Jingkun Wang

Experimental Study for the Cutting Forces during Sawing Granite with Diamond Circular Saw Blades

The granite cutting processing using diamond circular saw blades is the most extensive application processing methods. The cutting force is measured at different cutting depth ap, sawing feed rate vf and linear velocity v when the granite is cut by diamond circular saw blade by orthogonal experimental method. And the sawing force empirical formulas relative to these three variables are educed. We can obtain the experimental results as follows. The radial force Fn is greater than the tangent force Ft when ap is smaller than the circular saw blade diameter. The corresponding Fn and Ft are all smaller as the feed rate is greater at the same circular saw blade diameter. The cutting forces increase obviously as the cutting depth increases at the same circular saw blade diameter and feed rate.

Research on Product Open Innovation Design Based on Knowledge

It is difficult for one enterprise to separately master all the knowledge related to its product innovation design. Aiming at this problem, open innovation is introduced to product design. Key technologies of product open innovation design based on knowledge are researched. Based on the ontology expression of internal innovation knowledge, external innovation knowledge and knowledge of innovation theory, open innovation design from function to structure is achieved by gradually indexing. Each functional structure is considered as a gene. Structure innovation design is optimized by cross evolution and variation evolution, achieving organic fusion internal and external innovative design knowledge.

GPS/DR Navigation Data Fusion Research Using Neural Network

It is well known that GPS can be used for localization and navigation in outside environment. Standard DGPS can be used to get an accuracy of under one meter. The precision improves but the cost is very high. The cheep single frequency GPS receiver is used in this paper to provide the positioning information. This paper proposes a new navigation data fusion method using neural network. DR (dead reckoning) navigation system can provide precise short term navigation information. But the error can accumulate over time without limitation. A BP neural network is employed to predict next sampling time GPS output and a new Kalman filter based data fusion method is proposed to do the navigation data fusion with GPS/DR system. Simulation is conducted to validate the proposed fusion method. The result shows the potential of this fusion method for outside used mobile robot navigation.

The Application of Product Variant Design Based on Case-Based Design in the Development of Stone Equipments

As the actual design process and CBD process have collateral corresponding relation, CBD accords with the actual design process of deviser. This paper studies the application of CBD technology in product variant design. The basic resolution model of variant design is established, and the instance of products variant design is presented. With the application of variant design principle, the design intensity will be lightened, and the design time will be shortened. Therefore the variant design could accommodate the requirement of product diversification and client orientation.

Design Cost Fuzzy Evaluation between Virtual and Traditional Mobile Robots Design

75% to 80% of the mobile robots cost is determined by product design. Under normal circumstances, the quoted price of the product design is about 12% to 15% mobile robots price during the current market quoted price. The costs and the cost difference between virtual and traditional mobile robots design can be compared quantitatively by fuzzy evaluation using the product design cost function. The quantitative comparison results according to the mobile robots design showed that virtual design costs were significantly lower than traditional designs costs.

Conversion Topology and Reconstruction in the Field of Robotics and Machine Tools

The current domestic and international structure of reconfigurable robot and reconfigurable machine tool have been studied by us, their topological characteristics and methods of conversion were summed up, the method of reconfigurable machine to converter topology was found to achieve the purpose of reconstruction of the machine comparing the two different areas of the module types and functions.

The Application of CBR in Stone Equipment Variant Design

This paper studies the application of CBR (case-based reasoning) in stone equipments variant design. As the actual design process and CBR process have collateral corresponding relation, CBR accords with the actual design process of deviser. The basic resolution model of variant design is established, and the instance of products variant design is presented. With the application of variant design principle, the design intensity will be lightened, and the design time will be shortened. Therefore the variant design accommodates the requirement of products diversification and client orientation.

The Reconfigurable Design of Stone Grinding Equipment

Reconfigurable design is becoming more and more important in the product design. Based on the interchange and the assembled character of the module, module design is the main technology of carrying out reconfigurable design. Reconfigurable design system in this paper uses function and structure module, builds the virtual design floor to decompose and mapping the function and structure of the stone grinding equipment. Based on the equipment database created in Pro/Engineer software, this software can design, modify and assemble the module and the whole product according to the customer requirements. The application effect of this software is prefect.

An encoding scheme and reconfiguration algorithm for the Reconfigurable Machine Tool

Reconfigurable Machine Tool (RMT) has integrated the advantages of the special machine tools, machine tools and CNC machine tools. During the design process of the RMT, the rationality of the module encoding scheme is of great significance for the establishment and operation of the entire design systems which include the choice of modules, modules integration, enterprise production and management, etc. Started with the modules analysis of the RMT, this paper studies the composing modules features in detail. Then the module encoding system for the RMT is divided into three parts which consisted of the main module codes, module interface feature codes and module drawing management codes. All of the three parts establish the modular encoding schemes for the RMT. The general process of the modules selection and the selection strategy for the analysis of the module choice problem is studied in this paper, and the corresponding mathematical description is also made out. Based on the linear memory structure, the rapid retrieval for the qualitative attributes is achieved. As to the quantitative attributes, the similar factor in the fuzzy math is introduced. Then the fuzzy question of finding the nearest module to the destination module can be solved in the quantitative method which considered all the various attributes. The module selection algorithm processes and examples for the RMT are presented in this paper.

Quantitative research for virtual mobile robot design cycle based on PERT

75% to 80% of the mobile robot cost is determined by robots design, and to a large extent the efficiency of the production of robots and their performance are also determined. Quantitative evaluation of the virtual design cycle has been plagued robot designers. In this paper, CBD technique is used to design the mobile robots. Program Evaluation and Review Technique (PERT) is used to compare quantitatively the design cycle between virtual design and traditional design. By way of comparison between the virtual design and traditional design used in the design process for the mobile robots, virtual design cycle was shortened the design cycle by more than 40 percent. And at the circumstances of same design cycle, the completion probability of using virtual design is much higher than the designs of using traditional design.