System is SISO. Im looking for variable step discrete solver setting that guarantees solutions at every input time step. In the end I want to calculate the sum of squared errors. Thats why the vector lengths must agree. I want to avoid having to interpolate input to fixed step if possible.
MATLAB: How to tell Simulink to use the time steps of the input to produce exactly the same number of output steps as input
simulinkstep size
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x = 0.01;y = [1.01, 3.01]; %would be better as a column vector as you wouldn't to tranpose it in the arrayfun
n = 10;dxy = cell2mat(arrayfun(@(e) linspace(x, e, n), y', 'UniformOutput', false))Or using a loop:
x = 0.01;y = [1.01, 3.01]; %would be better as a column vector as you wouldn't to tranpose it in the arrayfunn = 10;dxy = zeros(numel(y), n);for row = 1:numel(y) dxy(row, :) = linspace(x, y(row), n);endor using Jan's idea but with R2016b or later syntax:
x = 0.01;y = [1.01, 3.01]; %would be better as a column vector as you wouldn't the transpose in the calculation of dxy
n = 10; dxy = (0:n-1) .* (y'-x)/n + xNo, there is not an obvious way to use Deval with Simulink output. However, you can use "Configuration Parameters"-->"Data Import/Export" to do the similar things that you can do with Deval. For instance, the "refine factor" allows a smoother output without reducing the step size or restricting the solver step size. Polynomial interpolation is used to interpolate in between time steps. The polynomial interpolation has the same order of accuracy as the solver. You can also request output at specific times with "produce additional output" or "Produce specificied output only" as shown below.
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