VU- LRT simulink model

Hello guys,

I want to model the time in simulink model. The time as an output is required. i need to analyse the data being recieved from NXT is getting lost or not. The model which i have installed on NXT is done by using VU_LRT toolbox. The model is transmitting the data which is being displayed on Matlab-sceen when i call function file xyz.m but the system time in ticks/sec/ms is not getting saved anywhere. Though it might be simple but i am unable to do that. Please help me to model the time block and save the time along with the other output datas. You can refer VU-LRT samples to get an idea. Thank you.

-Shivanand

Answer 1

[Gautam]

Hello, Shivanand

You can try the following steps:

• Add Clock block to model time.
• Combine time with your data using Mux.
• Save combined signal using To Workspace or File Write block.
• Analyze in MATLAB for missing data.

load('simout.mat'); % or your variable
time = simout(:,1);
data = simout(:,2:end);

dt = diff(time);
figure;
plot(dt);
title('Time difference between samples');
xlabel('Sample #');
ylabel('Time step (ms)');

% Look for spikes in dt indicating lost samples