From 11d3ea0245fb578b66911cbf44322a0c4dadac8c Mon Sep 17 00:00:00 2001
From: Markus Quaritsch <markus.quaritsch@tugraz.at>
Date: Tue, 12 Feb 2019 17:59:19 +0100
Subject: [PATCH] TC: output speed may already be too high so that no drag
operating point is found (during acceleration) - use high constant value
---
.../SimulationComponent/Impl/TorqueConverter.cs | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/VectoCore/VectoCore/Models/SimulationComponent/Impl/TorqueConverter.cs b/VectoCore/VectoCore/Models/SimulationComponent/Impl/TorqueConverter.cs
index 002507a292..b88d3b7e23 100644
--- a/VectoCore/VectoCore/Models/SimulationComponent/Impl/TorqueConverter.cs
+++ b/VectoCore/VectoCore/Models/SimulationComponent/Impl/TorqueConverter.cs
@@ -183,8 +183,11 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
var dryOperatingPointMin = GetDragPowerOperatingPoint(
absTime, dt, outAngularVelocity, engineResponse,
PreviousState.InTorque * PreviousState.InAngularVelocity);
- var avgOutSpeedMin = (PreviousState.OutAngularVelocity + dryOperatingPointMin.OutAngularVelocity) / 2.0;
- var deltaMin = (outTorque - dryOperatingPointMin.OutTorque) * avgOutSpeedMin;
+ var deltaMin = -double.MaxValue.SI<Watt>() / 20;
+ if (dryOperatingPointMin != null) {
+ var avgOutSpeedMin = (PreviousState.OutAngularVelocity + dryOperatingPointMin.OutAngularVelocity) / 2.0;
+ deltaMin = (outTorque - dryOperatingPointMin.OutTorque) * avgOutSpeedMin;
+ }
return new ResponseDryRun {
Source = this,
@@ -230,7 +233,7 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
absTime, dt, outAngularVelocity, engineSpeed,
x => x.DeltaDragLoad.IsGreater(0),
x => VectoMath.Abs(DataBus.EngineSpeed - x.EngineSpeed).Value());
-
+ if (retVal != null)
retVal.Creeping = true;
return retVal;
}
@@ -248,6 +251,7 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
DataBus.EngineSpeed, outAngularVelocity, _engineInertia, dt, previousPower);
var maxInputSpeed = VectoMath.Min(ModelData.TorqueConverterSpeedLimit, DataBus.EngineN95hSpeed);
if (operatingPoint.InAngularVelocity.IsGreater(maxInputSpeed)) {
+ //operatingPoint = ModelData.FindOperatingPoint(maxInputSpeed, outAngularVelocity);
operatingPoint = FindValidTorqueConverterOperatingPoint(
absTime, dt, outAngularVelocity, maxInputSpeed,
x => x.DeltaFullLoad.IsSmaller(0),
@@ -297,6 +301,9 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
search.Add(res);
}
+ if (search.Count == 0) {
+ return null;
+ }
var selected = search.Where(selector).OrderBy(orderFunc).First();
retVal = ModelData.FindOperatingPoint(selected.EngineSpeed, outAngularVelocity);
--
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