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Unformatted text preview: and electrical circuit equations). If, however, we think of the coupling network as being temporarily disconnected from the electrical and mechanical circuits, we can choose two independent variables, say (A, x), which through the terminal relations stipulate i andfe. Our choice of A and x is motivated by (3.1.9), which shows how incremental changes in these variables are related to incremental changes in the magnetic stored energy Wi. The evaluation of the change in W, when A and/or x are varied by finite amounts requires an integration of (3.1.9). This is a line integration through variable space. For the example being considered (Fig. 3.1.1) there are two independent variables (A, x); thus variable space is twodimensional, as illustrated in Fig. 3.1.3. Independence of variables is indicated by orthogonality of axes. Suppose it is Fig. 3.1.3 Twodimensional variable space. APDF Split DEMO : Purchase from www.APDF.com to remove the watermark...
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This note was uploaded on 02/10/2012 for the course MECE 4371 taught by Professor Liu during the Fall '11 term at University of Houston.
 Fall '11
 Liu

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