Robot¶

class Robot¶

Bases: pybind11_object

Class that defines a generic virtual robot.

group_robot_real_arm group_robot_real_ptu group_robot_real_unicycle group_robot_real_template

Methods

`__init__`
`getMaxRotationVelocity`	Get the maximal rotation velocity that can be sent to the robot during a velocity control.
`getMaxTranslationVelocity`	Get the maximal translation velocity that can be sent to the robot during a velocity control.
`getNDof`	Return robot degrees of freedom number.
`getPosition`
`getRobotState`
`saturateVelocities`	Saturate velocities.
`setMaxRotationVelocity`	Set the maximal rotation velocity that can be sent to the robot during a velocity control.
`setMaxTranslationVelocity`	Set the maximal translation velocity that can be sent to the robot during a velocity control.
`setRobotState`
`setVerbose`

Inherited Methods

Operators

`__doc__`
`__init__`
`__module__`

Attributes

`ARTICULAR_FRAME`
`CAMERA_FRAME`
`END_EFFECTOR_FRAME`
`JOINT_STATE`
`MIXT_FRAME`
`REFERENCE_FRAME`
`STATE_ACCELERATION_CONTROL`
`STATE_FORCE_TORQUE_CONTROL`
`STATE_POSITION_CONTROL`
`STATE_STOP`
`STATE_VELOCITY_CONTROL`
`TOOL_FRAME`
`__annotations__`

class ControlFrameType(self, value: int)¶

Bases: pybind11_object

Robot control frames.

Values:

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.

__and__(self, other: object) → object¶

__eq__(self, other: object) → bool¶

__ge__(self, other: object) → bool¶

__getstate__(self) → int¶

__gt__(self, other: object) → bool¶

__hash__(self) → int¶

__index__(self) → int¶

__init__(self, value: int)¶

__int__(self) → int¶

__invert__(self) → object¶

__le__(self, other: object) → bool¶

__lt__(self, other: object) → bool¶

__ne__(self, other: object) → bool¶

__or__(self, other: object) → object¶

__rand__(self, other: object) → object¶

__ror__(self, other: object) → object¶

__rxor__(self, other: object) → object¶

__setstate__(self, state: int) → None¶

__xor__(self, other: object) → object¶

property name : str¶

class RobotStateType(self, value: int)¶

Bases: pybind11_object

Robot control frames.

Values:

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.

__and__(self, other: object) → object¶

__eq__(self, other: object) → bool¶

__ge__(self, other: object) → bool¶

__getstate__(self) → int¶

__gt__(self, other: object) → bool¶

__hash__(self) → int¶

__index__(self) → int¶

__init__(self, value: int)¶

__int__(self) → int¶

__invert__(self) → object¶

__le__(self, other: object) → bool¶

__lt__(self, other: object) → bool¶

__ne__(self, other: object) → bool¶

__or__(self, other: object) → object¶

__rand__(self, other: object) → object¶

__ror__(self, other: object) → object¶

__rxor__(self, other: object) → object¶

__setstate__(self, state: int) → None¶

__xor__(self, other: object) → object¶

property name : str¶

__init__(*args, **kwargs)¶

getMaxRotationVelocity(self) → float¶

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

Returns:: Maximum rotation velocity expressed in rad/s.

getMaxTranslationVelocity(self) → float¶

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

Returns:: Maximum translational velocity expressed in m/s.

getNDof(self) → int¶: Return robot degrees of freedom number.

getPosition(self, frame: visp._visp.robot.Robot.ControlFrameType) → visp._visp.core.ColVector¶

getRobotState(self) → visp._visp.robot.Robot.RobotStateType¶

static saturateVelocities(v_in: visp._visp.core.ColVector, v_max: visp._visp.core.ColVector, verbose: bool = false) → visp._visp.core.ColVector¶

Saturate velocities.

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>

#ifdef ENABLE_VISP_NAMESPACE
using namespace VISP_NAMESPACE_NAME;
#endif

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;
}

Parameters:

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

Returns:

Saturated velocities.

setMaxRotationVelocity(self, maxVr: float) → None¶: Set the maximal rotation velocity that can be sent to the robot during a velocity control.

setMaxTranslationVelocity(self, maxVt: float) → None¶: Set the maximal translation velocity that can be sent to the robot during a velocity control.

setRobotState(self, newState: visp._visp.robot.Robot.RobotStateType) → visp._visp.robot.Robot.RobotStateType¶

setVerbose(self, verbose: bool) → None¶