Abstract: A robotic arm includes multiple joints and multiple links. The links are connected successively by the joints. At least two of the joints may each comprise a sensor configured to measure force and torque information in multiple DOF of its respective joint. In certain implementations, the sensor may be located between an input part of the respective one of the at least two joints and an output part of the respective one of the at least two joints.

Abstract: The present disclosure relates to a kinematics calibration method for a robot with multiple degrees of freedom. The robot includes a base, an end effector, and a plurality of links connected by joints. The method includes locking part of the multiple degrees of freedom by limiting the base and the end effector impose a limitation of degree of freedom; moving the robot to perform a first movement and accordingly obtaining a first set of data associated with joint angles and a first actual motion of the end effector; calculating a first theoretical motion of the end effector based on the first set of data and initial kinematics parameters; and updating the initial kinematics parameters of the robot to obtain a first set of updated kinematics parameters based on the first theoretical motion and the first actual motion.

Abstract: An actuator of a robotic system and a robot are provided. The actuator may include a center shaft, an outer shell connected to the center shaft, an input flange, and an output flange coaxially installed on the center shaft, a torque sensor and a motor assembly. The input flange and the output flange are radially fixed with at least one of the outer shell and the center shaft through a plurality of bearings. The torque sensor is connected between the input flange and the output flange, and configured to measure a torque transmitted by the input flange and the output flange. The motor assembly is coupled to the input flange. Disturbances transmitted from either side of the torque sensor may be isolated from the torque sensor. Therefore, the reliability of the readings of the torque sensor may be improved.

Abstract: The present disclosure relates to a gripper and a robot. The gripper according to the present disclosure includes at least three guiding rails arranged head to tail in sequence, at least three gripping fingers respectively disposed on the at least three guiding rails and a driving mechanism. A first end of each of the gripping fingers is slidably connected to the corresponding guiding rail and a second end of each of the gripping fingers is for contacting the object to be gripped. The driving mechanism drives each of the gripping fingers to move along the corresponding guiding rail, so that the second end of each of the gripping fingers moves toward or away from a gripping center of the gripper.

Abstract: An axial force sensor assembly for detecting an axial force is provided, which includes a mounting bracket and a first sensor assembled on the mounting bracket. The mounting bracket includes an inner mounting portion, an outer mounting portion and a multi-layer connecting member connected between the inner mounting portion and the outer mounting portion. The multi-layer connecting structure is more compliant in a direction of the axial force to be detected than in other loading directions. The first sensor is configured to detect a relative displacement between the inner mounting portion and the outer mounting portion in the direction of the axial force to be detected.

Abstract: A sensing assembly includes a magnet assembly configured to be coupled to a first component and a pair of hall-effect sensors configured to be coupled to a second component. The pair of hall-effect sensors are configured to generate substantially identical signal changes in response to a first relative motion in a first direction between the magnet assembly and the pair of hall-effect sensors, and to generate substantially equal but opposite signal changes in response to a second relative motion in a second direction between the magnet assembly and the pair of sensors. The first direction is perpendicular to the second direction.

Abstract: A gripper includes a lead screw, a first gripping jaw and a second gripping jaw. The lead screw includes a spiral portion having at least one first spiral track and at least one second spiral track with opposite helical directions. A portion of a coverage of the first spiral track overlaps a portion of a coverage of the second spiral track along a length of the spiral portion. The first gripping jaw has a first pin extending into the first spiral track, and the second gripping jaw has a second pin extending into the second spiral track. When the spiral portion rotates, the first spiral track drives the first pin to allow a first linear movement of the first gripping jaw, and the second spiral track drives the second pin to allow a second linear movement of the second gripping jaw opposite to the first linear movement.

Abstract: A multi-degree of freedom (DOF) force and torque sensor is provided. The multi-DOF force and torque sensor includes a first rigid plate, a second rigid plate, multiple elastic elements connected between the first and second rigid plates, and multiple signal pairs connected between the first and second rigid plates. The signal pairs are used for detecting relative displacements of the first and second rigid plates in multiple directions.

Abstract: The present disclosure relates to a brake mechanism, a joint actuator and a robot. The brake mechanism includes a friction member configured to be fixed to a rotor of the motor, a brake member abutting against one side of the friction member, a pushing member abutting against the other side of the friction member and configured to provide an adjustable pushing force to the brake member, a locking mechanism configured to prevent the brake member from rotating according to a brake command.

Abstract: A method for assembling an operating member and an adapting member by a robot is provided. According to the method, the operating member is moved to the adapting member in an assembly direction until the operating member reaches the adapting member. A moving mode for adjusting the operating member is determined, in which the moving mode includes one or both of a moving-in-plane mode and a posture-adjusting mode. The operating member is moved in the determined moving mode and applied a force continuously in the assembly direction during movement. It is determined whether a preset condition for a completion of the assembling of the operating member and the adapting member is satisfied. And the movement of the operating member in the determined moving mode is stopped or the applied force is stopped when it is determined that the preset condition is satisfied.

Abstract: The present application provides a brake apparatus for a rotating component, a robot joint and a robot including the same. The brake apparatus includes: a locking component including a locking end provided with a first magnet; and a brake component including a mounting portion connected to the rotating component and a plurality of brake ends provided on the mounting portion along a circumferential direction of the mounting portion. Each of the plurality of brake ends is provided with a second magnet. A side of the first magnet facing the brake component is configured to have same polarity as sides of the second magnets facing the locking component. A distance from the first magnet to a rotary axis of the rotating component is substantially the same as distances from the second magnets to the rotary axis of the rotating component.

Abstract: Methods and systems for improved control of robotic arms are presented. In one embodiment, a method is presented that includes predefining a plurality of motion primitives, which may include one or more preconditions and effects. A target state for a plurality of workpieces may be determined as well as an initial state of the plurality of workpieces. A sequence of operations may be generated based on the preconditions and/or effects of the motion primitives, as well as the target state and the initial state. Executing the sequence of operations may be capable of changing the plurality of workpieces from the initial state to the target state.

Abstract: A method, system, and non-transitory, computer-readable medium are provided for estimating a direction of gravity with respect to a robot. The method includes rotating a first joint. A first torque information of the first joint is recorded during rotation of the first joint. A second joint is then rotated. A second torque information of the second joint is recorded during rotation of the second joint. The direction of gravity is then estimated with respect to the robot based on the first torque information and the second torque information. The method provides an efficient way for determining the direction of gravity with respect to the robot.

Abstract: The present disclosure provides a gripper of a robot and a robot including the same. The gripper may include a case, a plurality of fingers rotatably connected to the case, and a plurality of connecting rods. A first end of each of the connecting rods may be connected to a respective one of the fingers. The gripper may also include a driving assembly connected to a second end of each of the connecting rods, and the driving assembly may be configured to drive the second end of each of the connecting rods to move along a moving direction so as to drive the plurality of finger to rotate. The gripper may further include a force detecting assembly connected to the case and the driving assembly, which may be configured to limit a position of the driving assembly along the moving direction and to detect a force from the driving assembly.

Abstract: Methods and systems for insertion mounting workpieces are provided. In one embodiment, a method is provided that includes acquiring a position of the second fitting part of the receiving component, moving the first fitting part of the workpiece towards the second fitting part of the receiving component until the workpiece is in contact with the receiving component, and rotating the workpiece while pressing the workpiece towards the receiving component. The implementation of the present disclosure may be applied for various types of workpieces and receiving components and may overcome minor deviations of positions between the workpiece and the receiving component during the insertion operation, thereby improving the efficiency of the insertion operation.

Abstract: A grasping mechanism includes a base and at least two linkage grasping assemblies. Each linkage grasping assembly includes a grasping member, a first rod and a second rod. The grasping member includes a grasping portion and a connecting portion. The first rod has a first end rotatably connected to the connecting portion and a second end rotatably connected to the base. The second rod has a first end rotatably connected to the connecting portion and a second end rotatably connected to the base.

Abstract: The present disclosure relates to a brake mechanism, a joint actuator and a robot. The brake mechanism includes a friction member configured to be fixed to a rotor of the motor, a brake member abutting against one side of the friction member, a pushing member abutting against the other side of the friction member and configured to provide an adjustable pushing force to the brake member, a locking mechanism configured to prevent the brake member from rotating according to a brake command.