public object Clone( )
{
Ke2510Settings v = ( Ke2510Settings )this.MemberwiseClone( );
return(v);
}
public double StabilizeTemperatureSelfTuningFalse( ) // was StabilizeTemperature
{
if (doOverrideSettings)
{
settings_ = overridingSettings_;
}
gpib_.Write(SET_SOURCE_TEMPERATURE);
System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");
var target = this.getTargetTemperature( );
LogMessage("Starting to stabilize");
bool hitTimeout = false;
TimeSpan timeout = new TimeSpan(0, 0, 0, 0, ( int )(settings_.StabilizationTimeout * 1000));
DateTime start = DateTime.UtcNow;
Queue <double> tempQ = new Queue <double>( );
double avg = 0;
double stddev = 1000; // a large number
double temp;
double dif;
TimeSpan delay = new TimeSpan(0, 0, 0, 0, ( int )(settings_.StabilizationDelay * 1000));
;
Stopwatch t = new Stopwatch( );
t.Start( );
PIDSet PID = new PIDSet( ), stablePIDset_;
double sum = 0;
double sum2 = 0;
bool exitForbidden = true;
int iteration = 0;
do
{
try {
iteration++;
hitTimeout = (DateTime.UtcNow - start) > timeout;
Thread.Sleep(( int )delay.TotalMilliseconds);
stablePIDset_ = calcStablePidSet(target);
temp = measureTemperature( );
tempQ.Enqueue(temp);
sum += temp;
sum2 += Math.Pow(temp, 2);
if (tempQ.Count > settings_.StabilizationSamples)
{
double tdequed = tempQ.Dequeue( );
sum -= tdequed;
sum2 -= Math.Pow(tdequed, 2);
exitForbidden = false;
}
avg = sum / tempQ.Count;
stddev = Math.Sqrt(sum2 / ( double )tempQ.Count - Math.Pow(avg, 2));
bool stdDevOK = (stddev < settings_.MaxTStdDev);
bool offsetOK = (Math.Abs(avg - target) < settings_.MaxTError);
if (debugMode_)
{
LogMessage(("Iteration = " + iteration + " Samples used in calculation = " + settings_.StabilizationSamples));
LogMessage(("T = " + temp));
LogMessage(("stddev = " + stddev + " Limit = " + settings_.MaxTStdDev + " OK =" + stdDevOK.ToString( )));
LogMessage(("Mean offset = " + (avg - target) + " Limit = " + settings_.MaxTError + " OK =" + offsetOK.ToString( )));
LogMessage("----");
}
isStable_ = stdDevOK && offsetOK;
if (isStable_)
{
if (!PID.EqualTo(stablePIDset_))
{
LogMessage("Switching to stable PID parameters"); // ...if necessary
setTempSourcePidParams(stablePIDset_);
PID = stablePIDset_;
isStable_ = false; // isStable must be recalculated at least once if PID's were changed..
}
}
else if (!PID.EqualTo(settings_.Fast))
{
LogMessage("Switching to fast PID parameters");
setTempSourcePidParams(settings_.Fast);
PID = settings_.Fast;
}
dif = temp - target;
if (writeLogMessages_)
{
if (t.ElapsedMilliseconds > 10000)
{
LogMessage("Currently at: " + measureTemperature( ) + ". Dif is: " + dif);
t.Reset( );
t.Start( );
}
}
}
catch (Exception ex) {
LogMessage("Got an exception in stabilization loop: " + ex.Message + "(this has no effect on temperature)");
continue;
}
} while((!hitTimeout && !isStable_) || exitForbidden || stabilizeForever_);
DateTime stop = DateTime.UtcNow;
if (hitTimeout)
{
LogMessage("Hit timelimit while stabilizing temperature");
throw new Exception("Hit timelimit while stabilizing temperature");
}
else
{
LogMessage("Done stabilizing after " + (stop - start).TotalSeconds.ToString("####.0") + " Seconds.");
return((stop - start).TotalMinutes);
}
}
