chrono::vehicle::sedan::Sedan_SimpleMapPowertrain Class Reference

Description

Simple Sedan powertrain subsystem (based on engine speed-torque maps).

#include <Sedan_SimpleMapPowertrain.h>

Inheritance diagram for chrono::vehicle::sedan::Sedan_SimpleMapPowertrain:
Collaboration diagram for chrono::vehicle::sedan::Sedan_SimpleMapPowertrain:

Public Member Functions

 Sedan_SimpleMapPowertrain (const std::string &name)
 
virtual double GetMaxEngineSpeed () override
 Specify maximum engine speed.
 
virtual void SetEngineTorqueMaps (ChFunction_Recorder &map0, ChFunction_Recorder &mapF) override
 Set the engine speed-torque maps. More...
 
virtual void SetGearRatios (std::vector< double > &fwd_gear_ratios, double &reverse_gear_ratio) override
 Set the gears, i.e. More...
 
virtual void SetShiftPoints (std::vector< std::pair< double, double >> &shift_bands) override
 Set the ideal shift points for automatic gear shifting. More...
 
- Public Member Functions inherited from chrono::vehicle::ChSimpleMapPowertrain
 ChSimpleMapPowertrain (const std::string &name)
 
virtual std::string GetTemplateName () const override
 Get the name of the vehicle subsystem template.
 
virtual double GetMotorSpeed () const override
 Return the current engine speed.
 
virtual double GetMotorTorque () const override
 Return the current engine torque.
 
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 int GetCurrentTransmissionGear () const override
 Return the current transmission gear. More...
 
virtual double GetOutputTorque () const override
 Return the output torque from the powertrain. More...
 
virtual void SetDriveMode (ChPowertrain::DriveMode mode) override
 Use this function to set the mode of the transmission box.
 
void EnableAutomaticTransmission (bool automatic)
 Enable/disable automatic transmission. More...
 
void SetForwardGear (int igear)
 Set the current forward gear (1, 2, ...). More...
 
- Public Member Functions inherited from chrono::vehicle::ChPowertrain
 ChPowertrain (const std::string &name)
 
DriveMode GetDriveMode ()
 Return the current mode of the transmission.
 
- Public Member Functions inherited from chrono::vehicle::ChPart
 ChPart (const std::string &name)
 Construct a vehicle subsystem with the specified name. More...
 
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.
 
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.
 
void SetContactFrictionCoefficient (float friction_coefficient)
 Set coefficient of friction. More...
 
void SetContactRestitutionCoefficient (float restitution_coefficient)
 Set coefficient of restitution. More...
 
void SetContactMaterialProperties (float young_modulus, float poisson_ratio)
 Set contact material properties. More...
 
void SetContactMaterialCoefficients (float kn, float gn, float kt, float gt)
 Set contact material coefficients. More...
 
float GetCoefficientFriction () const
 Get coefficient of friction for contact material.
 
float GetCoefficientRestitution () const
 Get coefficient of restitution for contact material.
 
float GetYoungModulus () const
 Get Young's modulus of elasticity for contact material.
 
float GetPoissonRatio () const
 Get Poisson ratio for contact material.
 
float GetKn () const
 Get normal stiffness coefficient for contact material.
 
float GetKt () const
 Get tangential stiffness coefficient for contact material.
 
float GetGn () const
 Get normal viscous damping coefficient for contact material.
 
float GetGt () const
 Get tangential viscous damping coefficient for contact material.
 
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.
 

Additional Inherited Members

- Public Types inherited from chrono::vehicle::ChPowertrain
enum  DriveMode { FORWARD, NEUTRAL, REVERSE }
 Driving modes. 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...
 
- Protected Member Functions inherited from chrono::vehicle::ChPart
virtual void Create (const rapidjson::Document &d)
 Create a vehicle subsystem from JSON data. More...
 
- Static Protected Member Functions inherited from chrono::vehicle::ChPart
static void ExportBodyList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChBody >> bodies)
 Export the list of bodies to the specified JSON document.
 
static void ExportShaftList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChShaft >> shafts)
 Export the list of shafts to the specified JSON document.
 
static void ExportJointList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChLink >> joints)
 Export the list of joints to the specified JSON document.
 
static void ExportCouplesList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChShaftsCouple >> couples)
 Export the list of shaft couples to the specified JSON document.
 
static void ExportMarkerList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChMarker >> markers)
 Export the list of markers to the specified JSON document.
 
static void ExportLinSpringList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChLinkSpringCB >> springs)
 Export the list of translational springs to the specified JSON document.
 
static void ExportRotSpringList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChLinkRotSpringCB >> springs)
 Export the list of rotational springs to the specified JSON document.
 
static void ExportBodyLoadList (rapidjson::Document &jsonDocument, std::vector< std::shared_ptr< ChLoadBodyBody >> loads)
 Export the list of body-body loads to the specified JSON document.
 
- Protected Attributes inherited from chrono::vehicle::ChPowertrain
DriveMode m_drive_mode
 drive mode (neutral, forward, or reverse)
 
std::shared_ptr< ChDrivelinem_driveline
 associated driveline subsystem
 
- Protected Attributes inherited from chrono::vehicle::ChPart
std::string m_name
 subsystem name
 
bool m_output
 specifies whether or not output is generated for this subsystem
 
float m_friction
 contact coefficient of friction
 
float m_restitution
 contact coefficient of restitution
 
float m_young_modulus
 contact material Young modulus
 
float m_poisson_ratio
 contact material Poisson ratio
 
float m_kn
 normal contact stiffness
 
float m_gn
 normal contact damping
 
float m_kt
 tangential contact stiffness
 
float m_gt
 tangential contact damping
 

Member Function Documentation

void chrono::vehicle::sedan::Sedan_SimpleMapPowertrain::SetEngineTorqueMaps ( ChFunction_Recorder map0,
ChFunction_Recorder mapF 
)
overridevirtual

Set the engine speed-torque maps.

A concrete class must add the speed-torque points to the provided maps, using the ChFunction_Recorder::AddPoint() function.

Parameters
[out]map0engine map at zero throttle
[out]mapFengine map at full throttle

Implements chrono::vehicle::ChSimpleMapPowertrain.

void chrono::vehicle::sedan::Sedan_SimpleMapPowertrain::SetGearRatios ( std::vector< double > &  fwd_gear_ratios,
double &  reverse_gear_ratio 
)
overridevirtual

Set the gears, i.e.

the transmission ratios of the various gears. A concrete class must populate the vector of forward gear ratios, ordered as 1st, 2nd, etc. and provide a value for the single reverse gear ratio.

Parameters
[out]fwd_gear_ratioslist of forward gear ratios
[out]reverse_gear_ratiosingle reverse gear ratio

Implements chrono::vehicle::ChSimpleMapPowertrain.

void chrono::vehicle::sedan::Sedan_SimpleMapPowertrain::SetShiftPoints ( std::vector< std::pair< double, double >> &  shift_bands)
overridevirtual

Set the ideal shift points for automatic gear shifting.

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

Parameters
[out]shift_bandsdown-shift/up-shift points

Implements chrono::vehicle::ChSimpleMapPowertrain.