From 6b7dc0b15d01b73fc2ba17517ce1dd0763f62722 Mon Sep 17 00:00:00 2001
From: Markus Quaritsch <markus.quaritsch@tugraz.at>
Date: Wed, 30 Mar 2022 09:01:41 +0200
Subject: [PATCH] set gearbox disengage speed for AT transmissions based on
downshift line in first locked gear
---
.../DataObjectAdapter/DeclarationDataAdapter.cs | 12 ++++++++++++
.../DataObjectAdapter/EngineeringDataAdapter.cs | 12 ++++++++++++
.../SimulationComponent/Data/GearboxData.cs | 15 +++++++++++++++
.../SimulationComponent/Impl/ATShiftStrategy.cs | 2 +-
.../Models/SimulationComponent/Impl/Gearbox.cs | 2 +-
5 files changed, 41 insertions(+), 2 deletions(-)
diff --git a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapter.cs b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapter.cs
index e89c136637..00d0635078 100644
--- a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapter.cs
+++ b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapter.cs
@@ -362,6 +362,18 @@ namespace TUGraz.VectoCore.InputData.Reader.DataObjectAdapter
retVal.TorqueConverterData.CertificationNumber = torqueConverter.CertificationNumber;
}
+ // update disengageWhenHaltingSpeed
+ if (retVal.Type.AutomaticTransmission()) {
+ var firstGear = retVal.GearList.First(x => x.IsLockedGear());
+ if (retVal.Gears[firstGear.Gear].ShiftPolygon.Downshift.Any()) {
+ var downshiftSpeedInc = retVal.Gears[firstGear.Gear].ShiftPolygon
+ .InterpolateDownshiftSpeed(0.SI<NewtonMeter>()) * 1.05;
+ var vehicleSpeedDisengage = downshiftSpeedInc / axlegearRatio / retVal.Gears[firstGear.Gear].Ratio *
+ dynamicTyreRadius;
+ retVal.DisengageWhenHaltingSpeed = vehicleSpeedDisengage;
+ }
+ }
+
return retVal;
}
diff --git a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/EngineeringDataAdapter.cs b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/EngineeringDataAdapter.cs
index 6c827f53d6..a2c0839d04 100644
--- a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/EngineeringDataAdapter.cs
+++ b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/EngineeringDataAdapter.cs
@@ -333,6 +333,18 @@ namespace TUGraz.VectoCore.InputData.Reader.DataObjectAdapter
gearshiftData.CLUpshiftMinAcceleration, gearshiftData.CCUpshiftMinAcceleration);
}
+ // update disengageWhenHaltingSpeed
+ if (retVal.Type.AutomaticTransmission()) {
+ var firstGear = retVal.GearList.First(x => x.IsLockedGear());
+ if (retVal.Gears[firstGear.Gear].ShiftPolygon.Downshift.Any()) {
+ var downshiftSpeedInc = retVal.Gears[firstGear.Gear].ShiftPolygon
+ .InterpolateDownshiftSpeed(0.SI<NewtonMeter>()) * 1.05;
+ var vehicleSpeedDisengage = downshiftSpeedInc / axlegearRatio / retVal.Gears[firstGear.Gear].Ratio *
+ dynamicTyreRadius;
+ retVal.DisengageWhenHaltingSpeed = vehicleSpeedDisengage;
+ }
+ }
+
return retVal;
}
diff --git a/VectoCore/VectoCore/Models/SimulationComponent/Data/GearboxData.cs b/VectoCore/VectoCore/Models/SimulationComponent/Data/GearboxData.cs
index 1927a02be3..eaaa887417 100644
--- a/VectoCore/VectoCore/Models/SimulationComponent/Data/GearboxData.cs
+++ b/VectoCore/VectoCore/Models/SimulationComponent/Data/GearboxData.cs
@@ -38,6 +38,7 @@ using System.Runtime.Serialization;
using Newtonsoft.Json;
using TUGraz.VectoCommon.Models;
using TUGraz.VectoCommon.Utils;
+using TUGraz.VectoCore.Configuration;
using TUGraz.VectoCore.Models.SimulationComponent.Data.Gearbox;
using TUGraz.VectoCore.Models.SimulationComponent.Impl;
@@ -52,6 +53,7 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Data
public class GearboxData : SimulationComponentData
{
private GearList _gearlist;
+ private MeterPerSecond _disengageWhenHaltingSpeed;
public GearboxType Type { get; internal set; }
@@ -73,6 +75,19 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Data
[JsonIgnore]
public GearList GearList => _gearlist ?? (_gearlist = CreateGearList());
+ public MeterPerSecond DisengageWhenHaltingSpeed {
+ get {
+ return _disengageWhenHaltingSpeed != null
+ ? _disengageWhenHaltingSpeed
+ : (Type.AutomaticTransmission()
+ ? Constants.SimulationSettings.ATGearboxDisengageWhenHaltingSpeed
+ : Constants.SimulationSettings.ClutchDisengageWhenHaltingSpeed);
+ }
+ internal set {
+ _disengageWhenHaltingSpeed = value;
+ }
+ }
+
private GearList CreateGearList()
{
var gearList = new List<GearshiftPosition>();
diff --git a/VectoCore/VectoCore/Models/SimulationComponent/Impl/ATShiftStrategy.cs b/VectoCore/VectoCore/Models/SimulationComponent/Impl/ATShiftStrategy.cs
index 3e73811c52..1ab62b193e 100644
--- a/VectoCore/VectoCore/Models/SimulationComponent/Impl/ATShiftStrategy.cs
+++ b/VectoCore/VectoCore/Models/SimulationComponent/Impl/ATShiftStrategy.cs
@@ -157,7 +157,7 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
var braking = DataBus.DriverInfo.DriverBehavior == DrivingBehavior.Braking;
var torqueNegative = outTorque.IsSmaller(0);
var slowerThanDisengageSpeed =
- DataBus.VehicleInfo.VehicleSpeed.IsSmaller(Constants.SimulationSettings.ATGearboxDisengageWhenHaltingSpeed);
+ DataBus.VehicleInfo.VehicleSpeed.IsSmaller(GearboxModelData.DisengageWhenHaltingSpeed);
var disengageBeforeHalting = braking && torqueNegative && slowerThanDisengageSpeed;
// 2) L -> 0: disengage if inAngularVelocity == 0
diff --git a/VectoCore/VectoCore/Models/SimulationComponent/Impl/Gearbox.cs b/VectoCore/VectoCore/Models/SimulationComponent/Impl/Gearbox.cs
index 28684b2176..c26d183e39 100644
--- a/VectoCore/VectoCore/Models/SimulationComponent/Impl/Gearbox.cs
+++ b/VectoCore/VectoCore/Models/SimulationComponent/Impl/Gearbox.cs
@@ -258,7 +258,7 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
(inAngularVelocity.IsSmaller(DataBus.EngineInfo.EngineIdleSpeed))) &&
(DataBus.Brakes.BrakePower.IsGreater(0) || inTorque.IsSmaller(0));
var vehicleSpeedBelowThreshold =
- DataBus.VehicleInfo.VehicleSpeed.IsSmaller(Constants.SimulationSettings.ClutchDisengageWhenHaltingSpeed);
+ DataBus.VehicleInfo.VehicleSpeed.IsSmaller(ModelData.DisengageWhenHaltingSpeed);
if (halted || (driverDeceleratingNegTorque && vehicleSpeedBelowThreshold)) {
EngageTime = VectoMath.Max(EngageTime, absTime + dt);
_strategy?.Disengage(absTime, dt, outTorque, outAngularVelocity);
--
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