Plotting and Analysis with Matlab K. A. Connor Mobile Studio Project Center for Mobile Hands-On STEM SMART LIGHTING Engineering Research Center ECSE Department Rensselaer Polytechnic Institute Intro to ECSE Analysis

Matlab Analysis Importing Data Some Concepts Load Lines Decibels Fourier and Laplace Transforms Bode Plots

Importing Data Matlab Home Tab – Import Data Select the file to import Click on the green check mark to import ‘whos’ to check the variable names & sizes

Match I-V Plots for Solution Load Lines A load line is used in graphical analysis of nonlinear electronic circuits, representing the constraint other parts of the circuit place on a non-linear device, like a diode or transistor. It is usually drawn on a graph of the current vs the voltage in the nonlinear device, called the device's characteristic curve. Match I-V Plots for Solution Wikipedia

Decibels To express ratios of amplitudes or amplitudes relative to a standard when values vary over many orders of magnitude

Decibels

Decibels

Transforms Phasors Fourier Transforms Laplace Transforms

Bode Plots (Diagrams) Plot of frequency response of a system Magnitude Phase Wikipedia

Matlab Bode Write Laplace Transform transfer function Then bode(transfer function) RLCF=tf([0 0 1],[1e-9 5e-6 1]);% RLC Circuit Current bode(RLCF);grid;

Bode Note!

LTspice

Summary The Powerful Combination: Experiment Simulation Math Modeling Also – Understanding what is necessary rather than everything … usually can be done.