slot design of dc machine
Tài liệu Steady State Operation of DC Machines pptx
Ngày tải lên :
17/12/2013, 14:15
... already mentioned, DC machines used to be in the past the major source of DC
power. In order to produce electric power DC machines were operated as generators.
Nowadays, however, use of DC generators ... Engineering
E Levi, 2001
1
STEADY STATE OPERATION OF DC MACHINES
1. INTRODUCTION
Electric DC machines, as indeed any other type of electric machine, can be used to
either produce electric energy ... more rare. DC power is
obtained instead by means of power electronic converters. The remaining applications of DC
machines are today restricted to motoring. In this operating regime a DC machine...
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Chapter 15 introduction to the design of electric machinery
Ngày tải lên :
16/02/2014, 18:55
... INTRODUCTION
The majority of this text concerns the analysis of electric machinery and drive systems.
The focus of this chapter is the use of these concepts for design. In particular, the design
of a permanent-magnet ... & Sons, Inc.
INTRODUCTION TO THE
DESIGN OF ELECTRIC
MACHINERY
15
616 INTRODUCTION TO THE DESIGN OF ELECTRIC MACHINERY
however, no design is better than any of the others in both mass and loss. ... (15.3-3)
FORMULATION OF DESIGN PROBLEM 609
15.9. FORMULATION OF DESIGN PROBLEM
At this point, we are ready to consider the design of the machine. There are many ways
to formulate the design problem....
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Báo cáo khoa học: "DESIGN OF A MACHINE TRANSLATION SYSTEM " pptx
Ngày tải lên :
17/03/2014, 19:21
... style of the sublanguage is distin-
guished by cc~plex nominal dependencies with va-
rious levels of coordination. In addition, most
sentences are inoc~lete in that they consist of a
series of ... This software
tool not only allows for the separation of data
and algorithms but also provides great flexibility
in the organization of grammars and subgrammars,
and in the control of the ... 1% of the corpus. A ccr~parison
with the statistics of the French and Italian
translations reveal approximately the sane distri-
bution except for infinitival venbs. The higher
frequency of...
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DESIGN OF ROTATING ELECTRICAL MACHINES pdf
Ngày tải lên :
07/03/2014, 10:20
... Reluctance Machines 400
7.3 DC Machines 404
7.3.1 Configuration of DC Machines 404
7.3.2 Operation and Voltage of a DC Machine 405
7.3.3 Armature Reaction of a DC Machine and Machine Design 409
7.3.4 ... Symbols
D
r
outer diameter of the rotor [m]
D
ri
inner diameter of the rotor [m]
D
s
inner diameter of the stator [m]
D
se
outer diameter of the stator [m]
D1–D2 series magnetizing winding of a DC machine
d thickness ... the flux, and
part of the flux passes into the air. This is the case for instance when the teeth of electrical
machines saturate: a part of the flux flows across the slots of the machine, even though...
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Design of machinery mechanisms and machines 2nd ed
Ngày tải lên :
08/04/2014, 11:35
... engineering education
and of the text Machine Design: An Integrated Approach. He is a Fellow of the Ameri-
can Society of Mechanical Engineers and a member of the Society of Automotive Engi-
neers. ... engineering
with emphasis on design, kinematics, and dynamics of machinery. He is the author of
numerous technical papers and journal articles covering kinematics, dynamics of machin-
ery, carn design and manufacturing, ... production machinery. He holds 13 U.S. patents.
Norton has been on the faculty of Worcester Polytechnic Institute since 1981 and is
currently professor of mechanical engineering and head of the design...
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the handbook of human-machine interaction a human-centered design approach
Ngày tải lên :
31/05/2014, 01:47
... the Laboratory of Design for Cognition.
Professor Lahlou's current research interests are in the application of social sciences
to the real world, and especially the design of human-friendly ... School of Industrial
Design of the University of Montreal. She is doing her thesis on the autotelic experience,
which is a dimension of the user experience. She is currently co-teaching a design ... eects of sleep loss 37
0
17.3 Relative risk of a fatigue-related fatal truck crash as a function of
time of day 37
1
17.4 Relative risk of a fatigue-related fatal truck crash as a function of
hours...
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Báo cáo hóa học: " The Optimal Design of Weighted Order Statistics Filters by Using Support Vector Machines" doc
Ngày tải lên :
22/06/2014, 23:20
... hyperplane.
4. SUPPORT VECTOR MACHINES FOR
DICHOTOMOUS WOS FILTERS
4.1. Linear support vector machines for
dichotomous WOS filters
In the above section, the new approach of designing WOS
filter has reduced ... applications. In this
paper, SVMs are introduced into the design of WOS filters in
ordertoimproveperformance.
WOS filters are special subset of stack filters. Each stack
filter is based on a positive ... marginally im-
proved by using the conventional design approach of stack
filter or neural network. Although the adaptive neural fil-
ter can effectively remove noise of various kinds, including
Gaussian noise...
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Design of Machinery pdf
Ngày tải lên :
27/06/2014, 14:20
... continuity of the cam design at the segment
interfaces. The values of each function at the beginning and end of each segment are
grouped together for easy viewing. The fundamental law of cam design ... display of out-
put data in the form of tables and plots. All the programs are designed to be user friendly
and reasonably "crashproof." The author encourages users to email reports of any ... one sets out to design a piece of new equipment.
First, he visualizes a series of complete machines with gaps where the problem or un-
known areas are. During this time, a number of directions...
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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
... the quality of the design. Commercially available programs
such as Working Model* also allow rapid analysis of a proposed mechanical design. The
process then becomes one of qualitative design by ... motor. There are a myriad of other examples of fourbar coupler
curves used in machines and mechanisms of all kinds.
One other example of a very different application is that of the automobile suspen-
sion ... of the linkage assembly, and its motion is
along a set of coupler curves. The orientation of the wheel is also of concern in this case,
so this is not strictly a path generation problem. By designing...
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DESIGN OF MACHINERYAN INTRODUCTION TO THE SYNTHESIS AND ANALYSIS OF MECHANISMS AND MACHINES phần 3 pot
Ngày tải lên :
08/08/2014, 13:20
... orientation of the link which contains
the point of interest. The coupler curve is made to pass through a set of desired output
points. However, it is common for the timing of the arrival of the coupler ... rotation of the input rocker, link 2, through an as yet unspecified angle
~z.
Note also that the angle of the coupler link 3 at each of the precision positions is
defined by the angles of the position ... the coordinates
of vectors W,
Z,
D, and S, which define not only the lengths of those links but also the
locations of the fixed pivots Oz and
04
in the plane and the lengths oflinks 3 and 1....
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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
... moving centrode at
one extreme of its path motion (i.e., at one of the positions ofh,3), then it will have a cusp
in its coupler curve. Figure 6-17b shows a coupler curve of such a point, drawn with
program ... out of metal, as shown in Figure
6-14d, and roll the moving centrode (which is link 3) against the fixed centrode (which
is link 1), the complex motion of link 3 will be identical to that of the ... linkage.
All of the coupler curves of points on link
3
will have the same path shapes as in the orig-
inallinkage. We now have, in effect, a "linkless" fourbar linkage, really one composed
of...
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SAP2000® Linear and Nonlinear Static and Dynamic Analysis and Design of Three-Dimensional Structures
Ngày tải lên :
06/09/2012, 15:56
...
1 - 2 Overview of the Program
1
Overview of the Program
SAP2000 is a stand-alone finite-element-based structural program for the
analysis and design of civil structures. It offers an intuitive, ... Property Type for Add area of the form. Scroll down the list
of import options until you find Import Double Angle – see Figure 7.
Single click on it.
D. In the Click to area of the Frame Properties ... to read this manual on
your computer screen.
During the course of this tutorial, we will explore many of the basic fea-
tures of SAP2000. Prepare to spend at least one hour going through this...
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