Electromechanical Dynamics (Part 1).0083

Electromechanical Dynamics (Part 1).0083 - because the...

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Lumped-Parameter Electromechanics that is, the forcefe exerted by the system in the box on the mechanical node is a function of the state (i, x). This is reasonable if the box includes only those elements that store energy in the magnetic field. Hence all purely electrical elements (inductors that do not involve x, capacitors, and resistors) and purely mechanical elements (all masses, springs, and dampers) are connected to the terminals externally. Note that fe is defined as the force of electrical origin applied to the mechanical node in a direction that tends to increase the relative displacement x. Because (3.1.1) can be solved for i to yield i = i(0, x), (3.1.3) the forcef 6 can also be written as fe =f'(2, x). (3.1.4) It is well to remember that the functions of (3.1.2) and (3.1.4) are different
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Unformatted text preview: because the variables are different; however, for a particular set of i, A, x the forcefe will have the same numerical value regardless ofthe equation used. In a similar way the mechanical force of electric origin for an electric field system (see Fig. 3.1.2) can be written as fe fe(q, x) (3.1.5) or f" =fe(v, X). (3.1.6) q --------------1 K I (b) Fig. 3.1.2 (a) An electric field electromechanical system; (b) its representation in terms of terminal pairs. Note that the coupling network does not include mechanical energy storage elements (M) or electrically dissipative elements (G). 1 (a) A-PDF Split DEMO : Purchase from www.A-PDF.com to remove the watermark...
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