Diff: RateLimiter.cpp

Revision:

0:d735360f91f9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/RateLimiter.cpp	Wed Jan 14 08:49:46 2015 +0000
@@ -0,0 +1,53 @@
+#include "RateLimiter.h"
+
+RateLimiter::RateLimiter () {
+    setLimits(1, -1, 0, 10e-3);
+}
+
+RateLimiter::RateLimiter (float R, float F, float y0, float T_d) {
+    setLimits(R, F, y0, T_d);
+}
+
+void RateLimiter::reset() {
+    y0 = 0;
+}
+
+void RateLimiter::setLimits(float R, float F) {
+    if (R < 0) {
+        R = -R;
+    }
+    if (F > 0) {
+        F = -F;
+    }
+    this->R = R;
+    this->F = F;
+}
+ 
+void RateLimiter::setLimits(float R, float F, float y0, float T_d) {
+    if (R < 0) {
+        R = -R;
+    }
+    if (F > 0) {
+        F = -F;
+    }
+    if (T_d <= 1e-6) {
+        T_d = 1e-3;
+    }
+    this->T_d = T_d;
+    this->y0 = y0;
+    this->R = R;
+    this->F = F;
+}
+ 
+float RateLimiter::out (float u) {
+    rate = (u - y0) / T_d;
+    if (rate > R) {
+        y = R * T_d + y0;
+    } else if (rate < F) {
+        y = F * T_d + y0;
+    } else {
+        y = u;
+    }
+    y0 = y;
+    return y;
+}
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