cim data base and data base management systems
cadcamcim radhakrishnan subramanyan and raju
... 245 CIM DATA BASE AND DATA BASE MANAGEMENT SYSTEMS 247 8.1 INTRODUCTION 8.2 DATABASE REQUIREMENTS OF CIM 8.3 DATA BASE 8.4 DATABASE MANAGEMENT 8.5 FEATURES OF A DATABASE MANAGEMENT SYSTEM 8.6 DATABASE ... Knowledge based engineering, production tools and communication tools • Relational database management systems for data management • Work flow automation and product life cycle management (PLM) systems ... FLOOR DATA COLLECTION SYSTEMS 20.1 INTRODUCTION 20.2 SHOP FLOOR CONTROL 20.3 SHOP FLOOR DATA COLLECTION 20.4 TYPES OF DATA COLLECTION SYSTEMS 20.5 DATA INPUT TECHNIQUES 20.6 AUTOMATIC DATA COLLECTION...
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chemical process design computer aided case studies
... I and I understand” enables effective education and gives enjoyment There are two types of active learning: problem-based and project-based The former addresses specific questions, exercises and ... problem of availability of sufficient design and technology data The development of the flowsheet and its integration is based on employing a systems viewpoint and systematic process synthesis techniques, ... Basis of Design 27 Economic Data 27 Plant and Site Data 27 Safety and Health Considerations 28 Chemical Process Design: Computer-Aided Case Studies Alexandre C Dimian and Costin Sorin Bildea Copyright...
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A framework of computer aided short run SPC planning
... historical data are coded with the proposed coding scheme and maintained in the reference database Machining resource information is classified and stored in the database to facilitate coding, and system ... portions: machining resources database and family formation reference database The supportive database is constructed modularly to facilitate information retrieval and system updating 1.4 Outline ... variable control charts include: • Average and Range (X bar and R) Charts • Average and Standard Deviation (X bar and S) Charts • Individual and Moving Range (X and MR) Charts Control charts mentioned...
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công nghệ Computer Aided Engineering (CAE)
... computer systems that analyze engineering designs Most CAD systems have a CAE component, but there are also independent CAE systems that can analyze designs produced by various CAD systems CAE systems...
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ME-430 Introduction to Computer Aided Design ARM BRACKET - Pro/ENGINEER Wildfire 2.0
... element The handle snaps to the reference and an offset value appears in the graphics window Pick this surface as placement surface 11 Drag the reference handles onto the right and top surfaces ... appropriate Sketcher Tools to create and dimension the section as shown below , , , , , Click Type in 40 for the depth of extrusion Click Click and select Standard Orientation CREATE BOTH SIDES ... pick TOP datum plane, and set Orientation to Top Then click the Sketch button Click the Close button in the References dialog box Click the small forward > icon to expand, and pick Draw a horizontal...
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Tài liệu Computer-Aided.Design.Engineering.and.Manufacturing P4 ppt
... commercial monitoring and diagnosis systems available In general, monitoring and diagnosis methods can be divided into two categories: a model-based method and a feature-based method The former ... self-classification test (all the data are for learning and testing), the success rate is still 100% For the prediction test (first 13 sets of data are used for learning and the other sets of data are for testing), ... function defined over {t, f, u} (t represents true, f represents false, and u stands for uncertain) Let mg = {Li: li} and mg′ = {Mi: mi} and form a matrix {( } ) ( M = T Li / M j : li m j , where T Li...
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Tài liệu Computer-Aided.Design.Engineering.and.Manufacturing P3 ppt
... techniques and the discipline involved in designing the software tools (mostly being data base management systems) However, nearly all variant systems are virtually databases where both part families and ... group technology (GT) and the generative approach based on decision trees, decision tables, logic formulae, knowledge bases, and expert systems [Chang and Wysk, 1985], [Alting and Zhang, 1989], [Gupta, ... machine, a shaper, and a lathe Data about these machine tools with related cutting tools are stored in machine tool and cutting tool files and process capability files in the data base Those files...
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Tài liệu Computer-Aided.Design.Engineering.and.Manufacturing P2 pptx
... concurrent parts feeding systems and dedicated joining devices; and • assembly stand, namely, a workstation with piece placing and parts feeding fixtures, pick-andplace mechanisms, and joining units ... assembly stations with related parts and fixtures logistics and robotics; and • assembly cell: a servoed and fixtured posture, with appropriate feeding systems and one (or more) instrumental robots ... design, manufacturing, and finance systems To reach more comprehensive assessments, issues are stated by collecting and comparing properly standardised indices and by tracking and acknowledging properly...
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Tài liệu Computer-Aided.Design.Engineering.and.Manufacturing P1 docx
... material handling devices, buffers, etc.) and software (information flow, data base content, etc.) Moreover FMS control should offer adaptive and dynamic features to absorb internal and external ... LOS(jk) and ROS(jh) ϭ ROS (jk) and JSTATUS(jh) ϭ Ready for assembling and SCI(jh) ϭ 0} and {for each w␦ ʦ W | w␦ ϭ w␣ and (w␦, w) ʦ A ᭚ WEI [(w␦, w)] jobs jh | BEL-P[LOS( jh)] ϭ w␦ and ... configuration (F(t)) and the current residual time to the next job input (RT(t)) The data base object possesses the methods for building, using, and updating the relational data base The communication...
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Tài liệu Computer-Aided.Design.Engineering.and.Manufacturing P8 pptx
... chart, called C-NN (C stands for “combined” and NN means “neural network”), is composed of several modules — data input, data processing, decision making, and data summary The data input module takes ... µo = and σo = and δ = 0, ±1, ±2, ±3, and ±4 These observations were fed directly to the network and trained by a standard backpropagation algorithm to achieve a desired output between –1 and The ... Step Step Step Step Initialize the weight coefficients Randomly select a data entry from the training data set Feed the input data of the data entry into the network under training Calculate the...
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Tài liệu Computer-Aided.Design.Engineering.and.Manufacturing P7 ppt
... is relatively standard, and consists of three operations [Liepins and Hilliard, 1989]: (i) evaluation of individual fitness, (ii) formation of a gene pool, and (iii) recombination and mutation, ... surface models [May et al., 1991; Riley and Hanson, 1989; Jenkins et al., 1986] and neural network models [Himmel and May, 1993; Kim and May, 1994; Rietman and Lory, 1993] The next two sections ... rather limited and fail to deal adequately with interactions, and (iii) more efficient and simpler methods of analysis are available In addition to the different approaches to “generating” data on product/process...
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Tài liệu Computer-Aided.Design.Engineering.and.Manufacturing P6 ppt
... Vibration data Revolution data FIGURE 16.6 Vibration and rotation signals flexible testing data set (Table 16.1) Therefore, a total of 128 pieces of data were used to evaluate the accuracy of ISRR systems ... base includes two fuzzy rules: IF S is L1 and F is L1 THEN Ra is L1; IF S is MD and F is S1 THEN Ra is S1 Equation (16.26) 16.2.2.5 Step Determine a Mapping Based on the Combined Fuzzy Rule Base ... the two types of signals (i.e., rotation data and vibration data) These two types of data were connected to an analog-to-digital (A/D) board (the vibration data from the accelerometer sensor had...
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Tài liệu Computer-Aided.Design.Engineering.and.Manufacturing P5 ppt
... < ∨ ( ∧ ( x , w ) ) then ∆ = w if x s < w sj and x s ≥ ∨ ∧ x i , w ij s if x s < w sj and x s s i≠ s if x s ≥ w sj and w sj if x s ≥ w sj and w sj and ©2001 CRC Press LLC i≠ s i ij i≠ s i i≠ s ... 15.33, and the estimated value of the spindle and feed current, namely, Si and Fi (i = 1, 2, , 6) are outputted Second, the spindle and feed current detected are put into the logarithm, and are ... amounts of data analysis, we found that n3, n4, n5, and n7 are sensitive to tool wear, and they are shown in Figures 15.30 and 15.31 The above features were replaced by q1, q2, q3, and q4 , respectively,...
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Tài liệu Application of Genetic Algorithms and Simulated Annealing in Process Planning Optimization pptx
... 9.2.2.2 Machine (M) and Cutter (T) Selection For each OPT, a machine and cutter can be selected from the available machined and cutters in the job shop, based on the geometry and accessibility ... randomly selected from M-c and M-e and assigned to OPT3 to replace M-a It is then found that M-a is also the current machine used by OPT1, OPT4, OPT5, and OPT2 Among these OPTs, OPT1, OPT4, and ... information (machines, tools, and all the cost indices) is described earlier and the required OPTs and their machine, tool, and TAD alternatives are shown in Table 9.2 and the PRs between the OPTs...
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Tài liệu A Computer-Aided ppt
... 4.11 an interface between the knowledge base and the data base files must be employed for the retrieval of relevant data External data base files, where data searching must be done sequentially ... integration, ease of data accessibility and system flexibility are thus taken into account Data Content The data base files for recommending machining data required by the knowledge-based system have ... knowledge-based system have been described by Yeo, Wong, and Rahman [1991] In order to search and retrieve data from the work material data base files, the dbase-action frame structure shown in Figure 4.12...
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Tài liệu ME-430 INTRODUCTION TO COMPUTER AIDED DESIGNTORSIONAL ANALYSIS Using Pro/MECHANICA Pro/ENGINEER pptx
... for defining the load and since we will use Total Load at Point (TLAP) and Moment, the location does not matter Click on Datum Point Tool icon Pick on the surface (region), and locate the point ... procedure and select View Min 17 Click the Copy button 18 Enter the name as “displ” Enter the Title of Displacement Distribution Plot Click the Quantity tab, and change the type to Displacement, and ... Pick FRONT datum plane as sketching plane, and select Top then pick TOP datum plane in the graphics area Pick the necessary additional references, and use rectangle to sketch the following section...
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Tài liệu Thí nghiệm CAD (Computer-Aided Design) ppt
... tính đường biểu diễn Dữ liệu dùng để vẽ đặt ‘XData’ ‘YData’ >> set(h,'XData',[0 1 3]) >>set(h,'YData',[0 1]) Từ kết này, ta nhận thấy liệu ‘XData’ ‘YData’ biến thiên theo thời gian, cửa sổ đồ họa ... end of switch % ve thi close all; figure('Color','w'); for k=1:m hold on r1=r*k; mau=[rand(1,1) rand(1,1) rand(1,1)]; h=polar(theta,r1); © TcAD - 2003 19 Giáo trình thí nghiệm CAD set(h,'color',mau,'LineWidth',2); ... thị: >>xlabel(‘Time’) >>ylabel(‘Amplitude’) >>title(‘y1=sinx.cos2x and y2=sin(x^2)’) >>legend(‘sinx.cos2x’,’sinx^2’) y1=sinx.cos2x and y2=sinx sinx.cos2x sinx Amplitude 0.5 -0.5 -1 Time Hình 1.1...
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Tài liệu COMPUTER-AIDED DESIGN P1 ppt
... significant advantages over conventional data management PDM is not simply a database holding CAD data as a library for interested users PDM systems offer increased data management efficiency through a ... components: process management, memory management, input/output operations, and file management The operating system schedules and performs input/ output, allocates resources and memory space and provides ... provides monitoring and security functions It governs the execution and operation of various system programs and applications such as compilers, databases, and CAD software Operating systems that serve...
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Tài liệu COMPUTER-AIDED DESIGN P2 docx
... program itself, and pointers provide flexible referencing to data The body of the program uses commands to execute the desired functions The commands in Pascal are based on English and are arranged ... in 2D or 3D, can be ambiguous and difficult to understand Because mechanical and other engineering designs often involve three-dimensional parts and systems, CAD systems that offer 3D representation ... main body of the program and the declaration of variables C, like Pascal, can use various types of data and the programmer can also define new data types C has a rich set of data types, including...
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Tài liệu A systematic computer-aided approach to cooling system optimal design in plastic injection molding docx
... the new best point x0, and set f ðx0 Þ ¼ f ðxk Þ and go to step (iv) Otherwise, generate a random number bA[0,1] and calculate the probability as START Set start point and control parameters ... zone but only the boundary surfaces of the mold and cooling channels Hence mesh data preparation is greatly simplified and less computing time and storage is needed for the same level of accuracy ... þtc where tf, tc, to are filling, cooling, and mold opening time, respectively, and q1, q2, q3 are instantaneous heat flux values during filling, cooling, and mold opening time, respectively The value...
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