ishitaisha6840 asked . 2020-09-22

how to model a time varying finction from text file.....

I had a data from a gyroscope sensor in the form of a text file. The data represents the XYZ relative displacements. I need to create a road excitation function so that i can simulate my suspension system in simulink. Please any one tell me how i can create a function which relate the data with time.

simulink , matlab , simulation

Expert Answer

John Michell answered . 2024-12-20 18:50:57

Okay, you must know the sample time of your data in the text file. Let's assume your sample time is 0.1 second. Your data in the text file contains a 100x3 matrix, representing the x, y and z displacement from 0 to 10 seconds.

First, import your text data into workspace use importdata(), uiimport() or textscan. Once you have the data, for example, x=rand(100,1), you need to create a time vector t=(0:0.1:9.9)', the reason for 9.9 is because it starts at 0 so the vector t also has exactly 100 samples of data.

Then drag a "From Workspace" block, double click, put in [t,x] for 'data' in the dialog window. You've got the time varying signal for x.

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