design of synchronous machines
DESIGN OF ROTATING ELECTRICAL MACHINES pdf
... Synchronous Machines 3957.2.11 Synchronous Reluctance Machines 4007.3 DC Machines 4047.3.1 Configuration of DC Machines 4047.3.2 Operation and Voltage of a DC Machine 4057.3.3 Armature Reaction of ... Shift of Damper Bar Slotting from the Symmetry Axis of the Pole 3927.2.8 V Curve of a Synchronous Machine 3947.2.9 Excitation Methods of a Synchronous Machine 3947.2.10 Permanent Magnet Synchronous ... co-authorship of Professor Tapani Jokinen, whohas spent decades in developing the Finnish machine design profession. An important view of electrical machine design is provided by Professor Val´eria...
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Design of machinery mechanisms and machines 2nd ed
... engineering educationand 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. ... Principles of Mechanism in 1841 while aprofessor of natural philosophy at the University of Cambridge, England. He attemptedto systematize the task of mechanism synthesis. He counted five ways of obtaining ... the quality of the design. Commercially available programssuch as Working Model* also allow rapid analysis of a proposed mechanical design. Theprocess then becomes one of qualitative design by...
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Báo cáo hóa học: " The Optimal Design of Weighted Order Statistics Filters by Using Support Vector Machines" doc
... hyperplane.4. SUPPORT VECTOR MACHINES FORDICHOTOMOUS WOS FILTERS4.1. Linear support vector machines fordichotomous WOS filtersIn the above section, the new approach of designing WOSfilter has reduced ... applications. In thispaper, SVMs are introduced into the design of WOS filters inordertoimproveperformance.WOS filters are special subset of stack filters. Each stackfilter is based on a positive ... marginally im-proved by using the conventional design approach of stackfilter or neural network. Although the adaptive neural fil-ter can effectively remove noise of various kinds, includingGaussian noise...
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genetic algorithm based optimal pwm in high power synchronous machines and regulation of observed modulation error
... identification of the current harmonic model of synchronous machine and observation of modulation error. In this approach, considering the equations of synchronous machine, a model consisting of input ... capabilities of designing the torque characteristics to meet the requirements of the driven load, have made them the optimal choices for a multitude of industries. Economical utilization of these machines ... diagram of the system under test. In this system, a field excited synchronous motor in the range of 80kW, with the steady state excitation current of 25A is used.The main system setup consists of: ...
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DESIGN OF MACHINERYAN INTRODUCTION TO THE SYNTHESIS AND ANALYSIS OF MECHANISMS AND MACHINES phần 2 potx
... the quality of the design. Commercially available programssuch as Working Model* also allow rapid analysis of a proposed mechanical design. Theprocess then becomes one of qualitative design by ... motor. There are a myriad of other examples of fourbar couplercurves 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 isalong 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
... orientation of the link which containsthe point of interest. The coupler curve is made to pass through a set of desired outputpoints. 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 isdefined 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 thelocations of the fixed pivots Oz and04in 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
... moving centrode atone extreme of its path motion (i.e., at one of the positions ofh,3), then it will have a cuspin its coupler curve. Figure 6-17b shows a coupler curve of such a point, drawn withprogram ... linkage.All of the coupler curves of points on link3will have the same path shapes as in the orig-inallinkage. We now have, in effect, a "linkless" fourbar linkage, really one composed of ... example shown in Figure 6-14 is a non-Grashoffourbar. The lengths of its centrodes are limited by the double-rocker toggle positions.All instant centers of a linkage will have centrodes. If the...
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DESIGN OF MACHINERYAN INTRODUCTION TO THE SYNTHESIS AND ANALYSIS OF MECHANISMS AND MACHINES phần 5 pps
... choice of displacement function. In fact, the cam designershould not be as concerned with the displacement function as with its higher derivatives.TheFundamental law of Cam Design Any cam designed ... furtherevidence of the folly of our earlier naive approach to earn design which dealt exclusive-ly with the displacement function. The earn designer must be concerned with the higherderivatives of displacement. ... delta functions, appearing in the derivative of acceleration, jerk. Thusthe corollary merely restates the fundamental law of cam design. Our naive designerfailed to recognize that by starting...
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DESIGN OF MACHINERYAN INTRODUCTION TO THE SYNTHESIS AND ANALYSIS OF MECHANISMS AND MACHINES phần 6 potx
... When designing machinery, we must first do a complete kinematic analysis of our design, as described in Part I of this text, in order to obtain information about the accel-erations of the ... differential element of mass is also shown. The mass moment(first moment of mass) of the differential element is equal to the product of its massand its distance from the axis of interest. With ... the masses of all the moving parts whichhave these known accelerations. These parts do not exist yet! As with any design prob-lem, we lack sufficient information at this stage of the design to...
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DESIGN OF MACHINERYAN INTRODUCTION TO THE SYNTHESIS AND ANALYSIS OF MECHANISMS AND MACHINES phần 7 potx
... velocity of 50 rad/sec. The torque varies a great deal within one cy-cle of the mechanism, going from a positive peak of 341.7 Ib-in to a negative peak of -166.41b-in. The average value of this ... of designs in a short time. There are infinities of viablesolutions to these problems. Iterate to find the best one! All links must be designed indetail as to their geometry (mass, moment of ... magnitude and angle of the counterweight's mR vector. Note that the angle of the mR vector for each link willbe referenced to that link's line of centers. Design the shape of the physical...
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SAP2000® Linear and Nonlinear Static and Dynamic Analysis and Design of Three-Dimensional Structures
... 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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SAP2000 Integrated Finite Elements Analysis and Design of Structures
... Select Mode.24. Click the roof beam at the top of the braced frame to select it. Also click the joint at the top of the chevron brace (center of braced frame roof beam) to select it.25. From ... C-10 to enter the last roof beam.The model now appears as shown in Figure C-11.Figure C-11: Model After All Roof Level Beams Have Been Drawn18. Select all of the roof level frame elements and ... Span Loads Used In SAP2000 ModelRoof Beams 39, 40, 51, 520.40 klf DL0.12 klf LLRoof Beams 41/44, 42, 47/50, 49Roof Beams 45, 460.48 klf DL0.24 klf LLRoof Beams 43, 48Second Floor Beams...
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The design of mat foundations
... being designed for a small office building with a total live load of 250 kips and dead load of 500 kips. Find: (a) the depth Dffor a fully compensated foundation, (b) the depth Dfif a soft ... of the clay layer, z/B = 18 ft / 40 ft = 0.45 and L/B = 60 ft / 40 ft = 1.502) At the middle of the clay layer, z / B = 22 ft / 40 ft = 0.55 and L/B = 60 ft / 40 ft = 1.503) At the bottom of ... 0.25eo = 0.9density (sat) = 119 pcf Example 4. Design the steel lying in the East-West direction of the mat shown below with external dimensions of 42 feet by 74 feet. The columns are all 15”by...
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