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Add PID functional range setting. With high powered heaters the current functional range of 10 degrees causes high overshoots as the PID needs to kick in before the temperature hits 10 degrees below target.

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This commit is contained in:
daid303 2012-12-12 09:08:37 +01:00
parent 5ff5cee8ce
commit 55ba90ac19
2 changed files with 5 additions and 3 deletions
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4
Marlin/temperature.cpp
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@ -319,11 +319,11 @@ void manage_heater()
#ifndef PID_OPENLOOP
pid_error[e] = target_temperature[e] - pid_input;
if(pid_error[e] > 10) {
if(pid_error[e] > PID_FUNCTIONAL_RANGE) {
pid_output = PID_MAX;
pid_reset[e] = true;
}
else if(pid_error[e] < -10) {
else if(pid_error[e] < -PID_FUNCTIONAL_RANGE) {
pid_output = 0;
pid_reset[e] = true;
}