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Electromechanical Dynamics (Part 1).0084

Electromechanical Dynamics (Part 1).0084 - A-PDF Split DEMO...

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Electromechanical Coupling When the mechanical motion is rotational, the same ideas apply. We replace force f by torque T' and displacement x by angular displacement 0. Although the systems of Figs. 3.1.1 and 3.1.2 have only one electrical and one mechanical terminal pair, the discussion can be generalized to any arbitrary number of terminal pairs. For instance, if an electric field system has N electrical terminal pairs and M mechanical terminal pairs for which the terminal relations are specified by (2.1.36), then (3.1.6) is generalized to fie =fie(V1, i21(v *, VN; X1, X 2 .... XM), (3.1.7) i= 1 , 2 , .. ,M, where the subscript i denotes the mechanical terminal pair at which f8 is applied to the external system by the coupling field. The other forms off can be generalized in the same way. The next question to be considered is how to determine the forcef" for a particular system. One method is to solve the field problem, find force densities, and then perform a volume integration to find the total force. This
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