The software adds the linearized model, linsys1, to the linear analysis workspace and generates a bode plot for the model. Bode diagram design is an interactive graphical method of modifying a compensator to achieve a specific openloop response loop shaping. The bode plotter is an electronic instrument resembling an oscilloscope, which produces a bode diagram, or a graph, of a circuits voltage gain or phase shift plotted against frequency in a feedback control system or a filter. The plot displays the magnitude in db and phase in degrees of the system response as a function of frequency. It is usually a combination of a bode magnitude plot, expressing the magnitude usually in decibels of the frequency response, and a bode phase plot, expressing the phase shift. Bode response of simulink model this example shows how to linearize a simulink model at the operating point specified in the model using the model linearizer. Setting the phase matching options so that at 1 rads the phase is near 750 degrees yields the second bode plot. For this example, to generate a bode plot for the resulting linear model, click bode. Plot the bode plot with matlab assume that you wanted to use matlab in order to obtain bode magnitude and phase plots for the following transfer function.
The frequency range and number of points are chosen automatically. The watertank system block represents the plant in this control system and includes all of the system nonlinearities to specify the portion of the model to linearize, first open the linearization tab. It is extremely useful for analyzing and testing filters and the stability of feedback control systems, through the. In electrical engineering and control theory, a bode plot. To do so, in the simulink window, in the apps gallery, click linearization manager to specify an analysis point for a signal, click the signal in the model.
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