Tài liệu Computer-Aided Design Engineering and Manufacturing P2 pptx

... decision cycles design- feedback-choice and setting-testing-fitting closed for product and process. Improvements are related to innovations in computer-integrated manufacturing and engineering (CIME), ... model, simulate, animate, and analyse processes in manufacturing and material handling. The code can be exploited to support investment decision, to verify design of manuf...

Ngày tải lên: 13/12/2013, 01:15

... 0 and σ o = 1 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 ... 18.1 and ρ is the variance shift magnitude in σ as defined in Table 18.3. TABLE 18.6 Comparisons between C-NN and Acosta’s CUSUM and EWMA (a) Comparisons between C-NN and Acosta’s C...

Ngày tải lên: 22/12/2013, 21:18

... handling discrete inputs and outputs (that is, on-off type signals), while today's systems can accept and generate analog voltages and currents as well as a wide range of voltage levels and ... relay and switch logic was cumbersome and time consuming to modify. Wiring had to be removed and replaced to provide for the new control scheme required. This modification was diffic...

Ngày tải lên: 22/12/2013, 21:18

... by substitution into the differential equation and, as expected, are found to be -2 and respectively. Then x(t) = -2 + + + + and the constants and are determined by the three initial conditions. The ... with the conclusion that -1-j 2 Comparison of Eqs. (3.8) and (3.11) and the result for B show that we have two possible ways to assign a and so that we match the form of Eq. (...

Ngày tải lên: 22/12/2013, 21:18

... identification, and estimation. Monitoring and diagnosing play a very important role in modern manufacturing. This is because manufacturing processes are becoming increasingly complicated and machines ... 14.3 Monitoring and Diagnosing Manufacturing Processes Using Fuzzy Sets 14.3.1 Using Fuzzy Systems to Describe the State of a Manufacturing Process For monitoring and diagn...

Ngày tải lên: 13/12/2013, 01:15

... attribute A1,A2,A3,…, An, AND there is manufacturing time T and cost M, THEN process P of capabilities C1,C2,C3,…,Cm, AND processing time Tp and cost Mp is used. where Tp T and Mp M.ՅՅ © 2001 by ... bottleneck is the acquisition and representation of process planning knowledge from design and manufacturing. An immediate task is to provide CAD modelling functions and tools...

Ngày tải lên: 13/12/2013, 01:15

... products p 1 and p 2 , representing 509 and 640 part types. Thus actual job type and order entity sets are P ϭ {p 1 , p 2 } and O ϭ {o 1 } with BEL-P(p ␲ ) ϭ o 1 for ␲ ϭ 1, 2. Due dates and product ... Elia, G., and Menga, G. 1994, Object-oriented design of flexible manufacturing systems, in Computer Control of Flexible Manufacturing Systems—Research & Development, S....

Ngày tải lên: 13/12/2013, 01:15

... Technologies Relevant to On-Line Parameter Design 17.3 Design of Quality Controllers for On-Line Parameter Design 17.4 Case Study: Plasma Etching Process Modeling and On-Line Parameter Design 17.5 Conclusion ... 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...

Ngày tải lên: 22/12/2013, 21:18

... weight matrix W_xh and W_hy , and the bias vector θ_ h and θ_ y . Step 3: Load the input vector X of a testing example. Step 4: Calculate and infer the actual output ... based on machine capabilities and the nature of the material composition of both the workpiece and end mill. FIGURE 16.3 Experimental setup. VM DESIGNER: Wei-Liang DESIGNER: Wei-Lian...

Ngày tải lên: 22/12/2013, 21:18

... as computer integrated manufacturing (CIM) and flexible manufacturing systems (FMS). However, many manufacturing processes involve some aspects of metal cutting operations. The most crucial and deter- mining ... and the estimated value of the spindle and feed current, namely, S i and F i (i = 1, 2, . . . , 6) are outputted. Second, the spindle and feed current detected are p...

Ngày tải lên: 22/12/2013, 21:18