design of single phase welding machine

Ngày tải lên: 18/12/2013, 09:10

... windings of a two- phase induction machine to be out of phase. To accomplish this the impedances of the stator windings are made unequal. For example, the split -phase machine is a two -phase induction ... generally between 3% and 5% of synchronous speed of the rotor. SINGLE- PHASE INDUCTION MACHINES 367 Figure 9.8-5. Free-acceleration characteristics of a capacitor-start single- phase induction motor. ... r abcr e r0 αβ ωω ωω cos( ) sin( ) (9.6-3) SINGLE- PHASE INDUCTION MACHINES 359 out of phase when the phases are connected to the same single- phase source. This provides a starting torque,...

Ngày tải lên: 16/02/2014, 18:48

... 0.00785 0.7452 0.01235 Real Pressure at 112971m of the end of pipeline is 6970 kPa Table 3.5. Summary of numerical results of oulet pressure p 2 Results of outlet pressure and its differences with ... Real Pressure at 112971m of the end of pipeline is 7730 kPa The results with input data - sample 2 in table 3.1 along the associated gas pipeline of flow equations of Weymouth, Panhandle A, ... Real Pressure at 112971m of the end of pipeline is 7040 kPa The results with input data - sample 3 in table 3.1 along the associated gas pipeline of flow equations of Weymouth, Panhandle A,...

Ngày tải lên: 22/07/2014, 10:21

... 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....

Ngày tải lên: 16/02/2014, 18:55

... 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 ... Reluctance Machine 413 7.4.1 Operating Principle of a Doubly Salient Reluctance Machine 414 7.4.2 Torque of an SR Machine 415 7.4.3 Operation of an SR Machine 416 7.4.4 Basic Terminology, Phase Number ... in electric machine design in a single book, yet this material may serve as a manual for a machine designer in the early stages of his or her career. The bibliographies at the end of chapters...

Ngày tải lên: 07/03/2014, 10:20

... 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 ... phrases nor dependent clauses occur. The inportance of nominal constituents is reflected in the statistics of the German texts: over 55% of the words in the corpus are nouns, 11% adjectives, ... 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...

Ngày tải lên: 17/03/2014, 19:21

... (2009) 99-105 102 π of sine wave. Because of delay of some components, we also observe delay of BPSK signal compare with a bit of sequence. Fig. 3. BPSK signal of Barker code bit duration ... device for detection, ranging and recognition of variety of targets. Because of great diversity of applications in military and civil, the designing of radar system is usually based on purpose. ... easily created. Technique of phase- coded modulation in this work is binary phase shift keying (BPSK) with the phase “0” of the IF sine wave represented for bit “1” and phase “π” represented for...

Ngày tải lên: 22/03/2014, 11:20

Ngày tải lên: 23/03/2014, 22:21

... 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...

Ngày tải lên: 08/04/2014, 11:35

... 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...

Ngày tải lên: 22/06/2014, 23:20

... 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...

Ngày tải lên: 27/06/2014, 14:20

... from a single 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 ... 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 ... 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...

Ngày tải lên: 08/08/2014, 12:23

... 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....

Ngày tải lên: 08/08/2014, 13:20

Ngày tải lên: 08/08/2014, 13:20

Ngày tải lên: 08/08/2014, 13:20

Ngày tải lên: 08/08/2014, 13:20

Ngày tải lên: 08/08/2014, 13:20

Ngày tải lên: 08/08/2014, 13:20

Ngày tải lên: 08/08/2014, 13:20