The invention relates to a robot controller controlling a robot arm, the robot controller is configured to maintain the robot arm in a static posture when only gravity is acting on the robot arm and allow change in posture of the robot arm when an external force different from gravity is applied to the robot arm. The free-drive mode of operation is activatable by a user establishing a free-drive activation signal to the robot controller, which then is configured to: —monitor a value of at least one joint sensor parameter; —compare the value of the joint sensor parameter to a maintain free-drive joint sensor parameter threshold value; —maintain the robot arm in said free-drive mode of operation for a predetermined maintain free-drive period of time, and —leave the free-drive mode of operation if the value of the joint sensor parameter docs not exceed the maintain free-drive joint sensor parameter threshold value within the maintain free-drive period of time.

The invention relates to a robot controller controlling a robot arm, the robot controller is configured to maintain the robot arm in a static posture when only gravity is acting on the robot arm and allow change in posture of the robot arm 5 when an external force different from gravity is applied to the robot arm. The free-drive mode of operation is activatable by a user establishing a free-drive activation signal to the robot controller, which in free-drive mode of operation is configured within at a free-drive safety period to allow a part of said robot arm to be moved within a virtual three-dimensional geometric shape 10 surrounding the part of the robot arm.

The invention relates to a robot controller controlling a robot arm, the robot controller is configured to maintain the robot arm in a static posture when only gravity is acting on the robot arm and allow change in posture of the robot arm when an external force different from gravity is applied to the robot arm. The free-drive mode of operation is activatable by a user establishing a free-drive activation signal to the robot controller, which then is configured to initiate a free-drive mode activation sequence including the steps of: in a predetermined activation sequence period of time monitor a value of at least one joint sensor parameter, and compare this value to a free-drive activation joint sensor parameter threshold value. The robot controller is configured to switch to the free-drive mode of operation if the at least one value does not exceed the free-drive activation joint sensor parameter threshold value within the predetermined activation sequence period of time.

A robot manipulator including limbs moveable via bearings controlled by actuators; sensors to capture a bearing position and a bearing torque/bearing force; a first sensor to capture a force screw W; a housing downstream of the first sensor; a second sensor to capture a user force applied to the housing and/or a user torque; a computing unit to determine, using a dynamics model of the robot manipulator and based on particular bearing torque/bearing force, the force screw W, and the user force and/or the user torque, a first force and/or a first torque to shift the limbs and a second force and/or a second torque to apply to an external object via an effector, wherein the dynamics model includes at least gravitational forces and inertial forces based on the bearing position; and a storage unit to store the first and/or the second force, and/or the first and/or the second torque.

A device for robotic direct lead-through teaching includes a robot, a replacing member and a lead-through teaching member. The robot has an operation member coupled with the replacing member. The lead-through teaching member mounted replaceably at the replacing member has a force sensor. The force sensor has six-axis load information. A path teaching is executed manually upon the operation member of the robot so as to store coordinate information. In additional, a method for robotic direct lead-through teaching is also provided.

A sleeve worn on an arm allows detection of gestures by an array of sensors. Electromyography, inertial, and magnetic field sensors provide data that is processed to categorize gestures and translate the gestures into commands for robotic systems. Machine learning allows training of gestures to increase accuracy of detection for different users.

A robot system causing a robot to operate in response to a handling force, wherein a position of the robot can be adjusted with higher accuracy. In one aspect of the present disclosure, a robot system includes a robot having a handle, a force sensor configured to detect a handling force applied to the handle, and an inching motion execution section configured to execute an inching motion of causing the robot to move by a movement amount determined in response to the handling force detected by the force sensor.

Method and robot arm, where the motor torques of the joint motors of a robot arm are controlled based on a static motor torque indicating the motor torque needed to maintain the robot arm in a static posture, where the static motor torque is adjusted in response to a change in posture of the robot arm caused by an external force different from gravity applied to the robot arm. Further the motor torque of the joint motors is controlled based on an additional motor torque obtained based on a force-torque provided to the robot tool flange, where the force-torque is obtained by a force-torque sensor integrated in the tool flange of the robot arm.

The present invention relates to a robotic system having at least one robotic arm, a control unit for controlling the robotic arm and a robotic arm sensor system, wherein the controller and robotic arm sensor system are designed to respond to predetermined haptic gestures of the user acting on the robotic arm in such a way that the robotic system performs at least one predetermined operation associated with the haptic gesture.

A robot system causing a robot to operate in response to a handling force, wherein a position of the robot can be adjusted with higher accuracy. In one aspect of the present disclosure, a robot system includes a robot having a handle, a force sensor configured to detect a handling force applied to the handle, and an inching motion execution section configured to execute an inching motion of causing the robot to move by a movement amount determined in response to the handling force detected by the force sensor.