public void SamplesProcessorFunctions_GetFeedbackCompositeTest()
{
// y[n] = x[n] + x[n-1] + 0.5 * x[n-2] - y[n-1]
Func <double, double> func = x => x;
Func <double, double> delay1 = SamplesProcessorFunctions.GetDelay(
func,
1.0);
Func <double, double> delay2 = SamplesProcessorFunctions.GetDelay(
func,
1.0);
Func <double, double> delay3 = SamplesProcessorFunctions.GetDelay(
x => delay2.Invoke(x),
2.0);
Func <double, double> xMain = x => x + delay1.Invoke(x) + 0.5 * delay3.Invoke(x);
var comp = SamplesProcessorFunctions.GetFeedbackComposite(
(x, ix) => xMain.Invoke(x) - ix,
1.0);
// Comparação com o solucionador de equações às diferenças
var diffSolv = SamplesProcessorFunctions.GetDifferenceEquationSolver(
func,
1.0,
new double[] { 1.0, 0.5 },
new double[] { -1.0 },
new double[] { 1.0, 2.0 },
new double[] { 1.0 });
var t = 0.0;
while (t < 100)
{
var expected = diffSolv.Invoke(t);
var actual = comp.Invoke(t);
Assert.AreEqual(expected, actual);
t += 1.0;
}
}
