MATLAB: Getparam/setparam command for Tapped Delay block

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Hello,

I would like to change the parameters of my Tapped Delay blocks during simulation, but they do not appear on the list of my target parameters. Is there any possibility to do this? Also, is there a list of all the simulink blocks who's parameters can be changed during simulation?

Thanks in advance,

Manuel

Best Answer

Only the "Initial Condition:" parameter of a "Tapped Delay" block is "tunable" and hence can be changed during simulation.

Please refer to the following documentation page for more information on this:

http://www.mathworks.com/help/simulink/ug/using-tunable-parameters.html

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MATLAB: Setup BuildDirSuffix based on rtwoptions

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[  INPUT TARGET  ] = simplenarx_dataset;
input  = cell2mat(INPUT);
target = cell2mat(TARGET);
[ I N ] = size(input)  % [ 1 100 ]

[ O N ] = size(target) % [ 1 100 ]
plt = plt+1, figure(plt), hold on
plot( input,  'k', 'LineWidth', 2 )
plot( target, 'b', 'LineWidth', 2 )
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net = fitnet(10);          % static OL approximator
x   = [ input(1:end-2);input(2:end-1); ...
         target(1:end-2); target(2:end-1)];
t   = target(3:end);
rng(4151941)
[ net tr y e ] = train(net,x,t );
NMSE = mse(e)/var(t',1) %  3.1731e-07
Rsq     = 1 -  NMSE     % 1
 plt = plt+1, figure(plt), hold on
plot( 1:N-2, x, 'k', 'LineWidth',2)
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legend('INPUT', 'TARGET','OUTPUT')

Hope this helps.

Thank you for formally accepting my answer

Greg

PS: It seems to me that a STEPWISE QUASI-STATIC APPROXIMATOR to the CL (Closed Loop) NARXNET should be possible by using the function ADAPT (or even TRAIN?) in a loop that uses y(n-2:n-1) to predict y(n).

Best Answer

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