App: Graphic Asymptotes Bode Diagram for Linux and for Windows (Executable file)
The application was programmed in Python and uses a simple graphical interface in Qt5 Design. The application aims to assist students in sketching the Bode diagram of minimum-phase and non minimum-phase systems and summing the magnitude and the phase asymptotes. There is an expectation that this app can and will be improved with feedback and suggestions from teachers and students.
App: Design of frequency domain compensators
Application that presents an interactive user interface for the design of compensators using the frequency response method. The compensators considered are by phase advance, by phase delay, by delay-phase advance, proportional-integral (PI), proportional-differential (PD), proportional-integral-differential. For the design of the compensators, two design procedures were implemented, which were called trial-and-eroo and analytical. The application was developed entirely in MATLAB.
App: Nyquist Diagram
The program plays a fundamental role in the elaboration of the Nyquist diagram of the frequency response for minimum-phase and non-minimum-phase systems without transport delay, considering two types of Nyquist contours (named Nyquist contour and modified Nyquist contour) and the functionalities are: (i) An interface for entering transfer function data, in this interface it is possible to choose whether the diagram will be the polar diagram, the Nyquist diagram with Nyquist contour or modified Nyquist contour (which excludes the origin) or a second modified Nyquist contour (includes the origin). (ii) A window dedicated to mapping the Nyquist contour onto the Nyquist diagram. In this window each point of the Nyquist contour is mapped onto the corresponding point of the Nyquist diagram. The mapping is shown with a line that joins point to point the corresponding Nyquist contour and the resulting Nyquist diagram. In this mapping window, it is possible to zoom in on the Nyquist contours and/or the resulting Nyquist diagram in order to observe the details of the contours and the resulting Nyquist diagram. (iii) The transfer functions considered are minimum-phase and non-minimum-phase without transport delay. The program aims to help engineering students learn about frequency response using the Nyquist diagram method and stability analysis using the Nyquist stability criterion.
Link to access the application