introduction to electric machines
Dorf, Svoboda - Introduction to Electric Circuits, 9th Ed _ www.bit.ly/taiho123
Ngày tải lên :
16/12/2016, 19:09
... Bruce Hobart/Laserwords Maine Cover Photos: # Jivko Kazakov/iStockphoto.com; Alberto Pomares/Getty Images; # choicegraphx/iStockphoto.com; # mattjeacock/iStockphoto.com This book was set in 10/12 ... MARKETING ASSISTANT DESIGN DIRECTOR PRODUCT DESIGNER EDITORIAL OPERATIONS MANAGER EDITORIAL OPERATIONS ASSISTANT SENIOR DESIGNER PHOTO EDITOR SENIOR CONTENT EDITOR EDITORIAL PROGRAM ASSISTANT CONTENT ... Storage Elements 268 7.1 Introduction 268 7.2 Capacitors 269 7.3 Energy Storage in a Capacitor 275 7.4 Series and Parallel Capacitors...
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Chapter 15 introduction to the design of electric machinery
Ngày tải lên :
16/02/2014, 18:55
... similar to the stator backiron The inert region (radii from rrs to rri) mechanically transfers torque from the rotor backiron to the shaft It is often just a continuation of the rotor Stator Backiron ... radius, rrb—the rotor backiron radius, rrg—the rotor air-gap radius, rst—the stator tooth inner radius, rsb—the stator backiron inner radius, and rss—the stator shell radius A stator shell, if present, ... of canceled conductors to be zero and require the end winding conductor arrangement to be symmetric in the sense that for any end conductor count over tooth i, the end conductor count over the...
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DESIGN OF MACHINERYAN INTRODUCTION TO THE SYNTHESIS AND ANALYSIS OF MECHANISMS AND MACHINES phần 2 potx
Ngày tải lên :
08/08/2014, 12:23
... moved slightly beyond the toggle position and against a fixed stop Any attempt to reverse the motion of the linkage then causes it merely to jam harder against the stop It must be manually pulled ... and perpendicular to link 4, respectively Ideally, we would like all of the force F 34 to go into producing output torque T on link However, only the tangential component creates torque on link ... etc., are all that are needed to generate these linkages Compass, protractor, and rule are the only tools needed for graphical linkage synthesis Refer to any introductory (high school) text on geometry...
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DESIGN OF MACHINERYAN INTRODUCTION TO THE SYNTHESIS AND ANALYSIS OF MECHANISMS AND MACHINES phần 3 pot
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08/08/2014, 13:20
... chosen Newton's algorithm evaluates the function for this guess value, finding YI The value of YI is compared to a user-selected tolerance (say 0.001) to see if it is close enough to zero to call ... vector and: a b c 4-2 Draw Write Write polar the position vector to scale on cartesian axes an expression for the position vector using unit vector notation an expression for the position vector ... equation 5.31 in the matrix to get the coordinates of vectors U and S Equations 5.2 are then solved to find links and 3, and the appropriate vector components are added together to get the locations...
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DESIGN OF MACHINERYAN INTRODUCTION TO THE SYNTHESIS AND ANALYSIS OF MECHANISMS AND MACHINES phần 4 pptx
Ngày tải lên :
08/08/2014, 13:20
... of slip is shown to be tangent to the slider motion and is the line along which all sliding occurs between links and The axis of transmission is defined to be perpendicular to the axis of slip ... joint, except for friction We will assume friction to be negligible in this example Any force or velocity vector applied to point A can be resolved into two components along these two axes which provide ... made in regard to graphical velocity analysis in Section 6.2 (p 244) apply as well to graphical acceleration analysis Historically, graphical methods were the only practical way to solve these...
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DESIGN OF MACHINERYAN INTRODUCTION TO THE SYNTHESIS AND ANALYSIS OF MECHANISMS AND MACHINES phần 5 pps
Ngày tải lên :
08/08/2014, 13:20
... matched exactly to the conveyor, in order to carry the tools alongside for a long enough time to their job These cam driven "chaser" mechanisms must then return the tool quickly to its start position ... assembly machines never allow the workpiece to stop and thus are capable of higher throughput speeds All operations are performed on a moving target Any tools which operate on the product have to "chase" ... applicable to the fall with slight modification To convert rise equations to fall equations, it is only necessary to subtract the rise displacement function s from the maximum lift h and to negate...
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DESIGN OF MACHINERYAN INTRODUCTION TO THE SYNTHESIS AND ANALYSIS OF MECHANISMS AND MACHINES phần 6 potx
Ngày tải lên :
08/08/2014, 13:20
... this text, in order to obtain information about the accelerations of the moving parts We next want to use Newton's second law to calculate the dynamic forces But to so we need to know the masses ... left and right in response to the driver's hand on the shift lever These clutches act to lock one gear to the output shaft at a time to provide a power path from input to output of a particular ... to tap its angular velocity and torque either as an input or an output 9.11 TRANSMISSIONS are commonly used in manual (nonautomatic) automotive transmissions to provide user-selectable ratios...
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DESIGN OF MACHINERYAN INTRODUCTION TO THE SYNTHESIS AND ANALYSIS OF MECHANISMS AND MACHINES phần 7 potx
Ngày tải lên :
08/08/2014, 13:20
... than the peak torque We would like to provide some means to smooth out these oscillations in torque during the cycle This will allow us to size the motor to deliver the average torque rather ... near constant speed The peak torques needed may be so high as to require an overly large motor to deliver them However, the average torque over the cycle, due mainly to losses and external work ... of torque as representing energy delivered by the driver (motor) and stored temporarily in the moving links, and the negative pulses of torque as energy attempting to return from the links to...
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DESIGN OF MACHINERYAN INTRODUCTION TO THE SYNTHESIS AND ANALYSIS OF MECHANISMS AND MACHINES phần 8 ppsx
Ngày tải lên :
08/08/2014, 13:20
... than the peak torque We would like to provide some means to smooth out these oscillations in torque during the cycle This will allow us to size the motor to deliver the average torque rather ... near constant speed The peak torques needed may be so high as to require an overly large motor to deliver them However, the average torque over the cycle, due mainly to losses and external work ... of torque as representing energy delivered by the driver (motor) and stored temporarily in the moving links, and the negative pulses of torque as energy attempting to return from the links to...
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DESIGN OF MACHINERYAN INTRODUCTION TO THE SYNTHESIS AND ANALYSIS OF MECHANISMS AND MACHINES phần 9 docx
Ngày tải lên :
08/08/2014, 13:20
... counterweight at this large a radius would not work The balance mass has to be kept close to the centerline to clear the piston at BDC Figure 13-2c shows the shape of typical crankshaft counterweights ... student to exercise many variations of an engine design in a short time Some examples are provided as disk files to be read into the program These are noted in the text The student is encouraged to ... ENGINE in order to develop an understanding of and insight to the subtleties of this topic A user manual for program ENGINE is provided in Appendix A which can be read or referred to out of sequence,...
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DESIGN OF MACHINERYAN INTRODUCTION TO THE SYNTHESIS AND ANALYSIS OF MECHANISMS AND MACHINES phần 10 docx
Ngày tải lên :
08/08/2014, 13:20
... friction creates friction torque through the geometry described in the gas torque equation 13.8 (p 613) The other torque values (gas torque, inertia torque, and total torque) are not reduced in ... button The Done button on either the Input or Animate screen returns you to the Home screen The Plot and Print buttons will now be available as well as the Animate button which will send you to ... button The Done button on either the Input or Animate screen returns you to the Home screen The Plot and Print buttons will now be available as well as the Animate button which returns you to...
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Two dimensional colloidal assembly under an alternating electric field from introduction to structure
Ngày tải lên :
13/09/2015, 21:28
... specific range for the detector to successfully measure it If too much light is detected then the detector will become overloaded To overcome this an “attenuator” is used to reduce the intensity ... applied to the electrodes [87] There is no net flow, unless the field has a component tangential to the surface The ions in the double layer then react to tangential electric fields leading to bulk ... helps particles to assemble together This consideration can account for the fact that colloidal particles stopped to form 2D assembly above a certain frequency However, it fails to predict the...
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An introduction to disk drive modeling
Ngày tải lên :
12/09/2012, 14:16
... cylinder skewing and sector-based sparing with one spare sector per track This needs to be accounted for in mapping logical blocks to the physical sectors Adding all these factors results in the ... 97560 sector size 256 bytes 512 bytes cylinders 1449 1962 tracks per cylinder 19 data sectors per track 113 72 number of zones 1 track skew 34 sectors sectors cylinder skew 43 sectors 18 sectors ... specifications, since the only alternative is to determine them experimentally The information required to determine how much power to apply to the pivot motor and for how long on a particular seek...
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C++ - I/O Streams as an Introduction to Objects and Classes
Ngày tải lên :
12/09/2012, 22:49
... beginning to the end (for now) No backing up to read something again (OK to start over) Just as done from the keyboard Writing to a file Sending output to a file Done from beginning to end ... fails, it is generally best to stop the program The function exit, halts a program exit returns its argument to the operating system exit causes program execution to stop exit is NOT a member ... flag is an instruction to one of two options ios::fixed is a flag Will be written in fixed-point notation, the way we normally expect to see numbers Calls to setf apply only to the stream named...
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Introduction to Digital Signal Processing and Filter Design
Ngày tải lên :
13/09/2012, 10:21
... using complementary metal oxide semiconductor (CMOS) transistors They used no resistors and inductors, and the whole circuit was fabricated by the 20 INTRODUCTION very large scale integration ... may have to tune each of them to correct for manufacturing tolerances, but there is no such need to test the accuracy of the wordlength in digital filters Data on digital filters can be stored on ... the ability to understand the solution to the problems is important but understanding the theory behind them is far more important The following paragraphs are addressed to the instructors teaching...
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Introduction to Wireless Communications
Ngày tải lên :
13/09/2012, 10:52
... software that helps identify other Bluetooth devices Bluetooth and Ultra Wide Band (continued) Bluetooth and Ultra Wide Band (continued) • Bluetooth – Distance: up to 33 feet (10 meters) – Bandwidth: ... (continued) Bluetooth and Ultra Wide Band • Radio frequency identification device (RFID) tags – Small chips containing radio transponders • Can be used to track inventory • Bluetooth and Ultra ... Used to transmit data over very long distance • Repeater – Located in the satellite itself – Simply “repeats” the same signal to another location – Used to transmit data from one earth station to...
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An Introduction to Software Engineering
Ngày tải lên :
14/09/2012, 11:26
... developed for a particular customer or may be developed for a general market Software products may be • • Generic - developed to be sold to a range of different customers e.g PC software such ... systems that are intended to provide automated support for software process activities CASE systems are often used for method support Upper-CASE Lower-CASE • • Tools to support the early process ... engineers should adopt a systematic and organised approach to their work and use appropriate tools and techniques depending on the problem to be solved, the development constraints and the resources...
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