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sơ đồ 1 cơ cấu tổ chức bộ máy quản lý công ty

Kwang hee nam AC motor control and electrical vehicle applications

Kwang hee nam AC motor control and electrical vehicle applications

Điện - Điện tử

... 57 59 61 64 67 68 69 73 78 78 78 80 85 85 85 90 93 94 95 96 99 10 0 10 1 10 2 10 9 10 9 11 0 11 5 11 7 11 8 11 8 11 9 12 1 12 2 12 2 12 3 12 6 vii Permanent Magnet AC Motors 6 .1 PMSM and ... 16 5 16 5 16 7 16 7 16 8 17 1 17 3 17 4 17 4 17 6 17 7 17 8 17 8 18 4 18 6 18 7 18 9 19 1 19 7 19 7 200 200 2 01 202 203 208 209 210 Loss-Minimizing Control 8 .1 Motor Losses ... 2 81 282 283 283 284 286 287 289 2 91 11 Vehicle Dynamics 11 .1 Longitudinal Vehicle Dynamics 11 .1. 1 Aerodynamic Drag Force 11 .1. 2 Rolling Resistance 11 .1. 3 Longitudinal Traction Force 11 .1. 4...
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Design Issues for Enterprise Deployment of Application Servers

Design Issues for Enterprise Deployment of Application Servers

Anh văn thương mại

... security features are dependent on implementation within the application CORBA supports two levels of security in order to support both security-unaware applications (Level 1) and security-aware ... security because it is assumed that the application is completely unaware of security mechanisms All security mechanisms are handled at a lower level within the ORB, or even outside of page 11 8 ... trusted third party In a large and complex enterprise environment, achieving comprehensive end-to-end security can be complicated by the existence of different security domains Security domains can...
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design issues for MEMS 1

design issues for MEMS 1

Vật lý

... trưng (L) Kn = λ L Kn < 01: liên tục 0, 01: 0, 01 < Kn < 0 ,1: trượt 0 ,1 < Kn < 10 : chuyển tiếp Kn > 10 : Phân tử tự Linh kiện MEMS: λ ~ 0 ,1 L ~ 2μm ⇒ Kn ~ 0,05: dòng khí trượt cấu trúc Hằng số Webe ... μN Thời gian s s Khối lượng Kg Kg Áp suất (ƯS) N/M2 10 -6 μN/μM2 Khối lượng riêng ố Kg/M3 10 -18 Kg/μM3 Điện tích C 10 12 pC Cường độ dòng A 10 12 pA Thế V V Sai số tính toán gồm giới hạn xác dãy ... integration Kết luận/Conclusions 4 .1 Mở đầu 4 .1. 1.Vai trò ý nghĩa thiết kế ế ế Phân loại linh kiện theo mục tiêu thiết kế Thể khía cạnh định hướng công nghệ Thể khía cạnh làm công cụ nghiên cứu Thể khía...
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design issues for MEMS 2

design issues for MEMS 2

Vật lý

... +1, j ⎝ ∂y ⎠ i 1, j ≈ Δx ui +1, j +1 − ui +1, j 1 ⎛ ∂u ⎞ ≈ ⎜ ⎟ Δy ⎝ ∂x ⎠ i +1, j y yi +1 yi yi -1 ui 1, j +1 − ui 1, j 1 ⎛ ∂u ⎞ ≈ ⎜ ⎟ ∂x ⎠ i 1, j Δy ⎝ −u −u +u u ⎛ ∂ 2u ⎞ ⎜ ⎟ ≈ i +1, j 1 ... tính: ⎧ a11x1 + a12 x + + a1N x N = b1 Hay: AX = B Với: ⎪ a x + a x + + a x = b ⎪ 21 22 2N N ⎨ ⎪ ⎪ a N1x1 + a N2 x + + a NN x N = b N ⎩ ⎛ a 11 , a12 , , a1N ⎞ ⎛ x1 ⎞ ⎛ b1 ⎞ ⎜ ⎟ ⎜ ⎟ ⎜ ⎟ a 21 , a22 ... = ( ‐4 4 ‐2 ‐2 ‐2 w9 − 4w1 + 6w0 − 4w5 + w 11 Δ4 w10 − 4w3 + 6w0 − 4w7 + w12 = Δ4 ∂y ‐4 ‐2 6 ‐4 ‐4 1 ) w2 − 2w1 + w8 − w3 − 2w0 + w7 + w4 − 2w5 + w6 Δ4 ‐8 ‐8 20 ‐8 ‐8 1 4.3 Mô hình hóa mô 4.3.2...
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Brushless Permanent Magnet Motor Design- P1 pptx

Brushless Permanent Magnet Motor Design- P1 pptx

Thiết kế - Đồ họa - Flash

... Conclusion vii 96 96 97 97 97 98 99 99 10 1 10 3 10 3 10 6 10 7 11 0 11 2 11 3 11 3 11 5 11 7 11 8 11 8 11 8 11 8 12 0 12 1 12 1 12 1 12 2 12 2 12 3 Chapter Design Equations 12 5 Design Approach Radial Flux Motor Design ... PWM Summary 15 5 15 5 15 7 15 8 16 0 16 1 16 5 16 5 16 6 17 0 17 3 17 4 17 4 17 5 17 6 17 7 17 8 17 9 Appendix A List of Symbols 18 3 Appendix B Common Units and Equivalents 18 5 Bibliography Index 18 7 18 9 Preface ... parameters Performance Design procedure Summary Conclusion 12 5 12 6 12 6 12 7 13 0 13 1 13 5 13 7 13 7 13 7 13 7 14 3 14 4 14 5 14 7 15 0 15 0 15 0 15 0 viii Contents Chapter Motor Drive Schemes Two-Phase Motors...
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Brushless Permanent Magnet Motor Design- P2 ppt

Brushless Permanent Magnet Motor Design- P2 ppt

Thiết kế - Đồ họa - Flash

... Rg( H' ) Rc( H- ) Core flux density (T) Percentage air gap mmf (%) Figure 2.8a Figure 2.86 Figure 2.8c, X = 10 £ 3.98e6 3.29e6 3.26e6 4 .18 e5 4 .18 e5 4 .18 e5 0. 91 1.08 1. 09 90.5 88.7 88.6 26 Chapter ... Aft # A9 + A?o "T + (3 -16 ) ^12 where An = iVi^n, A22 = N24>22, and A12 = Ni4>i2 The coenergy store follows as = 1ALli\ + V2L2il + hi2L12 (3 .17 ) Comparing (3 .16 ) and (3 .17 ), the advantage of using ... stated mathematically as 01 = 011 + 012 02 = 022 + 0 21 where 0y is the flux linking the ith coil due to current in the jth coil Solving the magnetic circuit, these fluxes are 011 = 022 = Ri + R2\\Rm...
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Brushless Permanent Magnet Motor Design- P3 potx

Brushless Permanent Magnet Motor Design- P3 potx

Thiết kế - Đồ họa - Flash

... and Laramore, 19 90; Liwschitz-Garik and Whipple, 19 61) (5 .11 ) Of these two pitch factors, (5.9) gives the largest reduction in back emf amplitude For example, if acp = 0.75, (5 .11 ) gives kp = ... additional 14 percent of a slot pitch For the motors considered in Fig 5.4 the maximum optimal magnet fractions are: (a) (2 + 0 .14 )/ (1 • 3) = 71 percent or 12 8 electrical degrees, (6) (4 + 0 .14 )/ (1. 5 ... from (5 .12 ), magnet shape and magnet-to-magnet leakage flux has a significant effect on cogging torque (Prina, 19 90; Li and Slemon, 19 88; Sebastian, Slemon, and Rahman, 19 86; Slemon, 19 91) The...
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Brushless Permanent Magnet Motor Design- P6 pdf

Brushless Permanent Magnet Motor Design- P6 pdf

Thiết kế - Đồ họa - Flash

... ripple instability that produces subharmonic ripple components for duty cycles above 50 percent (Kassakian, Schlecht, and Verghese, 19 91; Anunciada and Silva, 19 91) While this instability does not ... shown in Fig 7 .12 Combining these factors, (6.22) and (6.65) become Motor Drive S c h e m e s Back EMF Phase A ' I Current I 71/ 6 A 5K/6 2 71 Phase B iL J Ie 2 71/ 3 5 71/ 3 Phase C T0 • I 71/ 3 Torque ... information can be found in references such as Holtz (19 92), Anunciada and Silva (19 91) , Brod and Novotny (19 85), and Murphy and Turnbull (19 88) In motor drive applications, PWM is almost always...
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Brushless Permanent Magnet Motor Design- P7 docx

Brushless Permanent Magnet Motor Design- P7 docx

Thiết kế - Đồ họa - Flash

... detent, 7, 58, 11 2, 11 3, 11 7- Self inductance, 41, 42, 78-84 Shoes, 10 7, 11 8 Six step drive, 16 7 Skew factor, 11 9 Skewing, 11 8 -12 0 Skin depth, 88 Slot: definition, fraction, 24, 12 0, 12 9 leakage ... inductance, 80, 81 modeling, 19 - 21 Armature reaction, 89- 91 Axial flux topology, 12 2, 12 3 Back emf, 46, 59, 70-72, 11 3 -11 5 in axial flux design, 14 7, 14 8 in radial flux design, 13 1 sinusoidal, 12 1 trapezoidal, ... Triplen or triple-n, 17 0, 17 1, 17 3 Turn, 75 Teeth, 9, 10 7 Three-phase motors: A connection, 17 0 -17 3 Y connection, 16 6 -17 0 Topologies: axial flux, 3, 12 1 -12 3 radial flux, 3, 12 1, 12 2 12 0 Winding: chorded,...
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Brushless Permanent Magnet Motor Design- P4 docx

Brushless Permanent Magnet Motor Design- P4 docx

Thiết kế - Đồ họa - Flash

... the resistivity at a temperature T2, and ß is temperature coefficient of resistivity For annealed copper commonly used in motor windings, p(20°C) = 1. 72 41 x 10 ~8 flm, and ß = 4.3 x 10 ~3 °C - Using ... (Hanselman, 19 93) Pec = i *Lwch?co2ixlH2m (4.30) where a = 1/ p is the conductor conductivity and Hm is the rms field intensity value Since skin depth is defined as = V «¿IOC (4. 31) (4.30) can ... peak flux density crossing a slot Based on Fig 4 .18 and (4 .18 ) the peak flux density leaving the sides of the slot walls, i.e., the tooth sides, occurs at the slot top and is given by 1- 8 s| max...
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Design and Implementation of a Three-Phase Induction Motor Control Scheme

Design and Implementation of a Three-Phase Induction Motor Control Scheme

Cơ khí - Chế tạo máy

... block are equal to: • Gain_G1 = (4*xr)/(3P*xm) = 0.05 817 • Gain_G2 = 2/P = 0.5 • Gain_G3 = 1/ xm = 6. 711 • Gain_G4 = xr/(rr*xm) = 0. 016 3 • Gain_G5 = xm*rr/(lamdare_est*xr) = 17 7.72 The FO_controller ... Figure 7 .14 – The flow-chart for Encoder detection Figure 8 .1 – Experimentally measured PWM waveforms on the CRO 20 01 Thesis Project A10 Gareth S Roberts Need/Basis for the thesis project 1. 1 Project ... Design……………………………… 3 .1 The basic control format…………………………… 9 3.2 The existing motor controller……………………… 10 3.3 Current sensing module……………………………… 11 3.4 The speed sensor…………………………………… 12 20 01 Thesis Project...
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Researching Design Learning: Issues and Findings from Two Decades of Research and Development pot

Researching Design Learning: Issues and Findings from Two Decades of Research and Development pot

Thiết kế - Đồ họa - Flash

... Activities and Tasks 217 Chapter 11 Learning and Teaching 2 31 Chapter 12 Assessing Performance 245 Chapter 13 Learner Differences 269 Chapter 14 Research Methodology 287 Chapter 15 Concluding Reflections ... Research 13 9 Chapter Public Policy Research 15 3 Chapter Evaluating Curricular Initiatives 18 3 PART THREE: EMERGING ISSUES AND UNDERSTANDINGS 215 Chapter 10 Processes, Activities and Tasks 217 Chapter ... University of London, UK and KAY STABLES Goldsmiths, University of London, UK A C.I.P Catalogue record for this book is available from the Library of Congress ISBN 978 -1- 4020- 511 4-2 (HB) ISBN 978 -1- 4020- 511 5-9...
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Báo cáo khoa học:

Báo cáo khoa học: "TENSE GENERATION IN AN INTELLIGENT TUTOR FOR FOREIGN LANGUAGE TEACHING: SOME ISSUES IN THE DESIGN OF THE VERB EXPERT" pot

Báo cáo khoa học

... 511 - 516 .a Lawler, R.W and Yazdani, M (Eds.) (19 87) Artificial Intelligence and Education Norwood, NJ: Ablex Matthiessen, C (19 84) Choosing Tense in English USC Research Report 84 -14 3 University ... CA: Computer Soc IEEE, 12 1 012 15 Ehrich, V (19 87) The Generation of Tense In: G Kempen (Ed.), Natural Language Generation Dordrecht, The Netherlands: M Nijhoff, 423-44 12 9 - ... (Ehrich, 19 87; Fuenmayor, 19 87; Matthiessen, 19 84) The main features considered by the Domain Expert are listed below• Some of the features are already included in the exercise descriptors (1 to...
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stochastic modeling of manufacturing systems advances in design, performance evaluation, and control issues - g. liberopoulos

stochastic modeling of manufacturing systems advances in design, performance evaluation, and control issues - g. liberopoulos

Kế hoạch kinh doanh

... p2 [ (1 + 2/P ) (1 + 1/ P )] e2p+P (eP 1) R/r2 1/ P 1/ R up p1 (1 + 1/ P ) r1 (1 + 1/ R) P/p2 Tup Tdown Weibull r2 [ (1 + 2/R) (1 + 1/ R)] e2r+R (eR 1) P p Log-normal ep+P /2 er+R /2 (1 + ... solutions, not just one Refer to Figure 11 for an illustration of this process J MacGregor Smith 18 11 i 12 i1 i i2 i 22 11 i 21 12 21 i1 i2 i i 22 i3 32 31 Fig 11 Many explanations possible for i ... (1 + 1/ P ) (1 + 1/ P ) (1 + 2/R) (1 + 1/ R) (1 + 1/ R) 2 eP eR2 (gamma) = ep+P /2 (log-normal); Tdown = r (1 + 1/ R) (Weibull) R (gamma) = r = er+R /2 (log-normal); (1 + 2/P ) (1 + 1/ P...
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essential issues in soc design - designing complex systems-on-chip - y. lin (springer, 2006) ww

essential issues in soc design - designing complex systems-on-chip - y. lin (springer, 2006) ww

Kỹ thuật lập trình

... Hua University, Taiwan A C.I.P Catalogue record for this book is available from the Library of Congress ISBN -10 ISBN -13 ISBN -10 ISBN -13 1- 4020-53 51- 7 (HB) 978 -1- 4020-53 51- 1 (HB) 1- 4020-5352-5 ... − 1) π p (2n − 1) π q ( p ) (q ) ∑∑ x(m, n) × cos × cos 16 16 m =0 n =0 7 (2m − 1) π p ( 2n − 1) π q ∑∑ ( p) (q)Z ( p, q) × cos 16 × cos 16 p =0 q =0 (1) (2) where ≦ m, n, p, q < 8, α(0) = 1/ ... N - 1) × (N - 1) (SRH + N - 1) × (SRV + N - 1) (SRH + N - 1) × (SRV + nN - 1) (SRH + W - 1) × (SRV - 1) Table The comparison of different data reuse schemes for ME (the block size is 16 16 , the...
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Báo cáo hóa học:

Báo cáo hóa học: " Technology-assisted training of arm-hand skills in stroke: concepts on reacquisition of motor control and therapist guidelines for rehabilitation technology design" ppt

Điện - Điện tử

... Page 15 of 18 (page number not for citation purposes) Journal of NeuroEngineering and Rehabilitation 2009, 6 :1 92 93 94 95 96 97 98 99 10 0 10 1 10 2 10 3 10 4 10 5 10 6 10 7 10 8 10 9 11 0 11 1 11 2 11 3 11 4 ... Aachen) are acknowledged for their valuable comments on reviewing this paper References 10 11 12 13 14 15 16 17 18 19 20 Heart Disease and Stroke Statistics – 2004 Update [http:// www.strokeassociation.org/presenter.jhtml?identifier=3030387] ... total 41 chronic stroke patients [16 5 ,16 7 ,16 9] Virtual reality-based hand training systems that have been developed by Burdea et al are Rutgers Master II glove and Cyber Glove [17 0 ,15 ,17 1] Patients...
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Research Issues in Systems Analysis and Design, Databases and Software Development doc

Research Issues in Systems Analysis and Design, Databases and Software Development doc

Cơ sở dữ liệu

... - User centered design (Ehn, 19 88; Andersen et al., 19 90; Grudin, 19 91; Greenbaum & Kyng, 19 91; Clemont & Besselaar, 19 93; McKeen et al., 19 94; Smart & Whiting, 20 01) Standardization of development ... 1- 5 914 0-935-7 (hardcover) Advanced Topics in Database Research, Volume Copyright 2005 * ISBN 1- 5 914 0-4 71- 1 (hardcover) Advanced Topics in Database Research, Volume Copyright 2004 * ISBN 1- 5 914 0-4 71- 1 ... Incremental prototyping (Boehm, 19 88; Luqi & Zyda, 19 90; Iivari, 19 90a; Boehm et al., 19 98) Testing + + (Evans, 19 84) Documentation in code + + Literate programming (Knuth, 19 84) Commonly owned...
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