Specific implementation of kinematics using Levenberg-Marquardt method available at KDL. This version can be used with any robot. More...

#include <lma_kinematics_plugin.h>

Inheritance diagram for lma_kinematics_plugin::LMAKinematicsPlugin:

[legend]

Public Member Functions
const std::vector< std::string > &	getJointNames () const
	Return all the joint names in the order they are used internally. More...

const std::vector< std::string > &	getLinkNames () const
	Return all the link names in the order they are represented internally. More...

virtual bool	getPositionFK (const std::vector< std::string > &link_names, const std::vector< double > &joint_angles, std::vector< geometry_msgs::Pose > &poses) const

virtual bool	getPositionIK (const geometry_msgs::Pose &ik_pose, const std::vector< double > &ik_seed_state, std::vector< double > &solution, moveit_msgs::MoveItErrorCodes &error_code, const kinematics::KinematicsQueryOptions &options=kinematics::KinematicsQueryOptions()) const

virtual bool	initialize (const std::string &robot_description, const std::string &group_name, const std::string &base_name, const std::string &tip_name, double search_discretization)

	LMAKinematicsPlugin ()
	Default constructor. More...

virtual bool	searchPositionIK (const geometry_msgs::Pose &ik_pose, const std::vector< double > &ik_seed_state, double timeout, std::vector< double > &solution, moveit_msgs::MoveItErrorCodes &error_code, const kinematics::KinematicsQueryOptions &options=kinematics::KinematicsQueryOptions()) const

virtual bool	searchPositionIK (const geometry_msgs::Pose &ik_pose, const std::vector< double > &ik_seed_state, double timeout, const std::vector< double > &consistency_limits, std::vector< double > &solution, moveit_msgs::MoveItErrorCodes &error_code, const kinematics::KinematicsQueryOptions &options=kinematics::KinematicsQueryOptions()) const

virtual bool	searchPositionIK (const geometry_msgs::Pose &ik_pose, const std::vector< double > &ik_seed_state, double timeout, std::vector< double > &solution, const IKCallbackFn &solution_callback, moveit_msgs::MoveItErrorCodes &error_code, const kinematics::KinematicsQueryOptions &options=kinematics::KinematicsQueryOptions()) const

virtual bool	searchPositionIK (const geometry_msgs::Pose &ik_pose, const std::vector< double > &ik_seed_state, double timeout, const std::vector< double > &consistency_limits, std::vector< double > &solution, const IKCallbackFn &solution_callback, moveit_msgs::MoveItErrorCodes &error_code, const kinematics::KinematicsQueryOptions &options=kinematics::KinematicsQueryOptions()) const

Public Member Functions inherited from kinematics::KinematicsBase
virtual const std::string &	getBaseFrame () const

double	getDefaultTimeout () const

virtual const std::string &	getGroupName () const

virtual bool	getPositionIK (const std::vector< geometry_msgs::Pose > &ik_poses, const std::vector< double > &ik_seed_state, std::vector< std::vector< double > > &solutions, KinematicsResult &result, const kinematics::KinematicsQueryOptions &options) const

virtual void	getRedundantJoints (std::vector< unsigned int > &redundant_joint_indices) const

double	getSearchDiscretization (int joint_index=0) const

std::vector< DiscretizationMethod >	getSupportedDiscretizationMethods () const

virtual const std::string &	getTipFrame () const

virtual const std::vector< std::string > &	getTipFrames () const

virtual bool	initialize (const std::string &robot_description, const std::string &group_name, const std::string &base_frame, const std::vector< std::string > &tip_frames, double search_discretization)

	KinematicsBase ()

virtual bool	searchPositionIK (const std::vector< geometry_msgs::Pose > &ik_poses, const std::vector< double > &ik_seed_state, double timeout, const std::vector< double > &consistency_limits, std::vector< double > &solution, const IKCallbackFn &solution_callback, moveit_msgs::MoveItErrorCodes &error_code, const kinematics::KinematicsQueryOptions &options=kinematics::KinematicsQueryOptions(), const moveit::core::RobotState *context_state=NULL) const

void	setDefaultTimeout (double timeout)

bool	setRedundantJoints (const std::vector< std::string > &redundant_joint_names)

void	setSearchDiscretization (const std::map< int, double > &discretization)

void	setSearchDiscretization (double sd)

virtual void	setValues (const std::string &robot_description, const std::string &group_name, const std::string &base_frame, const std::string &tip_frame, double search_discretization)

virtual void	setValues (const std::string &robot_description, const std::string &group_name, const std::string &base_frame, const std::vector< std::string > &tip_frames, double search_discretization)

virtual bool	supportsGroup (const moveit::core::JointModelGroup jmg, std::string error_text_out=NULL) const

virtual	~KinematicsBase ()

Protected Member Functions
bool	searchPositionIK (const geometry_msgs::Pose &ik_pose, const std::vector< double > &ik_seed_state, double timeout, std::vector< double > &solution, const IKCallbackFn &solution_callback, moveit_msgs::MoveItErrorCodes &error_code, const std::vector< double > &consistency_limits, const kinematics::KinematicsQueryOptions &options=kinematics::KinematicsQueryOptions()) const
	Given a desired pose of the end-effector, search for the joint angles required to reach it. This particular method is intended for "searching" for a solutions by stepping through the redundancy (or other numerical routines). More...

virtual bool	setRedundantJoints (const std::vector< unsigned int > &redundant_joint_indices)

Protected Member Functions inherited from kinematics::KinematicsBase
bool	lookupParam (const std::string &param, T &val, const T &default_val) const

Private Member Functions
bool	checkConsistency (const KDL::JntArray &seed_state, const std::vector< double > &consistency_limit, const KDL::JntArray &solution) const
	Check whether the solution lies within the consistency limit of the seed state. More...

int	getJointIndex (const std::string &name) const

int	getKDLSegmentIndex (const std::string &name) const

void	getRandomConfiguration (KDL::JntArray &jnt_array, bool lock_redundancy) const

void	getRandomConfiguration (const KDL::JntArray &seed_state, const std::vector< double > &consistency_limits, KDL::JntArray &jnt_array, bool lock_redundancy) const
	Get a random configuration within joint limits close to the seed state. More...

bool	isRedundantJoint (unsigned int index) const

bool	timedOut (const ros::WallTime &start_time, double duration) const

Private Attributes
bool	active_

unsigned int	dimension_

double	epsilon_

moveit_msgs::KinematicSolverInfo	fk_chain_info_

moveit_msgs::KinematicSolverInfo	ik_chain_info_

KDL::JntArray	joint_max_

KDL::JntArray	joint_min_

robot_model::JointModelGroup *	joint_model_group_

KDL::Chain	kdl_chain_

double	max_solver_iterations_

std::vector< JointMimic >	mimic_joints_

int	num_possible_redundant_joints_

bool	position_ik_

random_numbers::RandomNumberGenerator	random_number_generator_

std::vector< unsigned int >	redundant_joints_map_index_

robot_model::RobotModelPtr	robot_model_

robot_state::RobotStatePtr	state_

robot_state::RobotStatePtr	state_2_

Additional Inherited Members
Public Types inherited from kinematics::KinematicsBase
typedef boost::function< void(const geometry_msgs::Pose &ik_pose, const std::vector< double > &ik_solution, moveit_msgs::MoveItErrorCodes &error_code)>	IKCallbackFn

Static Public Attributes inherited from kinematics::KinematicsBase
static const double	DEFAULT_SEARCH_DISCRETIZATION

static const double	DEFAULT_TIMEOUT

Protected Attributes inherited from kinematics::KinematicsBase
std::string	base_frame_

double	default_timeout_

std::string	group_name_

std::map< int, double >	redundant_joint_discretization_

std::vector< unsigned int >	redundant_joint_indices_

std::string	robot_description_

double	search_discretization_

std::vector< DiscretizationMethod >	supported_methods_

std::string	tip_frame_

std::vector< std::string >	tip_frames_

Detailed Description

Specific implementation of kinematics using Levenberg-Marquardt method available at KDL. This version can be used with any robot.

Definition at line 71 of file lma_kinematics_plugin.h.

Constructor & Destructor Documentation

lma_kinematics_plugin::LMAKinematicsPlugin::LMAKinematicsPlugin ( )

Default constructor.

Definition at line 54 of file lma_kinematics_plugin.cpp.

Member Function Documentation

bool lma_kinematics_plugin::LMAKinematicsPlugin::checkConsistency	(	const KDL::JntArray &	seed_state,
		const std::vector< double > &	consistency_limit,
		const KDL::JntArray &	solution
	)		const

private

Check whether the solution lies within the consistency limit of the seed state.

Parameters

seed_state	Seed state
redundancy	Index of the redundant joint within the chain
consistency_limit	The returned state for redundant joint should be in the range [seed_state(redundancy_limit)-consistency_limit,seed_state(redundancy_limit)+consistency_limit]
solution	solution configuration

Returns: true if check succeeds

Definition at line 117 of file lma_kinematics_plugin.cpp.

int lma_kinematics_plugin::LMAKinematicsPlugin::getJointIndex ( const std::string & name ) const

private

Definition at line 347 of file lma_kinematics_plugin.cpp.

const std::vector< std::string > & lma_kinematics_plugin::LMAKinematicsPlugin::getJointNames ( ) const

virtual

Return all the joint names in the order they are used internally.

Implements kinematics::KinematicsBase.

Definition at line 612 of file lma_kinematics_plugin.cpp.

int lma_kinematics_plugin::LMAKinematicsPlugin::getKDLSegmentIndex ( const std::string & name ) const

private

Definition at line 357 of file lma_kinematics_plugin.cpp.

const std::vector< std::string > & lma_kinematics_plugin::LMAKinematicsPlugin::getLinkNames ( ) const

virtual

Return all the link names in the order they are represented internally.

Implements kinematics::KinematicsBase.

Definition at line 617 of file lma_kinematics_plugin.cpp.

bool lma_kinematics_plugin::LMAKinematicsPlugin::getPositionFK	(	const std::vector< std::string > &	link_names,
		const std::vector< double > &	joint_angles,
		std::vector< geometry_msgs::Pose > &	poses
	)		const

virtual

Implements kinematics::KinematicsBase.

Definition at line 567 of file lma_kinematics_plugin.cpp.

bool lma_kinematics_plugin::LMAKinematicsPlugin::getPositionIK	(	const geometry_msgs::Pose &	ik_pose,
		const std::vector< double > &	ik_seed_state,
		std::vector< double > &	solution,
		moveit_msgs::MoveItErrorCodes &	error_code,
		const kinematics::KinematicsQueryOptions &	options = `kinematics::KinematicsQueryOptions()`
	)		const

virtual

Implements kinematics::KinematicsBase.

Definition at line 376 of file lma_kinematics_plugin.cpp.

void lma_kinematics_plugin::LMAKinematicsPlugin::getRandomConfiguration	(	KDL::JntArray &	jnt_array,
		bool	lock_redundancy
	)		const

private

Definition at line 58 of file lma_kinematics_plugin.cpp.

void lma_kinematics_plugin::LMAKinematicsPlugin::getRandomConfiguration	(	const KDL::JntArray &	seed_state,
		const std::vector< double > &	consistency_limits,
		KDL::JntArray &	jnt_array,
		bool	lock_redundancy
	)		const

private

Get a random configuration within joint limits close to the seed state.

Parameters

seed_state	Seed state
redundancy	Index of the redundant joint within the chain
consistency_limit	The returned state will contain a value for the redundant joint in the range [seed_state(redundancy_limit)-consistency_limit,seed_state(redundancy_limit)+consistency_limit]
jnt_array	Returned random configuration

Definition at line 80 of file lma_kinematics_plugin.cpp.

bool lma_kinematics_plugin::LMAKinematicsPlugin::initialize	(	const std::string &	robot_description,
		const std::string &	group_name,
		const std::string &	base_name,
		const std::string &	tip_name,
		double	search_discretization
	)

virtual

Implements kinematics::KinematicsBase.

Definition at line 127 of file lma_kinematics_plugin.cpp.

bool lma_kinematics_plugin::LMAKinematicsPlugin::isRedundantJoint ( unsigned int index ) const

private

Definition at line 72 of file lma_kinematics_plugin.cpp.

bool lma_kinematics_plugin::LMAKinematicsPlugin::searchPositionIK	(	const geometry_msgs::Pose &	ik_pose,
		const std::vector< double > &	ik_seed_state,
		double	timeout,
		std::vector< double > &	solution,
		moveit_msgs::MoveItErrorCodes &	error_code,
		const kinematics::KinematicsQueryOptions &	options = `kinematics::KinematicsQueryOptions()`
	)		const

virtual

Implements kinematics::KinematicsBase.

Definition at line 387 of file lma_kinematics_plugin.cpp.

bool lma_kinematics_plugin::LMAKinematicsPlugin::searchPositionIK	(	const geometry_msgs::Pose &	ik_pose,
		const std::vector< double > &	ik_seed_state,
		double	timeout,
		const std::vector< double > &	consistency_limits,
		std::vector< double > &	solution,
		moveit_msgs::MoveItErrorCodes &	error_code,
		const kinematics::KinematicsQueryOptions &	options = `kinematics::KinematicsQueryOptions()`
	)		const

virtual

Implements kinematics::KinematicsBase.

Definition at line 399 of file lma_kinematics_plugin.cpp.

bool lma_kinematics_plugin::LMAKinematicsPlugin::searchPositionIK	(	const geometry_msgs::Pose &	ik_pose,
		const std::vector< double > &	ik_seed_state,
		double	timeout,
		std::vector< double > &	solution,
		const IKCallbackFn &	solution_callback,
		moveit_msgs::MoveItErrorCodes &	error_code,
		const kinematics::KinematicsQueryOptions &	options = `kinematics::KinematicsQueryOptions()`
	)		const

virtual

Implements kinematics::KinematicsBase.

Definition at line 409 of file lma_kinematics_plugin.cpp.

bool lma_kinematics_plugin::LMAKinematicsPlugin::searchPositionIK	(	const geometry_msgs::Pose &	ik_pose,
		const std::vector< double > &	ik_seed_state,
		double	timeout,
		const std::vector< double > &	consistency_limits,
		std::vector< double > &	solution,
		const IKCallbackFn &	solution_callback,
		moveit_msgs::MoveItErrorCodes &	error_code,
		const kinematics::KinematicsQueryOptions &	options = `kinematics::KinematicsQueryOptions()`
	)		const

virtual

Implements kinematics::KinematicsBase.

Definition at line 420 of file lma_kinematics_plugin.cpp.

bool lma_kinematics_plugin::LMAKinematicsPlugin::searchPositionIK	(	const geometry_msgs::Pose &	ik_pose,
		const std::vector< double > &	ik_seed_state,
		double	timeout,
		std::vector< double > &	solution,
		const IKCallbackFn &	solution_callback,
		moveit_msgs::MoveItErrorCodes &	error_code,
		const std::vector< double > &	consistency_limits,
		const kinematics::KinematicsQueryOptions &	options = `kinematics::KinematicsQueryOptions()`
	)		const

protected

Given a desired pose of the end-effector, search for the joint angles required to reach it. This particular method is intended for "searching" for a solutions by stepping through the redundancy (or other numerical routines).

Parameters

ik_pose	the desired pose of the link
ik_seed_state	an initial guess solution for the inverse kinematics
timeout	The amount of time (in seconds) available to the solver
solution	the solution vector
solution_callback	A callback solution for the IK solution
error_code	an error code that encodes the reason for failure or success
check_consistency	Set to true if consistency check needs to be performed
redundancy	The index of the redundant joint
consistency_limit	The returned solutuion will contain a value for the redundant joint in the range [seed_state(redundancy_limit)-consistency_limit,seed_state(redundancy_limit)+consistency_limit]

Returns: True if a valid solution was found, false otherwise

Definition at line 430 of file lma_kinematics_plugin.cpp.

bool lma_kinematics_plugin::LMAKinematicsPlugin::setRedundantJoints ( const std::vector< unsigned int > & redundant_joint_indices )

protectedvirtual

Reimplemented from kinematics::KinematicsBase.

Definition at line 288 of file lma_kinematics_plugin.cpp.

bool lma_kinematics_plugin::LMAKinematicsPlugin::timedOut	(	const ros::WallTime &	start_time,
		double	duration
	)		const

private

Definition at line 371 of file lma_kinematics_plugin.cpp.

Member Data Documentation

bool lma_kinematics_plugin::LMAKinematicsPlugin::active_

private

Definition at line 179 of file lma_kinematics_plugin.h.

unsigned int lma_kinematics_plugin::LMAKinematicsPlugin::dimension_

private

Definition at line 187 of file lma_kinematics_plugin.h.

double lma_kinematics_plugin::LMAKinematicsPlugin::epsilon_

private

Definition at line 204 of file lma_kinematics_plugin.h.

moveit_msgs::KinematicSolverInfo lma_kinematics_plugin::LMAKinematicsPlugin::fk_chain_info_

private

Stores information for the inverse kinematics solver

Definition at line 183 of file lma_kinematics_plugin.h.

moveit_msgs::KinematicSolverInfo lma_kinematics_plugin::LMAKinematicsPlugin::ik_chain_info_

private

Internal variable that indicates whether solvers are configured and ready

Definition at line 181 of file lma_kinematics_plugin.h.

KDL::JntArray lma_kinematics_plugin::LMAKinematicsPlugin::joint_max_

private

Definition at line 189 of file lma_kinematics_plugin.h.

KDL::JntArray lma_kinematics_plugin::LMAKinematicsPlugin::joint_min_

private

Dimension of the group

Definition at line 189 of file lma_kinematics_plugin.h.

robot_model::JointModelGroup* lma_kinematics_plugin::LMAKinematicsPlugin::joint_model_group_

private

Definition at line 202 of file lma_kinematics_plugin.h.

KDL::Chain lma_kinematics_plugin::LMAKinematicsPlugin::kdl_chain_

private

Store information for the forward kinematics solver

Definition at line 185 of file lma_kinematics_plugin.h.

double lma_kinematics_plugin::LMAKinematicsPlugin::max_solver_iterations_

private

Definition at line 203 of file lma_kinematics_plugin.h.

std::vector<JointMimic> lma_kinematics_plugin::LMAKinematicsPlugin::mimic_joints_

private

Definition at line 205 of file lma_kinematics_plugin.h.

int lma_kinematics_plugin::LMAKinematicsPlugin::num_possible_redundant_joints_

private

Definition at line 197 of file lma_kinematics_plugin.h.

bool lma_kinematics_plugin::LMAKinematicsPlugin::position_ik_

private

Definition at line 201 of file lma_kinematics_plugin.h.

random_numbers::RandomNumberGenerator lma_kinematics_plugin::LMAKinematicsPlugin::random_number_generator_

mutableprivate

Joint limits

Definition at line 191 of file lma_kinematics_plugin.h.

std::vector<unsigned int> lma_kinematics_plugin::LMAKinematicsPlugin::redundant_joints_map_index_

private

Definition at line 198 of file lma_kinematics_plugin.h.

robot_model::RobotModelPtr lma_kinematics_plugin::LMAKinematicsPlugin::robot_model_

private

Definition at line 193 of file lma_kinematics_plugin.h.

robot_state::RobotStatePtr lma_kinematics_plugin::LMAKinematicsPlugin::state_

private

Definition at line 195 of file lma_kinematics_plugin.h.

robot_state::RobotStatePtr lma_kinematics_plugin::LMAKinematicsPlugin::state_2_

private

Definition at line 195 of file lma_kinematics_plugin.h.

The documentation for this class was generated from the following files:

Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation