Diff: Filterdesign1.cpp

Revision:

11:17b1d5f5370b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Filterdesign1.cpp	Thu Oct 08 13:55:30 2015 +0000
@@ -0,0 +1,71 @@
+#include "Filterdesign1.h"
+#include "Filter.h"
+#include "Meanvalue.h"
+
+// Inputwaardes
+// Filter1a: 50Hz Notch
+double v1_50a = 0, v2_50a = 0;
+const double a1_50a = -1.56858163817, a2_50a = 0.96424138921;
+const double b0_50a = 1.00000000000, b1_50a = -1.61854514265, b2_50a = 1.00000000000;
+const double gain_50a = 1.000000;
+
+// Filter1b: 50Hz Notch
+double v1_50b = 0, v2_50b = 0;
+const double a1_50b = -1.61100357834, a2_50b = 0.96592171046;
+const double b0_50b = 1.00000000000, b1_50b = -1.61854514265, b2_50b = 1.00000000000;
+const double gain_50b = 0.965081;
+
+
+// Filter1: 20Hz HighPass
+double v1_HP = 0, v2_HP = 0;
+const double a1_HP = -0.76475499450, a2_HP = 0.27692273367;
+const double b0_HP = 1.00000000000, b1_HP = -2.00000000000, b2_HP = 1.00000000000;
+const double gain_HP = 0.510419;
+
+// Filter1: 5Hz LowPass
+double v1_LP = 0, v2_LP = 0;
+const double a1_LP = -1.16338171052, a2_LP = 0.42191097989;
+const double b0_LP = 1.00000000000, b1_LP = 2.00000000000, b2_LP = 1.00000000000;
+const double gain_LP = 0.064632;
+
+
+// constante variabelen:
+
+double gem = 0.4557; // gemiddelde waarde emgsignaal
+
+//gemiddelde bepalen
+double sum = 0;
+int a = 0;
+int delay = 40;
+int samples_length = 10;
+
+
+void Filterdesign1(double u, double &y, double &ymean)
+{
+    //u = input waarde
+    //y = output waarde
+
+    u = u - gem; // lees waarde van emg signaal uit
+
+    // Op deze manier worden de waardes ingelezen in Filter. Zorg dus voor dezelfde volgorde, zodat de waardes goed uitgelezen worden!:
+    // Filter(double u, double &v1, double &v2, const double a1, const double a2, const double b0, const double b1, const double b2, const double gain)
+
+    // 50Hz Notch filter
+    double y50a = Filter(u, v1_50a, v2_50a, a1_50a, a2_50a, b0_50a, b1_50a, b2_50a, gain_50a);
+    double y50b = Filter(y50a, v1_50b, v2_50b, a1_50b, a2_50b, b0_50b, b1_50b, b2_50b, gain_50b);
+
+    // High Pass filter. Tot 20Hz wordt weggefliterd
+    double yHP = Filter(y50b, v1_HP, v2_HP, a1_HP, a2_HP, b0_HP, b1_HP, b2_HP, gain_HP);
+
+    // Absolute waarde wordt genomen.
+    double y1 = fabs(yHP);
+
+    // Low Pass filter. Alles vanaf 5Hz wordt weggefilterd
+    double yLP = Filter(y1, v1_LP, v2_LP, a1_LP, a2_LP, b0_LP, b1_LP, b2_LP, gain_LP);
+
+    y = 10 * yLP;
+
+    //ymean = Meanvalue(y, sum, a, ymean, delay);
+    ymean = Meansmooth(y, samples_length, ymean);
+
+}
\ No newline at end of file