Electromechanical Dynamics (Part 1).0059

Electromechanical Dynamics (Part 1).0059 -...

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Lumped Electromechanical Elements ft) 4. + X2 21 -- i•//////////////// / - - (b) Fig. 2.2.2 A force source: (a) physical; (b) schematic. systems. These extensions of our definitions should be clear from Figs. 2.2.3 and 2.2.4, in which 0, and 02 measure the angular displacements of the two disks, with respect to fixed references, and the torque T is applied between them. In the examples we shall consider we shall encounter either pure translation or rotation about a fixed axis. Consequently, the geometry of motion as described so far is adequate for our purposes. We now describe ideal, passive,
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Unformatted text preview: lumped-parameter, mechanical elements. 2.2.1a The Spring* An ideal spring is a device with negligible mass and mechanical losses whose deformation is a single-valued function of the applied force. A linear 1\ 0 = 02 -01= O(t) 0(t) + + 02 01 (b) Fig. 2.2.3 An angular position source: (a) physical; (b) schematic. * For a comprehensive treatise on the subject see A. M. Wahl, Mechanical Springs, 2nd ed., McGraw-Hill, New York, 1963. A-PDF Split DEMO : Purchase from www.A-PDF.com to remove the watermark...
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