Description

Template for a balancer subchassis system.

#include <ChBalancer.h>

Inheritance diagram for chrono::vehicle::ChBalancer:
Collaboration diagram for chrono::vehicle::ChBalancer:

Public Member Functions

virtual std::string GetTemplateName () const override
 Get the name of the vehicle subsystem template.
 
virtual void Initialize (std::shared_ptr< ChChassis > chassis, const ChVector3d &location) override
 Initialize this subchassis subsystem. More...
 
virtual void AddVisualizationAssets (VisualizationType vis) override
 Add visualization assets for the balancer subsystem.
 
virtual void RemoveVisualizationAssets () override
 Remove visualization assets for the balancer subsystem.
 
- Public Member Functions inherited from chrono::vehicle::ChSubchassis
const ChVector3dGetLocation () const
 Get the location of the subchassis relative to the chassis reference frame. More...
 
std::shared_ptr< ChBodyGetBeam (VehicleSide side) const
 Get a handle to the beam body on the specified side.
 
- 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 SetOutput (bool state)
 Enable/disable output for this subsystem.
 
bool OutputEnabled () const
 Return the output state for this subsystem.
 

Protected Types

enum  PointId { BEAM, REVOLUTE, NUM_POINTS }
 Identifiers for the various hardpoints. More...
 

Protected Member Functions

 ChBalancer (const std::string &name)
 
virtual void InitializeInertiaProperties () override
 Initialize subsystem inertia properties. More...
 
virtual void UpdateInertiaProperties () override
 Update subsystem inertia properties. More...
 
virtual const ChVector3d GetLocation (PointId which)=0
 Return the location of the specified hardpoint. More...
 
virtual const ChVector3d GetDirection ()
 Return the direction of the pin joint (default: Y axis).
 
virtual double GetBalancerBeamMass () const =0
 Get the balancer mass.
 
virtual const ChVector3dGetBalancerBeamInertia () const =0
 Get the inertia tensor of the chassis body.
 
virtual const double GetBalancerMaxPitch () const =0
 Get the rear balancer min/max pitch. More...
 
virtual const ChVector3dGetBalancerBeamDimensions () const =0
 Get balancer dimensions (for visualization).
 
virtual std::shared_ptr< ChVehicleBushingDataGetBushingData () const
 Return stiffness and damping data for the balancer bushing. More...
 
- Protected Member Functions inherited from chrono::vehicle::ChSubchassis
 ChSubchassis (const std::string &name)
 Construct a subchassis subsystem with given name.
 
- 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 (ChVector3d &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.
 

Protected Attributes

std::shared_ptr< ChVehicleJointm_balancer_joint [2]
 balancer pivot joints
 
- Protected Attributes inherited from chrono::vehicle::ChSubchassis
ChVector3d m_rel_loc
 location relative to chassis
 
std::shared_ptr< ChBodym_beam [2]
 handles to beam bodies
 
- 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
 

Additional Inherited Members

- Static Public Member Functions inherited from chrono::vehicle::ChPart
static ChMatrix33 TransformInertiaMatrix (const ChVector3d &moments, const ChVector3d &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).
 

Member Enumeration Documentation

◆ PointId

Identifiers for the various hardpoints.

Enumerator
BEAM 

beam location

REVOLUTE 

location of revolute joint

Member Function Documentation

◆ GetBalancerMaxPitch()

virtual const double chrono::vehicle::ChBalancer::GetBalancerMaxPitch ( ) const
protectedpure virtual

Get the rear balancer min/max pitch.

Used only if using a kinematic joint.

Implemented in chrono::vehicle::Balancer, and chrono::vehicle::fmtv::MTV_Balancer.

◆ GetBushingData()

virtual std::shared_ptr<ChVehicleBushingData> chrono::vehicle::ChBalancer::GetBushingData ( ) const
inlineprotectedvirtual

Return stiffness and damping data for the balancer bushing.

Returning nullptr (default) results in using a kinematic revolute joint.

Reimplemented in chrono::vehicle::Balancer.

◆ GetLocation()

virtual const ChVector3d chrono::vehicle::ChBalancer::GetLocation ( PointId  which)
protectedpure virtual

Return the location of the specified hardpoint.

The returned location must be expressed in the subchassis reference frame.

Implemented in chrono::vehicle::fmtv::MTV_Balancer.

◆ Initialize()

void chrono::vehicle::ChBalancer::Initialize ( std::shared_ptr< ChChassis chassis,
const ChVector3d location 
)
overridevirtual

Initialize this subchassis subsystem.

The subchassis is initialized by attaching it to the specified chassis at the specified location (with respect to and expressed in the reference frame of the chassis). It is assumed that the subchassis reference frame is always aligned with the chassis reference frame.

Parameters
[in]chassischassis
[in]locationlocation relative to the chassis frame

Reimplemented from chrono::vehicle::ChSubchassis.

◆ InitializeInertiaProperties()

void chrono::vehicle::ChBalancer::InitializeInertiaProperties ( )
overrideprotectedvirtual

Initialize subsystem inertia properties.

Derived classes must override this function and set the subsystem mass (m_mass) and, if constant, the subsystem COM frame and its inertia tensor. This function is called during initialization of the vehicle system.

Implements chrono::vehicle::ChPart.

◆ UpdateInertiaProperties()

void chrono::vehicle::ChBalancer::UpdateInertiaProperties ( )
overrideprotectedvirtual

Update subsystem inertia properties.

Derived classes must override this function and set the global subsystem transform (m_xform) and, unless constant, the subsystem COM frame (m_com) and its inertia tensor (m_inertia). Calculate the current inertia properties and global frame of this subsystem. This function is called every time the state of the vehicle system is advanced in time.

Implements chrono::vehicle::ChPart.


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