The disclosure relates to a system (1) and method for instructing a robot. The system (1) comprising an immersive haptic interface, such that operator interaction with a master robot arm (2) is reflected by a slave robot arm (3) arranged for interaction with a workpiece (4). The interaction of the slave robot arm (3) is reflected back to the master robot arm (2) as haptic feedback to the operator. The dynamic system is continually simulated forward and new commands are calculated for the master robot arm and the slave robot arm.

To realize torque control based on an estimated external force and to cope with more various situations. Provided is a medical support arm system including: a support arm that is a multilink structure having a plurality of links connected by a joint unit including an actuator, and configured to support a medical unit; and a control device including an external force estimation unit configured to estimate an external force acting on the joint unit on the basis of a drive characteristic of the actuator, and a joint control unit configured to control drive of the joint unit on the basis of an external torque estimated by the external force estimation unit.

A coupling device (16, 116, 216, 316) configured optimally to communicate between a first and a second admittance controller and actuator assembly, the first and the second admittance control and actuator assembly respectively having a first and a second admittance controller (12a, 12b) configured to drive a respective first and a second actuator and each of the first and the second actuator being respectively connected to a first body having a first mass and a second body having a second mass, wherein the coupling device (16, 116, 216, 316) comprises: an input port having a first input for receiving a first input force signal (f1) from the first admittance controller and actuator assembly (12a) and a second input for receiving a second input force signal (f2) from the second admittance controller and actuator assembly (12b), and a processor adapted to derive a first output force signal for output to the first admittance controller and actuator assembly based on a Lagrange multiplier dependent on a comparison of the first input force signal and the second input force signal.

A coupling device (16, 116, 216, 316) configured optimally to communicate between a first and a second admittance controller and actuator assembly, the first and the second admittance control and actuator assembly respectively having a first and a second admittance controller (12a, 12b) configured to drive a respective first and a second actuator and each of the first and the second actuator being respectively connected to a first body having a first mass and a second body having a second mass, wherein the coupling device (16, 116, 216, 316) comprises: an input port having a first input for receiving a first input force signal (f1) from the first admittance controller and actuator assembly (12a) and a second input for receiving a second input force signal (f2) from the second admittance controller and actuator assembly (12b), and a processor adapted to derive a first output force signal for output to the first admittance controller and actuator assembly based on a Lagrange multiplier dependent on a comparison of the first input force signal and the second input force signal.

To realize torque control based on an estimated external force and to cope with more various situations. Provided is a medical support arm system including: a support arm that is a multilink structure having a plurality of links connected by a joint unit including an actuator, and configured to support a medical unit; and a control device including an external force estimation unit configured to estimate an external force acting on the joint unit on the basis of a drive characteristic of the actuator, and a joint control unit configured to control drive of the joint unit on the basis of an external torque estimated by the external force estimation unit.

The disclosure relates to a system (1) and method for instructing a robot. The system (1) comprising an immersive haptic interface, such that operator interaction with a master robot arm (2) is reflected by a slave robot arm (3) arranged for interaction with a workpiece (4). The interaction of the slave robot arm (3) is reflected back to the master robot arm (2) as haptic feedback to the operator. The dynamic system is continually simulated forward and new commands are calculated for the master robot arm and the slave robot arm.

Provided is a medical support arm system including a support arm that is a multilink structure having a plurality of links connected by a joint unit including an actuator, and supports a medical unit. The medical support arm system further includes a control device including an external force estimation unit to estimate an external force acting on the joint unit on the basis of a drive characteristic of the actuator, and a joint control unit to control drive of the joint unit on the basis of an external torque estimated by the external force estimation unit.

A method for controlling a telerobotic robot using an input device which has a movable actuator includes repeatedly: commanding a target pose of a reference of the telerobotic robot, said reference being fixed to the robot, on the basis of a detected position of the actuator; and commanding a target force of the actuator; wherein a contact operating mode is carried out if a contact is ascertained between the reference fixed to the robot and an obstacle in a contact direction, and a non-contact operating mode is carried out after said contact is no longer ascertained and/or before said contact is ascertained. In the contact operating mode, the target force has a contact force component of a virtual spring, said contact force component simulating a contact between the reference fixed to the robot and an obstacle, and the contact force component is omitted in the non-contact operating mode.

A method for controlling a telerobot using an input device having a movable control includes detecting an adjustment of the control and an external load acting on the telerobot; determining a target adjustment of a telerobot reference fixed to the robot, based on the detected adjustment of the control; detecting an actual adjustment of the telerobot reference; and controlling drives of the telerobot based on a difference between the actual adjustment and target adjustment. A first operating mode is implemented if the detected load falls in a first range, and a second operating mode is implemented if the detected load falls in a second range. The drives of the telerobot are controlled in the first operating mode such that drive loads of the drives increase with an increase in a one- or multi-dimensional component of the difference in order to reduce the component; and, the drives of the telerobot are controlled in the second operating mode such that drive loads of the drives likewise increase with the same increase in this component of the difference in order to reduce the component, but less than in the first operating mode.

Systems and methods of providing a haptic barrier for an instrument include a computer-assisted device. The computer-assisted device includes a grip input control, a repositionable arm configured to support an instrument, and one or more processors. The one or more processors are configured to detect a position of the grip input control in a first direction of a degree of freedom having In a first region, a second region, and a third region between the first and second regions; in response to determining that the detected position is in the first region, operate the instrument according to a first mode; in response to determining that the detected position is in the third region, provide a haptic barrier to resist movement of the grip input control through the third region; and in response to determining that the detected position is in the second region, operate the instrument according to a second mode.