype system. With such a system, some advantages such as increasing the design efficiency in
the web-based collaborative design environment have been identified.
Abstract: Aiming at the characteristics of the product design team under internet environment, the
intelligent resource selecting method through price is put forward. Based on this, the evaluation
model of the product design team under internet environment is established, and meanwhile, the
practical case is introduced to provide an effective method for the optimization of the intelligent
Abstract: Most of workflow management systems in the market are based on centralized defining
in the organization. Further more, they have poor ability to describe the complex process, and have
difficulty to deal with the business process share between cross-organizations. To support virtual
and cross-organizational workflows in distributed environment, WfMSs must realize
cross-organizational and distributed management to improve the dependability and extensible etc.
To solve these issues, a Web-based lightweight process modeling system has been developed in this
paper. This system is based on Java and XML technology, and provides friendly GUI which is easy
to be used. The model document can be saved in XML format, so the interoperation between
different workflow products becomes easy. This system establishes the base for enacting the
Abstract: Facility layout plays an important role in the performance of manufacturing systems.
Firstly, this paper describes the derivations and classification of facility layout problem (FLP). The
concepts of static facility layout problem (SFLP), dynamic facility layout problem (DFLP) and
robust layout problem are introduced, and their main performance characteristics are compared
with each other. Then, the procedure of rearrangement costs in DFLP is proposed. Some main
characteristics of SFLP and DFLP, DFLP and robust layout are compared respectively. Lastly, the
difference and connection among SFLP, DFLP and robust layout are analyzed. The research results
indicate that the dynamic facility layout and robust layout are suitable for the dynamic and
changeable manufacturing systems. The method for development of DFLP and its implementation
are presented based on SFLP and robust layout.
Abstract: HFC (Hierarchical Fair Competition) model is a kind of sustainable EA based on
hierarchical search. On the basis of studying the sustainable evolutionary theory of HFC model
deeply, in the HFC model the admission and export threshold are proposed to divide all fitness
grade. And it is suggested that both static and active thresholds is used by the complication of
different problems. In addition, through analyzing the parameters and topology space of HFC
model, it is gained to the organize framework and detailed algorithm structure. Finally, it is proved
by exercise that HFC model can maintain the diversity of population and assure the fair competition
during individuals effectively.
Abstract: Based on feature modeling technology, a method of manufacturing process flow
reasoning of micro device is presented to support the top-down design flow. The knowledge of
micro device is hierarchically organized to construct the ontology-based knowledge database that is
combined with the expert system by an interface. With the support of process databases, the
manufacturing process flow is derived by process reasoning.
Abstract: Root-cause identification and product quality characteristic modeling are key issues for
improving product quality and the productivity of manufacturing process. The quality characteristic
model, which indicates the influence of the dominate root-causes on the product quality
characteristic, is the basis for quality control. In this paper an approach for quality characteristic
modeling based on Support Vector Machine is presented. The selections of parameters and the
Kernel function are discussed. The presented approach is applied for analyzing and predicting the
quality of inertial gyroscope.
Abstract: Motorized spindle is one of the core parts of high-speed machine tool, to a great extent,
its thermal characteristics determine the thermal stress and thermal deformations, therefore the
research on thermal characteristics is of great significance to increase the accuracy of high-speed
machine tool. In this paper, the heat generation developed in the built-in motor and the bearings is
calculated. The motorized spindle is modeled and its thermal characteristics analysis by finite
element method is done using ANSYS software, in the foundation of analyzing its configuration
and heat transfer. The variation regularity of its temperature-rise and temperature field is also
summarized. Thereby it provides a powerful theoretical basis for reducing temperature–rise,
calculating thermal deformations and improving working conditions.
Abstract: A crab-like octopod robot is introduced in this paper. The body structure of the robot is
simuliar with a real crab. Each leg has three jionts which are driven by servomotors. The control
system is a distributed hierarchical system with a top layer as gait generator and a bottom layer as
servomotor controller. The bottom layer has enght individual control units every of which can
control three servomotors using PID control method. The sensor systerm is composed of force
sensors mounted at the end of the leg and a inclinometer provides pitch and roll angles of the body.
Abstract: The fingertip force sensor is the key for the complex task of the dexterous underwater
hand, in order to safely grasp an unknown object using the dexterous underwater hand and
accurately perceive its position in the fingers, a sensor should be developed, which can detect the
force and position simultaneously. Furthermore, this sensor should be used underwater. It is
difficult to employ the accustomed calibration method for the characteristic of the fingertip force
sensor, and the accustomed method is not able to assure the precision. A calibration method based
on RBF (Radial-Basis Function) neural network is introduced. Furthermore, the calibration system
and program are also designed. The calibration experiment of the sensor is carried out. The results
show the nonlinear calibration method based on RBF neural network assure the precision of the
sensor, which meets the demand of research on the underwater dexterous hand.