Custom Component input: physical signal

Hi, I'm going from a Ideal Translational Motion Sensor into a Custom Component. So I deliver for example the velocity of a piston into my block. In the Custom Component I want to build a graph where the resistance is on the y-axis and the velocity is on the x-axis. My problem is, that I don't know how the velocity is delivered. How can I access the values and how can I create the nonlinear graph? I would be thankful for any help!

Answer 1

[Sebastian Castro]

I'd suggest enabling Simscape data logging and then using the simscape.logging.plotxy function to plot the signals of interest in a MATLAB figure.

http://www.mathworks.com/help/physmod/simscape/ref/simscape.logging.plotxy.html

- Sebastian

[smaru]

Perfect! Thank you! Do you know how I can change the color line of the plotxy from the default blue into black? A simply 'k' at the end of the plotxy(...,'k') doesn't work..

[Sebastian Castro]

Somehow there is no easy way to do it without going into the graphics objects themselves:

h = plotxy(INP1,INP2) % Whatever you plotted
ax = h{1}.Children
line = ax.Children
line.Color = 'k'

The other alternative is just to extract the numeric data from the simlog variable and plot from there:

xdata = INP1.series.values;
ydata = INP2.series.values;
plot(xdata,ydata,'k');

... but then you have to add your own titles, labels, etc. It's a tradeoff.

- Sebastian