Research on the intelligent design system for investment casting die of aero-engine turbine blade based on knowledge

To solve the problems in turbine blade investment casting die design process such as long design time,lacking of expert experience and low level of intelligence,knowledge-based engineering (KBE) was introduced in the turbine blade investment casting die design field. The key technologies of the intelligent design method were researched and a prototype system was developed. A hybrid reasoning model was prompted in which case-based reasoning (CBR) was applied to conceptual design and rule-based reasoning (RBR) was applied to parts design after research the design process and domain knowledge of casting die. In the conceptual design stage,a retrieval model which integrated nearest neighbor approach and knowledge-based retrieval approach was prompted to improve the retrieval efficiency. Meanwhile,RBR was used to modify the retrieval result. The practical application results indicate that this system can reuse the expert experience efficiently and heighten the die design efficiency and quality.

An Intelligent Design of Electron Lens System

At present, the main work of electron optical system CAD is solving equations and calculating mumerical values. However, the design perhaps needs more inference and expertise than numerical calculations because the structure of electron lens system is complicated. In this paper, a primary expert system is applied to design the electron lens system intelligently. This expert system is combined with SEU-3D program which is used to simulate the electron optical system to optimize the electron lens systems. In spite of this, the expert system which is established in this paper can also be used to diagnose the electron lens system. Although the knowledge base is small and rules are not abundant, this paper has used this system to obtain some very useful results. The initial success with this system suggests that further work need to be done whether more rules and knowledge will be added to extend the ability of expert system.

Expert System for 3D Collar Intelligent Design

A method to set up 3D collar prototype is developed in this paper by using the technique of cubic spline and bicubic surface patch. Then the relationship between the parameters of 3D collar prototype and different collar styles are studied. Based on the relationship, we can develop some algorithms of transferring style requirements to the parameters value of the collar prototype, and obtain some generation rules for the design of 3D collar style. As such, the knowledge base can be constructed, and the intelligent design system of 3D collar style is built. Using the system, various 3D collar styles can be designed automatically to satisfy various style requirements.

Case-based intelligent computer aided design system of welding machinery

The procedure during complex system plan design of welding position-locating machine is studied in this paper. The main difficulties in designing welding position-locating machine utilizing computer are discussed as well. A method of case-based intelligent CAD system for welding position-locating machine ( WMICAD) is put forward through wide research on design methodology. Object-oriented programming method is also applied to Ms system. The basic idea and realizing method are described.

Research on the Design of Ecological Roof Based on Intelligent Management System

With the development of the times,the contradiction between human living and the natural environment becomes increasingly prominent.People pay more and more attention to the protection of the natural environment while improving the living standard.While,the emergence of the ecological roof can greatly improve the urban ecological environment and make full use of the architectural space.On the premise of analyzing the current status and significance of research on the ecological roof,this paper puts forward some ideas about the research on the design of the ecological roof with intelligent management system which can be used as a reference for the design of the ecological roof in the future,based on giving full consideration to the factors of ecological energy-saving,environmental protection,economic development,etc.,and summarizing the shortcomings of the traditional ecological roof.

A Research Review on the Key Technologies of Intelligent Design for Customized Products

The development of technologies such as big data and cyber-physical systems （CPSs） has increased the demand for product design. Product digital design involves completing the product design process using advanced digital technologies such as geometry modeling, kinematic and dynamic simulation, multi- disciplinary coupling, virtual assembly, virtual reality （VR）, multi-objective optimization （MOO）, and human-computer interaction. The key technologies of intelligent design for customized products include： a description and analysis of customer requirements （CRs）, product family design （PFD） for the customer base, configuration and modular design for customized products, variant design for customized products, and a knowledge push for product intelligent design. The development trends in intelligent design for customized products include big-data-driven intelligent design technology for customized products and customized design tools and applications. The proposed method is verified by the design of precision computer numerical control （CNC） machine tools.

In-plane micro-sized energy storage devices:From device fabrication to integration and intelligent designs

The rapid development of micro-electronics raises the demand of their power sources to be simplified,miniaturized and highly integratable with other electronics on a chip.In-plane Micro-sized energy storage devices(MESDs),which are composed of interdigitated electrodes on a single chip,have aroused particular attentions since they could be easily integrated with other miniaturized electronics,reducing the complexity of overall chip design via removing complex interconnections with bulky power sources.This review highlights the achievements in the device fabrication of in-plane MESDs,as well as their integration and intelligent designs.We also discussed the current challenges and future perspectives for the development of in-plane MESDs.

Intelligent design of investment casting mold based on a hybrid reasoning method

A hybrid reasoning model was proposed in which CBR(case-based reasoning)was applied to the conceptual design and RBR(rule-based reasoning)was applied to the detailed design after research of the design process and domain knowledge of the aero-engine turbine blade investment casting mold design field.In the conceptual design stage,the representation and retrieval technologies were researched which improve the retrieval efficiency.Meanwhile,RBR was used to modify the retrieval result.The experimentation shows that the approach in this study can be used to obtain a more satisfactory design result.

MECHANICAL PRODUCT EXTENSIVE INTELLIGENT CONCEPTUAL DESIGN

Based on extenics, an extensive functional information model(function-behavioral action-structure-environmental constraint) of the mechanical productintelligent conceptual design is developed, and the mechanism of theoretic structure solutions isproduced, the mapping relations between function-behavior and behavior-structure are analyzed. Themodel is applied to the filling material system's conceptual design to verify validity.

PERFORMANCE-BASED INTELLIGENT RESOURCE DESCRIPTION MODEL FOR INTERNET-BASED PRODUCT DESIGN

Issues on intelligent resource description and multiple intelligent resources integration for lntemet based collaborative design are analyzed. A performance-based intelligent resource description model for lnternet-based product design is proposed, which can help to create, store, manipulate and exchange intelligent resource description information for applications, tools and systems in Interact-based product design. A method to integrate multiple intelligent resources to fulfill a complex product design and analysis via lntemet is also proposed. A real project for improving the bearing system design of a turbo-expander with many intelligent resources in prominent universities is presented as a case study.

AN EFFICIENT ASSESSMENT METHOD FOR INTELLIGENT DESIGN RESULTS OF SHEAR WALL STRUCTURE BASED ON MECHANICAL PERFORMANCE,MATERIAL CONSUMPTION,AND EMPIRICAL RULES

Efficient methods for incorporating engineering experience into the intelligent generation and optimization of shear wall structures are lacking,hindering intelligent design performance assessment and enhancement.This study introduces an assessment method used in the intelligent design and optimization of shear wall structures that effectively combines mechanical analysis and formulaic encoding of empirical rules.First,the critical information about the structure was extracted through data structuring.Second,an empirical rule assessment method was developed based on the engineer's experience and design standards to complete a preliminary assessment and screening of the structure.Subsequently,an assessment method based on mechanical performance and material consumption was used to compare different structural schemes comprehensively.Finally,the assessment effectiveness was demonstrated using a typical case.Compared to traditional assessment methods,the proposed method is more comprehensive and significantly more efficient,promoting the intelligent transformation of structural design.

Leather personalized study design in intelligent customization

The rich and colorful leather design brings a broad stage of fashion design in the past, China＇s leather （leather） clothing brand single, old style, color： black, blue, is brown. The economic and cultural development, leading the fashion changes, the concept is also constantly promote the development of a new direction, to the consumer, aesthetic with the change of consumption concept, the fur （leather） apparel consumption presents a civilian, personalized, ideal trend, leather （leather） clothing to reflects personal charm and style of the clothing style, design aesthetic appreciation, knowledge and other aspects of the new technology and new materials to absorb human body art is to stimulate leather （leather） the change of clothing. With the continuous development of science and technology, intelligent garment customization to the majority of consumers, the effect of intelligent custom fur （leather） three direction costumes （fabrics, colors, styles） for innovative research, get a Of leather （leather） costumes to break the current leather （leather） styles of dull shape, rich leather （leather） and other clothing charm, for the fur （leather） costumes to all ages personality need to provide ideas and new development space.

Networking Intelligent Pressure Sensor Using Digital Lock-in Amplification Technology

Introducing a System-on-Chip （SoC） microcontroller （C8051F350） into a ceramic pressure sensor has resulted in the design of a intelligent sensor. An improved algorithm for digital phassensitive detection is used to perform lock-in amplification of the sensor signal. The compensation for the sensor error is realized by the detection of the sensor＇s supply voltage and working temperature. The system also has the function of short/open circuit fault detection and can ommamicate with other digital equipment through an RS-485 communication interface. In the design, full utilization of the SoC microcontroller＇ s internal resource results in the simple hardware structure. Experimental results show that the error of the sensor is less than 0.5% at range ratio 1 ： 10. Employing the microcontroller and using lock-in amplification algorithm are an effective method for achieving an intelligent sensor of slowly-varying physical quantities, thereby improving the measuring accuracy and performance.

Mitigating adjacent channel interference in vehicular communication systems

In the last few decades, dedicated wireless channels were specifically allocated to enable the development and implementation of vehicular communication systems. The two main protocol stacks, the WAVE stan- dards proposed by the IEEE in the United States and the ETSI ITS-G5 in Europe, reserved 10 MHz wide channels in the 5.9 GHz spectrum band. Despite the exclusive use of these frequencies for vehicular com- munication purposes, there are still cross channel interference problems that have been widely reported in the literature. In order to mitigate these issues, this paper presents the design of a two-stage FIR low-pass filter, targeting the integration with a digital baseband receiver chain of a custom vehicular communications platform. The filter was tested, evaluated and optimized, with the simulation results proving the effectiveness of the proposed method and the low delay introduced in the overall operation of the receiver chain. 2016 Chongqing University of Posts and Telecommunications. Production and Hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license

MODULE DEFINITION MODEL FOR MODULAR DESIGN AND MANUFACTU－RING OF HEAVY DUTY MACHINE TOOLS

The key techniques of modular design of heavy duty NC mathine tools are described. Amodule definition modelfor modular design and manufacturing of heavy duty NC machine tools isbulit and the essential composition of the module definition model (MDM) is discussed in detail. Itis composed of two models: the part definition model (PDM) and the module assembly model(MAM). The PDM and MAM are built and their structures are given. Using object-oriented know-ledge representation and based on these models, an intelligent support system of modular design forheavy duty NC machine tools is developed and implemented This system has been applied to thepractical use of Wuhan Heavy Duty Machine Tool Works

THE OBJECT-ORIENTED INTELLIGENT PROGRAMMING IN CAD/CAM

Design and manufacture organizations currently suffer from a number of problems that aignificantly affect their productivity.Despite their fragmented efforts to automate portioas of operations,they still suffer from 'islands' of designing and manufacturing automation,long lead time for semi-custom proposals and engineering work, lengthy cycles of product development and introduction into the market,and low morale due to boring,repetitive engineering and industrial design activities.Thereby,the integration of design and manufacturing poses to the CAD/CAM researchere a series of challenges.The paper introduces a methodology that allows for the integration of product design with manufacturing process planning and the application of a new software technology known as 'Object-Oriented Intelligent Programming' .The task is achieved through an object-oriented intelligent CAD/CAM environment where a design model from the CAD system can be analysed, and manufacturing process plans with specifications of machining can be automatically determined.The manufacturing information of a part is extracted from the 3D geometric model and the 2D engineering drawing,thus,both geometric and non-geometric attributes of a part can be obtained.

基于混合现实技术的舰炮装备智能保障系统设计

随着数字化、信息化、人工智能等技术的不断发展和应用,未来战争对武器装备保障的时效性要求越来越高。针对目前武器装备保障中存在的痛点和难点,本文以舰炮装备为对象,以装备保障为出发点,基于混合现实技术开展智能保障系统设计,为提高装备的保障效率和促进保障人员能力提升打下一定的基础。

运载火箭智慧设计发展思考

围绕运载火箭设计对高效能、高质量的迫切需求,对标数字化与智能化国际先进水平,提出我国运载火箭智慧设计的底层逻辑是在数字空间中构建运载火箭模型及参数的结构化表达,使用智能算法赋能设计环节,实现方案的智能快速优化设计。智慧设计包括两个核心要素:一是设计工具,包括学科工具的自主研发与应用,以及构建统一的数字化协同设计平台;二是基于大模型的智能优化算法。为实现智慧设计,将运载火箭总体设计发展分为3个阶段:传统设计、数字化设计和智慧设计。最后,介绍了运载火箭智慧设计技术发展的几个重要方向。

视觉传达设计下的文化创意产品智能交互系统探讨

视觉传达设计,即依托视觉元素以及相关的图形构建艺术场景,将其作用在文化创意产品的实践中,能够使此产品具备较强的吸引力。视觉传达设计背景下构建文化创意产品智能交互系统是适应智能时代发展方向的,文化创意产品智能交互系统的构建,能充分挖掘大数据资源、多方位开发系统工具、健全群智协同的规范化平台,全方位提高文化创意产品智能交互的效率,适应信息化、智能化下个人及社会对文化发展传播的需求。

矿区铁路生产调度指挥系统设计与应用

针对矿区铁路既有调度监督系统设备技术落后、行车组织效率低、劳动工作量大等问题,开展了生产调度指挥系统的设计工作,完成了生产调度指挥系统总体方案、架构、站场图主体界面、硬件、软件设计。通过设计应用,实现了铁路运输生产、调度指挥、维修维护等综合管理,显著提升了矿区铁路运输生产自动化、信息化、智能化水平,保障了运输行车安全。