It can also be shown that if the closed loop function is type ii, i. Documentation is a bit sparse so this example might be helpful. Many common system behaviors produce simple shapes e. 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. Graficamos magnitud en db y fase en en las siguientes escalas semilogaritmicas.
I didnt have access to matlab, instead i searched for a solution using python, and i found one. Statespace equations transfer function zeropolegain representation. I also have a low cost clio 7 system which does excellent bode plotting frequency response both in electrical and acoustics domain. This we page computes and plots the magnitude and phase of the frequency response of an lti control system. It is a standard format, so using that format facilitates communication between engineers. Bode plots page 1 bode plots a bode plot is a standard format for plotting frequency response of lti systems. Both quantities are plotted against a horizontal axis proportional to the logarithm of frequency. This is referred to as the frequency domain behavior of a. Decibel corresponde a 20 vezes o logaritmo da quantidade. You can decide to make it visible only to you or to a restricted audience. It is the combination of a bode magnitude plot, expressing the magnitude of the frequency response decibels, and a bode phase plot, expressing the phase shift degrees. It is extremely useful for analyzing and testing filters and the stability of feedback control systems, through the measurement. Creating bode plots from a transfer function given the transfer function. The plot displays the magnitude in db and phase in degrees of the system response as a function of frequency.