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A#20 - the pointer(output will oscillate with a frequency...

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Assignment #20 ECSE-2410 Signals & Systems - Fall 2006 Tue 11/21/06 1(20). This problem illustrates a practical scheme for finding transfer functions, if we know something about the order of the system. This meter is basically a DC motor! A spring-restrained meter of inertia, J , is suspended on frictionless bearings. The meter movement has resistance, R , and negligible inductance. The permanent magnet field may be regarded as radial in direction where it is cut by the windings of the movement. Test data are given below. pointer deflection θ spring meter movement N S R input (a) If the movement is displaced mechanically with the input terminals open and then released,
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Unformatted text preview: the pointer (output) will oscillate with a frequency of 5 rad./sec. (b) A sinusoidal voltage of 0.1 volt amplitude and 5 rad./sec. frequency is applied to the input terminals, the pointer produces a steadly-state oscillation of 0.2 rad. amplitude. (c) When 0.2 volt dc is applied to the input terminals, the steady-state deflection of the pointer is 0.4 rad. Find the transfer function of the meter. 2(40). Text 11.57. This problem deals with PID controllers that are used in the “RPI Segway”. 3(40). Text 11.54. This problem uses feedback (actually positive feedback) to realize an oscillator....
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