Industrial Brushless Servomotors Episode 3 docx

... reactions of the audience. The lack of eye contact also prevents the audi- ence from assessing the intentions of the speaker. The audience gathers much from the eyes of the speaker in terms of emphasis. ... you often want the students to discover the in- formation on their own, because by discovering the ma- terial the students are much more likely to retain...

Ngày tải lên: 12/08/2014, 08:21

... CREATIVITY 83 Teaching Engineering - Wankat & Oreovicz C - combine R - reverse E - expand A - alter T - tinier I - instead of V - viewpoint change I - in another sequence T - to other uses Y - yes! ... do Creativity FIGURE 5-1 CONCEPT MAP OF PROBLEM SOLVING. Reprinted with permission of CEE, 13 , 132 , (1979). 64 CHAPTER 4: COURSE...

Ngày tải lên: 12/08/2014, 08:22

... high torque end. rpm 3000- 2000- 10 00- I 1 2 3 Torque Nm Figure 1. 9 Speed versus torque at various supply voltages Industrial Brushless Servomoters 1. 2 2 temperature are explained for ... spreadsheet. My hope is that this publication will be of Industrial Brushless Servomoters 1. 3 IO VDC Figure 1. 5 Unloaded motor at steady-state 1. 3 The loaded motor at s...

Ngày tải lên: 12/08/2014, 16:20

... is Industrial Brushless Servomotors 2. 2 3:l motor by parting company from the hub. Figure 2. 3 shows one of the most common, where the magnets are bound by fibreglass tape. Figure 2. 1 shows ... the cycle is Iav IM(1.0 x 2 + 0.5 x 3 + 0.7 x 3 + 0.5 x 3) = 0.44IM 16 The rms current over the same period is Irms V/I2M( 1. 02 ã 2 + 0. 52 ã 3 + 0. 72 ã 3 + 0. 52 ã 3)...

Ngày tải lên: 12/08/2014, 16:20

... e 36 0 Figure 2.10 Emf and torque for aY-connected squarewave motor 40 Industrial Brushless Servomotors 2 .3 Figure 2.8 Torque and backemf for the'a'phase 38 Industrial Brushless ... connection. Industrial Brushless Servomotors 2 .3 $O To - TM sin20 To is always positive and varies position, as shown in Figure 2. 13. sinusoidally with rotor To...

Ngày tải lên: 12/08/2014, 16:20

... Industrial Brushless Servomotors 3.2 74 determines the position of the shaft by adding or subtracting the number ... the shaft must start exactly from the position reached at the end of the 56 Industrial Brushless Servomotors 2 .4 In Figure 2.15, H will have about the same value in the two cases. However, ... rms 11.7 Torque constant KT Nm/A 1.02 0. 84 Resistance RL...

Ngày tải lên: 12/08/2014, 16:20

... 11 06 Industrial Brushless Servomotors 4.3 i 0 .63 2 V/R ,, , ,, , , , 9 o t O)m (0~ ~ , ,, , ~m Figure 4.7 (a) ... When the brushless motor is used for incremental motion, the motor rating may be affected by the relative values of the 108 Industrial Brushless Servomotors 4.3 cannot be used for the brushless ... 0.84 1.02 Max. continuous current Is A 5.4...

Ngày tải lên: 12/08/2014, 16:20

... case where F :/: 0 gives rzx - ff v/1 + A2 Industrial Brushless Servomotors 4.4 116 The roots of the quadratic are S "- - 2-'~e -+ 77 .2 TeT M When rM > 4re, there is no sinusoidal ... possible: 1. No reducer and a drive pulley radius of _ ~/0.00022 r~ V i~ -0.015m 128 Industrial Brushless Servomotors 4.5 shape is equally distributed. The trapezoidal...

Ngày tải lên: 12/08/2014, 16:20

... 4500 rpm as R 1.29 (3.72 3.22 Psp - 1. 48 ~-~T (T2s - T2soac) - 1. 48 0.422 - ) - 37 W ISO Industrial Brushless Servomoters 5.2 power loss when the brushless motor runs on load at the centre ... cannot be reduced. 1 48 Industrial Brushless Servomotors 5.2 the motor to remain below the maximum temperature, normally 150~ Soac curves The thermal characteristic of a br...

Ngày tải lên: 12/08/2014, 16:20

... usable temperature (EC) Maximum usable temperature (EF) 79 175 121 35 0 93 200 110 230 135 275 177 35 0 177 35 0 177 35 0 177 35 0 177 35 0 Water resistance Good to excellent Poor to fair Good to excellent Excellent ... to excellent Appearance Smooth and clear Smooth to fibrous Smooth and buttery Smooth and buttery Smooth and buttery Smooth and buttery Smooth and bu...

Ngày tải lên: 12/08/2014, 16:20

... temperature to 6 63 C 2. The beta phase, from 6 63 C to 764°C 3. The gamma phase, from 764°C to its melting point of 11 33 °C MS- 01 Page 12 Rev. 0 Structure of Metals DOE- HDBK -1 0 17 / 1- 93 COMMON LATTICE ... Module 2, Properties of Metals, and creep is covered in Module 5, Plant Materials. Rev. 0 Page 9 MS- 01 Structure of Metals DOE- HDBK -1 0 17 / 1- 93 BONDING...

Ngày tải lên: 13/08/2014, 05:20

... 16. 835 :1; input power 2 x 3, 950 kW. Bearing selection Input shafts (1) One cylindrical roller bearing FAG NU 233 6M.C3 and one four-point bearing FAG QJ 336 N2MPA.C3 form the locating bearing. The ... new 239 68MB 2 93 2.70 13, 600 2 .3 39 »200,000 Thrust bearings 8 2 936 4E only briefly loaded during sternway operation 9 29464E 650 3. 81 43, 300 2.5 > 87 »200,000 9 new...

Ngày tải lên: 13/08/2014, 05:21

... cycle) 3 6 Membranes for Industrial Wastewater Recovery and Re-use In the case of a dead-end filtration process, the resistance increases according to the thickness of the cake formed on ... steady-state flux for their trials on the less idealised system of granular calcium carbonate. Agreement was only obtained, however, 34 Membranes for Industrial Wastewater...

Ngày tải lên: 13/08/2014, 05:22

... foodindustry4,6,76.159.161,209 case qtudies 254-261.270-275 forest resources 102,248 formaldehyde 68,69-70 ,139 ,141 formate 138 ,139 formic acid 11 2 Porsell, T. and Son Ltd 250-254 fouling ... Control potable water 144 and textile industry 132 ,145-146 (IPPC) Directive 11 3 288 Membranes for Industrial Wastewater Recovery and Re-use recovery2 . 31. 33, 53,...

Ngày tải lên: 13/08/2014, 05:22

... + + pMOST - - - + terminal voltages as drain-source voltage Vds( = V, - VJ, gate-source voltage V,,( = V, - V,), and bulk-source voltage vb,( = vb - Vs). For normal DC ... has heavily doped p+ source and drain regions with 80 Z 4 LL 0 - W/L = to, = V. 3 MOS Transistor Structure and Operation -4 .0 -3 .2 -2 .4 -1...

Ngày tải lên: 13/08/2014, 05:22