Simscape issue using "tablelookup"
2 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
Hi,
I am building a custom component that makes a call to "tablelookup" with the target values defined as "parameters", the code compiles without error my issue is that the resulting interpolation is wrong. The result appears to be saturated by the selected extrapolation method "nearest" even when the defined inputs are within the defined interpolation matrix. I have tried an alternative method with used "inputs" rather than "parameters" to declare the target inputs and this appears to work fine. I have provided a simplified sample code which replicates my issue. If anyone can see an issue with my approach, guidance would be much appreciated.
component interp_test % Table lookup test
parameters
u1 = {0, 'deg'};
u2 = {0, '1'};
end
outputs
y = {0, '1'};
end
parameters (Access = private)
xd = {[10:10:180], 'deg'};
yd = {[0.5:0.5:10], '1'};
zd = {[ 1.030454533 1.02020134 1.02020134 1.030454533 1.030454533 1.030454533 1.030454533 1.040810773 1.040810773 1.040810773 1.040810773 1.040810773 1.051271097 1.051271097 1.051271097 1.051271097 1.051271097 1.051271097 1.051271097 1.051271097
1.051271097 1.030454533 1.040810773 1.040810773 1.051271097 1.051271097 1.051271097 1.051271097 1.051271097 1.061836545 1.061836545 1.061836545 1.061836545 1.061836545 1.061836545 1.061836545 1.083287066 1.083287066 1.083287066 1.083287066
1.127496849 1.061836545 1.061836545 1.061836545 1.061836545 1.061836545 1.051271097 1.051271097 1.10517092 1.061836545 1.10517092 1.061836545 1.061836545 1.061836545 1.10517092 1.10517092 1.10517092 1.10517092 1.10517092 1.10517092
1.221402762 1.083287066 1.083287066 1.083287066 1.083287066 1.083287066 1.10517092 1.10517092 1.10517092 1.10517092 1.10517092 1.127496849 1.127496849 1.127496849 1.127496849 1.127496849 1.127496849 1.127496849 1.127496849 1.1502738
1.349858824 1.127496849 1.10517092 1.10517092 1.10517092 1.10517092 1.10517092 1.10517092 1.127496849 1.127496849 1.127496849 1.127496849 1.127496849 1.1502738 1.1502738 1.1502738 1.1502738 1.1502738 1.1502738 1.173510867
1.491824707 1.173510867 1.127496849 1.127496849 1.127496849 1.127496849 1.127496849 1.127496849 1.127496849 1.1502738 1.1502738 1.1502738 1.173510867 1.1502738 1.173510867 1.173510867 1.173510867 1.173510867 1.197217372 1.197217372
1.822118844 1.221402762 1.1502738 1.127496849 1.127496849 1.127496849 1.127496849 1.1502738 1.1502738 1.1502738 1.173510867 1.173510867 1.173510867 1.197217372 1.197217372 1.197217372 1.197217372 1.197217372 1.221402762 1.221402762
2.225540955 1.246076729 1.173510867 1.1502738 1.1502738 1.1502738 1.1502738 1.1502738 1.173510867 1.173510867 1.197217372 1.197217372 1.197217372 1.197217372 1.221402762 1.221402762 1.221402762 1.221402762 1.246076729 1.246076729
2.718281828 1.271249144 1.197217372 1.173510867 1.173510867 1.173510867 1.173510867 1.173510867 1.197217372 1.197217372 1.197217372 1.221402762 1.221402762 1.221402762 1.246076729 1.246076729 1.246076729 1.246076729 1.271249144 1.271249144
2.718281828 1.271249144 1.221402762 1.197217372 1.173510867 1.173510867 1.197217372 1.197217372 1.221402762 1.221402762 1.221402762 1.246076729 1.246076729 1.246076729 1.246076729 1.271249144 1.271249144 1.271249144 1.271249144 1.296930074
2.718281828 1.271249144 1.221402762 1.197217372 1.197217372 1.197217372 1.197217372 1.221402762 1.221402762 1.246076729 1.246076729 1.246076729 1.271249144 1.271249144 1.271249144 1.296930074 1.296930074 1.296930074 1.296930074 1.296930074
2.718281828 1.271249144 1.221402762 1.197217372 1.197217372 1.197217372 1.221402762 1.246076729 1.246076729 1.246076729 1.271249144 1.271249144 1.271249144 1.296930074 1.296930074 1.296930074 1.323129814 1.323129814 1.323129814 1.323129814
2.718281828 1.271249144 1.246076729 1.197217372 1.197217372 1.221402762 1.246076729 1.246076729 1.271249144 1.271249144 1.296930074 1.296930074 1.296930074 1.323129814 1.323129814 1.323129814 1.349858824 1.349858824 1.349858824 1.349858824
2.718281828 1.349858824 1.246076729 1.197217372 1.197217372 1.221402762 1.246076729 1.271249144 1.271249144 1.296930074 1.296930074 1.323129814 1.323129814 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824
2.718281828 1.349858824 1.246076729 1.221402762 1.221402762 1.221402762 1.246076729 1.271249144 1.296930074 1.296930074 1.323129814 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824
2.225540955 1.349858824 1.246076729 1.221402762 1.221402762 1.246076729 1.246076729 1.271249144 1.296930074 1.323129814 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824
2.718281828 1.349858824 1.246076729 1.221402762 1.221402762 1.246076729 1.271249144 1.296930074 1.323129814 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824
2.718281828 1.349858824 1.246076729 1.221402762 1.221402762 1.246076729 1.271249144 1.296930074 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824 1.349858824], '1'};
end
equations
y == tablelookup(xd, yd, zd, u1, u2, interpolation=spline, extrapolation=nearest);
end
end
0 Commenti
Risposte (1)
Darsana Thulasi
il 6 Lug 2015
The documentation for 'tablelookup' indicates that for the parameter 'extrapolation', the output value is chosen based on the input value being outside the range. You may have to choose 'interpolation' instead.
0 Commenti
Vedere anche
Categorie
Scopri di più su Foundation and Custom Domains in Help Center e File Exchange
Prodotti
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!