- reworked

git-svn-id: http://moon:8086/svn/projects/HendiControl@113 fda53097-d464-4ada-af97-ba876c37ca34

Control/brewpi/utils.py

@@ -0,0 +1,29 @@
+class Smoother:
+	def __init__(self, alpha):
+		self.a = alpha
+		self.b = 1-alpha
+		self.y = 0
+
+	def process(self, x):
+		self.y = self.b*self.y + self.a*x
+
+	def get_y(self):
+		return self.y
+
+class Stable:
+	def __init__(self, stable_count, err_max):
+		self.stable_time = stable_count
+		self.count = stable_count
+		self.err_max = err_max
+		self.x = 0
+
+	def process(self, x):
+		if self.count > 0:
+			self.count -= 1
+
+		if abs(x - self.x) >= self.err_max:
+			self.count = self.stable_time
+
+		is_stable = (self.count == 0)
+
+		return is_stable