#include <visp3/robot/vpRobotCamera.h>

Inheritance diagram for vpRobotCamera:

Public Types
enum	vpRobotStateType { STATE_STOP, STATE_VELOCITY_CONTROL, STATE_POSITION_CONTROL, STATE_ACCELERATION_CONTROL }

enum	vpControlFrameType { REFERENCE_FRAME, ARTICULAR_FRAME, JOINT_STATE = ARTICULAR_FRAME, END_EFFECTOR_FRAME, CAMERA_FRAME, TOOL_FRAME = CAMERA_FRAME, MIXT_FRAME }

Public Member Functions
	vpRobotCamera ()

virtual	~vpRobotCamera ()

Inherited functionalities from vpRobotCamera
void	get_cVe (vpVelocityTwistMatrix &cVe) const

void	get_eJe (vpMatrix &eJe)

void	getPosition (vpHomogeneousMatrix &cMw) const

void	getPosition (const vpRobot::vpControlFrameType frame, vpColVector &q)

void	setPosition (const vpHomogeneousMatrix &cMw)

void	setVelocity (const vpRobot::vpControlFrameType frame, const vpColVector &v)

Inherited functionalities from vpRobotSimulator
double	getSamplingTime () const

virtual void	setSamplingTime (const double &delta_t)

Inherited functionalities from vpRobot
double	getMaxTranslationVelocity (void) const

double	getMaxRotationVelocity (void) const

vpColVector	getPosition (const vpRobot::vpControlFrameType frame)

virtual vpRobotStateType	getRobotState (void) const

void	setMaxRotationVelocity (const double maxVr)

void	setMaxTranslationVelocity (const double maxVt)

virtual vpRobotStateType	setRobotState (const vpRobot::vpRobotStateType newState)

void	setVerbose (bool verbose)

Static Public Member Functions
Static Public Member Functions inherited from vpRobot
static vpColVector	saturateVelocities (const vpColVector &v_in, const vpColVector &v_max, bool verbose=false)

Protected Member Functions
Protected Member Functions Inherited from vpRobot
vpControlFrameType	setRobotFrame (vpRobot::vpControlFrameType newFrame)

vpControlFrameType	getRobotFrame (void) const

Protected Attributes
vpHomogeneousMatrix	cMw_

double	delta_t_

double	maxTranslationVelocity

double	maxRotationVelocity

int	nDof

vpMatrix	eJe

int	eJeAvailable

vpMatrix	fJe

int	fJeAvailable

int	areJointLimitsAvailable

double *	qmin

double *	qmax

bool	verbose_

Static Protected Attributes
static const double	maxTranslationVelocityDefault = 0.2

static const double	maxRotationVelocityDefault = 0.7

Detailed Description

Class that defines the simplest robot: a free flying camera. We recommend to use vpSimulatorCamera instead.

Deprecated:: This class is deprecated since ViSP 3.0.0.

This free flying camera has 6 dof; 3 in translation and 3 in rotation. It evolves as a gentry robot with respect to a world frame. This class is similar to vpSimulatorCamera class except that here the position of the robot is provided as the transformation from camera frame to world frame; cMw. Since the position of the camera frame evolves, this representation is less intuitive than the one implemented in vpSimulatorCamera where the transformation from world to camera frame is considered; wMc.

For this particular simulated robot, the end-effector and camera frame are confused. That means that the cMe transformation is equal to identity.

The robot jacobian expressed in the end-effector frame ${^e}{\bf J}_e$ is also set to identity (see get_eJe()).

The following code shows how to control this robot in position and velocity.

#include <visp3/robot/vpRobotCamera.h>
int main()
{
  vpHomogeneousMatrix cMw;
  vpRobotCamera robot;
  robot.getPosition(cMw); // Position of the camera in the world frame
  std::cout << "Default position of the camera in the world frame cMw:\n" << cMw << std::endl;
  cMw[2][3] = 1.; // World frame is 1 meter along z axis in front of the camera frame
  robot.setPosition(cMw); // Set the new position of the camera wrt the world frame
  std::cout << "New position of the camera wrt the world frame cMw:\n" << cMw << std::endl;
  robot.setSamplingTime(0.100); // Modify the default sampling time to 0.1 second
  robot.setMaxTranslationVelocity(1.); // vx, vy and vz max set to 1 m/s
  robot.setMaxRotationVelocity(vpMath::rad(90)); // wx, wy and wz max set to 90 deg/s
  vpColVector v(6);
  v = 0;
  v[2] = 1.; // set v_z to 1 m/s
  robot.setVelocity(vpRobot::CAMERA_FRAME, v);
  // The robot has moved from 0.1 meters along the z axis
  robot.getPosition(cMw); // Position of the camera wrt the world frame
  std::cout << "New position of the camera cMw:\n" << cMw << std::endl;
}

Definition at line 110 of file vpRobotCamera.h.

Member Enumeration Documentation

enum vpRobot::vpControlFrameType

inherited

Robot control frames.

Enumerator
REFERENCE_FRAME	Corresponds to a fixed reference frame attached to the robot structure.
ARTICULAR_FRAME	Corresponds to the joint state. This value is deprecated. You should rather use vpRobot::JOINT_STATE.
JOINT_STATE	Corresponds to the joint state.
END_EFFECTOR_FRAME	Corresponds to robot end-effector frame.
CAMERA_FRAME	Corresponds to a frame attached to the camera mounted on the robot end-effector.
TOOL_FRAME	Corresponds to a frame attached to the tool (camera, gripper...) mounted on the robot end-effector. This value is equal to vpRobot::CAMERA_FRAME.
MIXT_FRAME	Corresponds to a "virtual" frame where translations are expressed in the reference frame, and rotations in the camera frame.

Definition at line 75 of file vpRobot.h.

enum vpRobot::vpRobotStateType

inherited

Robot control states.

Enumerator
STATE_STOP	Stops robot motion especially in velocity and acceleration control.
STATE_VELOCITY_CONTROL	Initialize the velocity controller.
STATE_POSITION_CONTROL	Initialize the position controller.
STATE_ACCELERATION_CONTROL	Initialize the acceleration controller.

Definition at line 64 of file vpRobot.h.

Constructor & Destructor Documentation

vpRobotCamera::vpRobotCamera ( )

Constructor.

Initialise the robot by a call to init().

Sampling time is set to 40 ms. To change it you should call setSamplingTime().

Robot jacobian expressed in the end-effector frame ${^e}{\bf J}_e$ is set to identity (see get_eJe()).

vpRobotCamera robot;
robot.setSamplingTime(0.020); // Set the sampling time to 20 ms.

Definition at line 72 of file vpRobotCamera.cpp.

References vpRobot::areJointLimitsAvailable, vpRobot::eJe, vpRobot::eJeAvailable, vpMatrix::eye(), vpRobot::fJeAvailable, vpRobot::nDof, vpRobot::qmax, vpRobot::qmin, vpMath::rad(), vpRobot::setMaxRotationVelocity(), and vpRobot::setMaxTranslationVelocity().

vpRobotCamera::~vpRobotCamera ( )

virtual

Destructor.

Definition at line 99 of file vpRobotCamera.cpp.

Member Function Documentation

void vpRobotCamera::get_cVe ( vpVelocityTwistMatrix & cVe ) const

Get the twist transformation from camera frame to end-effector frame. This transformation allows to compute a velocity expressed in the end-effector frame into the camera frame.

Parameters

cVe	: Twist transformation. Here this transformation is equal to identity since camera frame and end-effector frame are at the same location.

Definition at line 111 of file vpRobotCamera.cpp.

void vpRobotCamera::get_eJe ( vpMatrix & eJe_ )

virtual

Get the robot jacobian expressed in the end-effector frame. For that simple robot the Jacobian is the identity.

Parameters

eJe_	: A 6 by 6 matrix representing the robot jacobian ${^e}{\bf J}_e$ expressed in the end-effector frame.

Implements vpRobot.

Definition at line 124 of file vpRobotCamera.cpp.

References vpRobot::eJe.

double vpRobot::getMaxRotationVelocity ( void ) const

inherited

Get the maximal rotation velocity that can be sent to the robot during a velocity control.

Returns: Maximum rotation velocity expressed in rad/s.

Definition at line 273 of file vpRobot.cpp.

References vpRobot::maxRotationVelocity.

Referenced by vpSimulatorAfma6::computeArticularVelocity(), vpSimulatorViper850::computeArticularVelocity(), vpSimulatorAfma6::findHighestPositioningSpeed(), vpSimulatorViper850::findHighestPositioningSpeed(), vpSimulatorAfma6::setPosition(), vpSimulatorCamera::setVelocity(), setVelocity(), vpSimulatorPioneer::setVelocity(), vpRobotPioneer::setVelocity(), vpSimulatorPioneerPan::setVelocity(), vpSimulatorAfma6::setVelocity(), vpRobotAfma4::setVelocity(), vpSimulatorViper850::setVelocity(), vpRobotAfma6::setVelocity(), vpRobotFranka::setVelocity(), vpRobotViper650::setVelocity(), and vpRobotViper850::setVelocity().

double vpRobot::getMaxTranslationVelocity ( void ) const

inherited

Get the maximal translation velocity that can be sent to the robot during a velocity control.

Returns: Maximum translational velocity expressed in m/s.

Definition at line 251 of file vpRobot.cpp.

References vpRobot::maxTranslationVelocity.

Referenced by vpSimulatorAfma6::setPosition(), vpSimulatorCamera::setVelocity(), setVelocity(), vpSimulatorPioneer::setVelocity(), vpRobotPioneer::setVelocity(), vpSimulatorPioneerPan::setVelocity(), vpSimulatorAfma6::setVelocity(), vpRobotAfma4::setVelocity(), vpSimulatorViper850::setVelocity(), vpRobotAfma6::setVelocity(), vpRobotFranka::setVelocity(), vpRobotViper650::setVelocity(), and vpRobotViper850::setVelocity().

void vpRobotCamera::getPosition ( vpHomogeneousMatrix & cMw ) const

Get the robot position as the transformation from camera frame to world frame.

Definition at line 189 of file vpRobotCamera.cpp.

References cMw_.

void vpRobotCamera::getPosition	(	const vpRobot::vpControlFrameType	frame,
		vpColVector &	q
	)

virtual

Get the robot position (frame has to be specified).

Implements vpRobot.

Definition at line 212 of file vpRobotCamera.cpp.

References vpRobot::ARTICULAR_FRAME, vpRxyzVector::buildFrom(), vpRobot::CAMERA_FRAME, cMw_, vpRobot::END_EFFECTOR_FRAME, vpHomogeneousMatrix::extract(), vpRobot::MIXT_FRAME, vpRobot::REFERENCE_FRAME, and vpColVector::resize().

vpColVector vpRobot::getPosition ( const vpRobot::vpControlFrameType frame )

inherited

Return the current robot position in the specified frame.

Definition at line 216 of file vpRobot.cpp.

References vpRobot::getPosition().

vpControlFrameType vpRobot::getRobotFrame ( void ) const

inlineprotectedinherited

Definition at line 172 of file vpRobot.h.

Referenced by vpSimulatorAfma6::computeArticularVelocity(), and vpSimulatorViper850::computeArticularVelocity().

virtual vpRobotStateType vpRobot::getRobotState ( void ) const

inlinevirtualinherited

Definition at line 144 of file vpRobot.h.

Referenced by vpRobotBiclops::getPosition(), vpRobotBiclops::getVelocity(), vpRobotPtu46::setPosition(), vpSimulatorCamera::setPosition(), setPosition(), vpRobotBiclops::setPosition(), vpSimulatorAfma6::setPosition(), vpRobotAfma4::setPosition(), vpSimulatorViper850::setPosition(), vpRobotAfma6::setPosition(), vpRobotFranka::setPosition(), vpRobotViper650::setPosition(), vpRobotViper850::setPosition(), vpRobotPtu46::setRobotState(), vpRobotBiclops::setRobotState(), vpSimulatorAfma6::setRobotState(), vpRobotAfma4::setRobotState(), vpSimulatorViper850::setRobotState(), vpRobotAfma6::setRobotState(), vpRobotFranka::setRobotState(), vpRobotViper650::setRobotState(), vpRobotViper850::setRobotState(), vpRobotPtu46::setVelocity(), vpSimulatorCamera::setVelocity(), setVelocity(), vpSimulatorPioneer::setVelocity(), vpSimulatorPioneerPan::setVelocity(), vpRobotBiclops::setVelocity(), vpSimulatorAfma6::setVelocity(), vpSimulatorViper850::setVelocity(), vpRobotAfma4::setVelocity(), vpRobotAfma6::setVelocity(), vpRobotFranka::setVelocity(), vpRobotViper650::setVelocity(), vpRobotViper850::setVelocity(), vpSimulatorAfma6::stopMotion(), vpSimulatorViper850::stopMotion(), vpRobotFranka::stopMotion(), vpRobotViper650::stopMotion(), and vpRobotViper850::stopMotion().

double vpRobotSimulator::getSamplingTime ( ) const

inlineinherited

Return the sampling time.

Returns: Sampling time in second used to compute the robot displacement from the velocity applied to the robot during this time.

Examples:: tutorial-ibvs-4pts-display.cpp, tutorial-ibvs-4pts-image-tracking.cpp, tutorial-ibvs-4pts-ogre-tracking.cpp, tutorial-ibvs-4pts-ogre.cpp, tutorial-ibvs-4pts-plotter-continuous-gain-adaptive.cpp, tutorial-ibvs-4pts-wireframe-camera.cpp, tutorial-ibvs-4pts-wireframe-robot-afma6.cpp, tutorial-ibvs-4pts-wireframe-robot-viper.cpp, tutorial-simu-pioneer-continuous-gain-adaptive.cpp, and tutorial-simu-pioneer-continuous-gain-constant.cpp.

Definition at line 82 of file vpRobotSimulator.h.

Referenced by vpVirtualGrabber::acquire(), vpSimulatorAfma6::updateArticularPosition(), and vpSimulatorViper850::updateArticularPosition().

vpColVector vpRobot::saturateVelocities	(	const vpColVector &	v_in,
		const vpColVector &	v_max,
		bool	verbose = `false`
	)

staticinherited

Saturate velocities.

Parameters

v_in	: Vector of input velocities to saturate. Translation velocities should be expressed in m/s while rotation velocities in rad/s.
v_max	: Vector of maximal allowed velocities. Maximal translation velocities should be expressed in m/s while maximal rotation velocities in rad/s.
verbose	: Print a message indicating which axis causes the saturation.

Returns: Saturated velocities.

Exceptions

vpRobotException::dimensionError : If the input vectors have different dimensions.

The code below shows how to use this static method in order to saturate a velocity skew vector.

#include <iostream>
#include <visp3/robot/vpRobot.h>
int main()
{
  // Set a velocity skew vector
  vpColVector v(6);
  v[0] = 0.1;               // vx in m/s
  v[1] = 0.2;               // vy
  v[2] = 0.3;               // vz
  v[3] = vpMath::rad(10);   // wx in rad/s
  v[4] = vpMath::rad(-10);  // wy
  v[5] = vpMath::rad(20);   // wz
  // Set the maximal allowed velocities
  vpColVector v_max(6);
  for (int i=0; i<3; i++)
    v_max[i] = 0.3;             // in translation (m/s)
  for (int i=3; i<6; i++)
    v_max[i] = vpMath::rad(10); // in rotation (rad/s)
  // Compute the saturated velocity skew vector
  vpColVector v_sat = vpRobot::saturateVelocities(v, v_max, true);
  std::cout << "v    : " << v.t() << std::endl;
  std::cout << "v max: " << v_max.t() << std::endl;
  std::cout << "v sat: " << v_sat.t() << std::endl;
  return 0;
}

Definition at line 163 of file vpRobot.cpp.

References vpException::dimensionError, and vpArray2D< Type >::size().

Referenced by vpSimulatorCamera::setVelocity(), setVelocity(), vpSimulatorPioneer::setVelocity(), vpRobotPioneer::setVelocity(), vpSimulatorPioneerPan::setVelocity(), vpRobotAfma4::setVelocity(), vpRobotAfma6::setVelocity(), vpRobotFranka::setVelocity(), vpRobotViper650::setVelocity(), and vpRobotViper850::setVelocity().

void vpRobot::setMaxRotationVelocity ( const double w_max )

inherited

Set the maximal rotation velocity that can be sent to the robot during a velocity control.

Parameters

w_max : Maximum rotational velocity expressed in rad/s.

Examples:: servoMomentPoints.cpp, servoSimu4Points.cpp, servoSimuSphere.cpp, testFeatureSegment.cpp, and testFrankaJointVelocityLimits.cpp.

Definition at line 260 of file vpRobot.cpp.

References vpRobot::maxRotationVelocity.

Referenced by vpRobotViper650::getControlMode(), vpRobotViper850::getControlMode(), vpRobotViper650::setMaxRotationVelocity(), vpRobotViper850::setMaxRotationVelocity(), vpSimulatorAfma6::setPosition(), vpRobotCamera(), and vpSimulatorCamera::vpSimulatorCamera().

void vpRobot::setMaxTranslationVelocity ( const double v_max )

inherited

Set the maximal translation velocity that can be sent to the robot during a velocity control.

Parameters

v_max : Maximum translation velocity expressed in m/s.

Examples:: servoMomentPoints.cpp, servoSimu4Points.cpp, servoSimuSphere.cpp, simulateCircle2DCamVelocity.cpp, simulateFourPoints2DCartesianCamVelocity.cpp, simulateFourPoints2DPolarCamVelocity.cpp, and testFeatureSegment.cpp.

Definition at line 239 of file vpRobot.cpp.

References vpRobot::maxTranslationVelocity.

Referenced by vpSimulatorAfma6::setPosition(), vpRobotCamera(), and vpSimulatorCamera::vpSimulatorCamera().

void vpRobotCamera::setPosition ( const vpHomogeneousMatrix & cMw )

Set the robot position as the transformation from camera frame to world frame.

Definition at line 250 of file vpRobotCamera.cpp.

References cMw_, vpRobot::getRobotState(), vpRobot::setRobotState(), and vpRobot::STATE_POSITION_CONTROL.

vpRobot::vpControlFrameType vpRobot::setRobotFrame ( vpRobot::vpControlFrameType newFrame )

protectedinherited

Definition at line 207 of file vpRobot.cpp.

Referenced by vpSimulatorAfma6::init(), vpSimulatorViper850::init(), vpSimulatorCamera::setVelocity(), vpSimulatorPioneer::setVelocity(), vpSimulatorPioneerPan::setVelocity(), vpSimulatorAfma6::setVelocity(), and vpSimulatorViper850::setVelocity().

vpRobot::vpRobotStateType vpRobot::setRobotState ( const vpRobot::vpRobotStateType newState )

virtualinherited

Reimplemented in vpRobotViper850, vpRobotViper650, vpRobotFranka, vpRobotAfma6, vpSimulatorViper850, vpRobotAfma4, vpSimulatorAfma6, vpRobotBiclops, and vpRobotPtu46.

Examples:: moveBiclops.cpp, photometricVisualServoing.cpp, servoBiclopsPoint2DArtVelocity.cpp, servoSimuAfma6FourPoints2DCamVelocity.cpp, servoSimuViper850FourPoints2DCamVelocity.cpp, tutorial-ibvs-4pts-wireframe-robot-afma6.cpp, and tutorial-ibvs-4pts-wireframe-robot-viper.cpp.

Definition at line 201 of file vpRobot.cpp.

Referenced by vpRobotViper650::getControlMode(), vpRobotViper850::getControlMode(), vpRobotFranka::getHandler(), vpSimulatorCamera::setPosition(), setPosition(), vpSimulatorAfma6::setPositioningVelocity(), vpSimulatorViper850::setPositioningVelocity(), vpRobotPtu46::setRobotState(), vpRobotBiclops::setRobotState(), vpSimulatorAfma6::setRobotState(), vpRobotAfma4::setRobotState(), vpSimulatorViper850::setRobotState(), vpRobotAfma6::setRobotState(), vpRobotFranka::setRobotState(), vpRobotViper650::setRobotState(), vpRobotViper850::setRobotState(), vpSimulatorCamera::setVelocity(), setVelocity(), vpSimulatorPioneer::setVelocity(), vpSimulatorPioneerPan::setVelocity(), vpSimulatorAfma6::stopMotion(), and vpSimulatorViper850::stopMotion().

virtual void vpRobotSimulator::setSamplingTime ( const double & delta_t )

inlinevirtualinherited

Set the sampling time.

Parameters

delta_t : Sampling time in second used to compute the robot displacement from the velocity applied to the robot during this time.

Reimplemented in vpRobotWireFrameSimulator.

Examples:: manServo4PointsDisplay.cpp, manServoMomentsSimple.cpp, manSimu4Dots.cpp, manSimu4Points.cpp, photometricVisualServoing.cpp, servoMomentImage.cpp, servoSimu4Points.cpp, servoSimuCylinder.cpp, servoSimuSphere.cpp, simulateCircle2DCamVelocity.cpp, simulateFourPoints2DCartesianCamVelocity.cpp, simulateFourPoints2DPolarCamVelocity.cpp, testFeatureSegment.cpp, tutorial-ibvs-4pts-display.cpp, tutorial-ibvs-4pts-image-tracking.cpp, tutorial-ibvs-4pts-ogre-tracking.cpp, tutorial-ibvs-4pts-ogre.cpp, tutorial-ibvs-4pts-plotter-continuous-gain-adaptive.cpp, tutorial-ibvs-4pts-plotter-gain-adaptive.cpp, tutorial-ibvs-4pts-plotter.cpp, tutorial-ibvs-4pts-wireframe-camera.cpp, tutorial-ibvs-4pts.cpp, tutorial-simu-pioneer-continuous-gain-adaptive.cpp, tutorial-simu-pioneer-continuous-gain-constant.cpp, tutorial-simu-pioneer-pan.cpp, and tutorial-simu-pioneer.cpp.

Definition at line 91 of file vpRobotSimulator.h.

Referenced by vpVirtualGrabber::acquire().

void vpRobotCamera::setVelocity	(	const vpRobot::vpControlFrameType	frame,
		const vpColVector &	v
	)

virtual

Send to the controller a velocity.

Parameters

frame	: Control frame type. Only articular (vpRobot::ARTICULAR_FRAME) and camera frame (vpRobot::CAMERA_FRAME) are implemented.
v	: Velocity twist to apply to the robot.

In the camera frame, this velocity is represented by a twist vector of dimension 6 ${\bf v} = [v_x v_y v_z w_x w_y w_z]^t$ where are the translation velocities in m/s and the rotation velocities in rad/s applied in the camera frame.
In articular, the behavior is the same as in camera frame.

Internally, the exponential map (vpExponentialMap) is used to update the camera position from its velocity after applying the velocity during a sampling time. This sampling time can be set using setSamplingTime().