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Update RelayOutput for minimum relay on time and consistent window behavior

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This commit is contained in:
James Prior 2013-01-23 19:38:45 -06:00
parent d21d7e3d09
commit 0aa6c0a88f
1 changed files with 4 additions and 3 deletions
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7
PID_v1/Examples/PID_RelayOutput/PID_RelayOutput.ino
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@ -24,6 +24,7 @@ double Setpoint, Input, Output;
PID myPID(&Input, &Output, &Setpoint,2,5,1, DIRECT);
int WindowSize = 5000;
int minWindow = 500;
unsigned long windowStartTime;
void setup()
{
@ -42,16 +43,16 @@ void setup()
void loop()
{
Input = analogRead(0);
myPID.Compute();
/************************************************
* turn the output pin on/off based on pid output
************************************************/
if(millis() - windowStartTime>WindowSize)
{ //time to shift the Relay Window
{ //time to shift the Relay Window and recalculate
windowStartTime += WindowSize;
myPID.Compute();
}
if(Output < millis() - windowStartTime) digitalWrite(RelayPin,HIGH);
if(Output > minWindow && Output < millis() - windowStartTime) digitalWrite(RelayPin,HIGH);
else digitalWrite(RelayPin,LOW);
}