chrono::vehicle::ChAutomaticTransmissionSimpleMap Class Referenceabstract

Description

Template for an automatic transmission model based on a simple gear-shifting model.

This transmission has no torque converter. It accepts a single reverse gear and any number of forward gears. In automatic mode, gear shifting is done based on specified ideal shift points.

#include <ChAutomaticTransmissionSimpleMap.h>

Inheritance diagram for chrono::vehicle::ChAutomaticTransmissionSimpleMap:
Collaboration diagram for chrono::vehicle::ChAutomaticTransmissionSimpleMap:

Public Member Functions

virtual std::string GetTemplateName () const override
 Get the name of the vehicle subsystem template.
 
virtual double GetTorqueConverterSlippage () const override
 Return the value of slippage in the torque converter. More...
 
virtual double GetTorqueConverterInputTorque () const override
 Return the input torque to the torque converter. More...
 
virtual double GetTorqueConverterOutputTorque () const override
 Return the output torque from the torque converter. More...
 
virtual double GetTorqueConverterOutputSpeed () const override
 Return the torque converter output shaft speed. More...
 
virtual double GetOutputDriveshaftTorque () const override
 Return the transmission output torque on the driveshaft. More...
 
virtual double GetOutputMotorshaftSpeed () const override
 Return the transmission output speed of the motorshaft. More...
 
- Public Member Functions inherited from chrono::vehicle::ChTransmission
int GetCurrentGear () const
 Return the current transmission gear. More...
 
void SetDriveMode (DriveMode mode)
 Set the drive mode.
 
DriveMode GetDriveMode () const
 Return the current drive mode.
 
void SetMode (Mode mode)
 Set the transmission mode (automatic or manual). More...
 
Mode GetMode () const
 Get the current transmission mode.
 
void ShiftUp ()
 Shift up.
 
void ShiftDown ()
 Shift down.
 
void SetGear (int gear)
 Shift to the specified gear. More...
 
- Public Member Functions inherited from chrono::vehicle::ChPart
const std::string & GetName () const
 Get the name identifier for this subsystem.
 
void SetName (const std::string &name)
 Set the name identifier for this subsystem.
 
bool IsInitialized () const
 Return flag indicating whether or not the part is fully constructed.
 
double GetMass () const
 Get the subsystem mass. More...
 
const ChFrameGetCOMFrame () const
 Get the current subsystem COM frame (relative to and expressed in the subsystem's reference frame). More...
 
const ChMatrix33GetInertia () const
 Get the current subsystem inertia (relative to the subsystem COM frame). More...
 
const ChFrameGetTransform () const
 Get the current subsystem position relative to the global frame. More...
 
void SetVisualizationType (VisualizationType vis)
 Set the visualization mode for this subsystem.
 
virtual void AddVisualizationAssets (VisualizationType vis)
 Add visualization assets to this subsystem, for the specified visualization mode.
 
virtual void RemoveVisualizationAssets ()
 Remove all visualization assets from this subsystem.
 
virtual void SetOutput (bool state)
 Enable/disable output for this subsystem.
 
bool OutputEnabled () const
 Return the output state for this subsystem.
 
virtual void ExportComponentList (rapidjson::Document &jsonDocument) const
 Export this subsystem's component list to the specified JSON object. More...
 
virtual void Output (ChVehicleOutput &database) const
 Output data for this subsystem's component list to the specified database.
 

Protected Member Functions

 ChAutomaticTransmissionSimpleMap (const std::string &name)
 
virtual void SetShiftPoints (std::vector< std::pair< double, double >> &shift_bands)=0
 Set the ideal shift points for automatic gear shifting. More...
 
- Protected Member Functions inherited from chrono::vehicle::ChTransmission
 ChTransmission (const std::string &name="")
 
virtual void InitializeInertiaProperties () override
 Initialize subsystem inertia properties. More...
 
virtual void UpdateInertiaProperties () override
 Update subsystem inertia properties. More...
 
virtual void SetGearRatios (std::vector< double > &fwd, double &rev)=0
 Set the transmission gear ratios (one or more forward gear ratios and a single reverse gear ratio).
 
virtual void OnGearShift ()
 Perform any action required on a gear shift (the new gear and gear ratio are available).
 
virtual void OnNeutralShift ()
 Perform any action required on placing the transmission in neutral.
 
- Protected Member Functions inherited from chrono::vehicle::ChPart
 ChPart (const std::string &name)
 Construct a vehicle subsystem with the specified name.
 
void AddMass (double &mass)
 Add this subsystem's mass. More...
 
void AddInertiaProperties (ChVector<> &com, ChMatrix33<> &inertia)
 Add this subsystem's inertia properties. More...
 
virtual void Create (const rapidjson::Document &d)
 Create a vehicle subsystem from JSON data. More...
 
void ExportBodyList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChBody >> bodies) const
 Export the list of bodies to the specified JSON document.
 
void ExportShaftList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChShaft >> shafts) const
 Export the list of shafts to the specified JSON document.
 
void ExportJointList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChLink >> joints) const
 Export the list of joints to the specified JSON document.
 
void ExportCouplesList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChShaftsCouple >> couples) const
 Export the list of shaft couples to the specified JSON document.
 
void ExportMarkerList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChMarker >> markers) const
 Export the list of markers to the specified JSON document.
 
void ExportLinSpringList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChLinkTSDA >> springs) const
 Export the list of translational springs to the specified JSON document.
 
void ExportRotSpringList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChLinkRSDA >> springs) const
 Export the list of rotational springs to the specified JSON document.
 
void ExportBodyLoadList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChLoadBodyBody >> loads) const
 Export the list of body-body loads to the specified JSON document.
 

Additional Inherited Members

- Public Types inherited from chrono::vehicle::ChTransmission
enum  DriveMode { DriveMode::FORWARD, DriveMode::NEUTRAL, DriveMode::REVERSE }
 Driving modes. More...
 
enum  Mode { Mode::AUTOMATIC, Mode::MANUAL }
 Transmission mode. More...
 
- Static Public Member Functions inherited from chrono::vehicle::ChPart
static ChMatrix33 TransformInertiaMatrix (const ChVector<> &moments, const ChVector<> &products, const ChMatrix33<> &vehicle_rot, const ChMatrix33<> &body_rot)
 Utility function for transforming inertia tensors between centroidal frames. More...
 
- Static Protected Member Functions inherited from chrono::vehicle::ChPart
static void RemoveVisualizationAssets (std::shared_ptr< ChPhysicsItem > item)
 Erase all visual shapes from the visual model associated with the specified physics item (if any).
 
static void RemoveVisualizationAsset (std::shared_ptr< ChPhysicsItem > item, std::shared_ptr< ChVisualShape > shape)
 Erase the given shape from the visual model associated with the specified physics item (if any).
 
- Protected Attributes inherited from chrono::vehicle::ChTransmission
Mode m_mode
 transmission mode (automatic or manual)
 
DriveMode m_drive_mode
 drive mode (neutral, forward, or reverse)
 
std::vector< double > m_gear_ratios
 gear ratios (0: reverse, 1+: forward)
 
int m_current_gear
 current transmission gear (0: reverse, 1+: forward)
 
double m_current_gear_ratio
 current gear ratio (positive for forward, negative for reverse)
 
- Protected Attributes inherited from chrono::vehicle::ChPart
std::string m_name
 subsystem name
 
bool m_initialized
 specifies whether ot not the part is fully constructed
 
bool m_output
 specifies whether or not output is generated for this subsystem
 
std::shared_ptr< ChPartm_parent
 parent subsystem (empty if parent is vehicle)
 
double m_mass
 subsystem mass
 
ChMatrix33 m_inertia
 inertia tensor (relative to subsystem COM)
 
ChFrame m_com
 COM frame (relative to subsystem reference frame)
 
ChFrame m_xform
 subsystem frame expressed in the global frame
 

Member Function Documentation

◆ GetOutputDriveshaftTorque()

virtual double chrono::vehicle::ChAutomaticTransmissionSimpleMap::GetOutputDriveshaftTorque ( ) const
inlineoverridevirtual

Return the transmission output torque on the driveshaft.

This is the torque that is passed to the driveline subsystem, thus providing the interface between the powertrain and vehicle systems.

Implements chrono::vehicle::ChTransmission.

◆ GetOutputMotorshaftSpeed()

virtual double chrono::vehicle::ChAutomaticTransmissionSimpleMap::GetOutputMotorshaftSpeed ( ) const
inlineoverridevirtual

Return the transmission output speed of the motorshaft.

This represents the output from the transmision subsystem that is passed to the engine subsystem.

Implements chrono::vehicle::ChTransmission.

◆ GetTorqueConverterInputTorque()

virtual double chrono::vehicle::ChAutomaticTransmissionSimpleMap::GetTorqueConverterInputTorque ( ) const
inlineoverridevirtual

Return the input torque to the torque converter.

This simplified model does not have a torque converter.

Implements chrono::vehicle::ChTransmission.

◆ GetTorqueConverterOutputSpeed()

virtual double chrono::vehicle::ChAutomaticTransmissionSimpleMap::GetTorqueConverterOutputSpeed ( ) const
inlineoverridevirtual

Return the torque converter output shaft speed.

This simplified model does not have a torque converter.

Implements chrono::vehicle::ChTransmission.

◆ GetTorqueConverterOutputTorque()

virtual double chrono::vehicle::ChAutomaticTransmissionSimpleMap::GetTorqueConverterOutputTorque ( ) const
inlineoverridevirtual

Return the output torque from the torque converter.

This simplified model does not have a torque converter.

Implements chrono::vehicle::ChTransmission.

◆ GetTorqueConverterSlippage()

virtual double chrono::vehicle::ChAutomaticTransmissionSimpleMap::GetTorqueConverterSlippage ( ) const
inlineoverridevirtual

Return the value of slippage in the torque converter.

This simplified model does not have a torque converter.

Implements chrono::vehicle::ChTransmission.

◆ SetShiftPoints()

virtual void chrono::vehicle::ChAutomaticTransmissionSimpleMap::SetShiftPoints ( std::vector< std::pair< double, double >> &  shift_bands)
protectedpure virtual

Set the ideal shift points for automatic gear shifting.

For each forward gear, specify the min and max engine speed for shifting (down and up, respectively).

Implemented in chrono::vehicle::kraz::Kraz_tractor_AutomaticTransmissionSimpleMap, chrono::vehicle::fmtv::FMTV_AutomaticTransmissionSimpleMap, chrono::vehicle::hmmwv::HMMWV_AutomaticTransmissionSimpleMap, chrono::vehicle::m113::M113_AutomaticTransmissionSimple, chrono::vehicle::m113::M113_AutomaticTransmissionSimpleMap, chrono::vehicle::marder::Marder_AutomaticTransmissionSimple, chrono::vehicle::marder::Marder_AutomaticTransmissionSimpleMap, chrono::vehicle::mrole::mrole_AutomaticTransmissionSimpleMap, chrono::vehicle::fmtv::FMTV_AutomaticTransmissionSimple, chrono::vehicle::rccar::RCCar_AutomaticTransmissionSimpleMap, chrono::vehicle::AutomaticTransmissionSimpleMap, chrono::vehicle::feda::FEDA_AutomaticTransmissionSimpleMap, chrono::vehicle::man::MAN_5t_AutomaticTransmissionSimple, chrono::vehicle::man::MAN_5t_AutomaticTransmissionSimpleMap, chrono::vehicle::man::MAN_7t_AutomaticTransmissionSimple, chrono::vehicle::man::MAN_7t_AutomaticTransmissionSimpleMap, chrono::vehicle::uaz::UAZBUS_AutomaticTransmissionSimpleMap, chrono::vehicle::unimog::U401_AutomaticTransmissionSimpleMap, chrono::vehicle::gator::Gator_AutomaticTransmissionSimple, chrono::vehicle::gator::Gator_AutomaticTransmissionSimpleMap, chrono::vehicle::sedan::Sedan_AutomaticTransmissionSimpleMap, chrono::vehicle::citybus::CityBus_AutomaticTransmissionSimpleMap, chrono::vehicle::generic::Generic_AutomaticTransmissionSimpleMap, and chrono::vehicle::generic::Generic_AutomaticTransmissionSimple.


The documentation for this class was generated from the following files:
  • /builds/uwsbel/chrono/src/chrono_vehicle/powertrain/ChAutomaticTransmissionSimpleMap.h
  • /builds/uwsbel/chrono/src/chrono_vehicle/powertrain/ChAutomaticTransmissionSimpleMap.cpp