A method for measuring a pose of a robotic end tool, including: obtaining a three-dimensional feature of a flange and a three-dimensional feature of the end tool, establishing a first coordinate system and a second coordinate system at the center of the flange and the center of the end tool respectively, calculating a positional offset of the second coordinate system relative to the first coordinate system, and calculating a rotation offset of the second coordinate system relative to the first coordinate system according to each unit vector of the second coordinate system, so as to obtain a pose of the end tool relative to the flange. The method provided in the present application, compared with the manual observation method, the precision and stability of the pose measurement method are high.

A robot system including a robot apparatus and an imaging apparatus includes a control apparatus configured to control the robot apparatus and the imaging apparatus, and the control apparatus controls, based on a path in which a predetermined part of the robot apparatus is moved, a movement of the imaging apparatus to image the predetermined part even if the robot apparatus is moved.

A system including a robot mean to move a member by using a first camera coupled to the robot, a second camera coupled to the robot, a control device configured to control position of the robot in order to minimize a pixel-wise distance between the member and a target based on alternating input from the first camera and the second camera.

A robot including an arm, a tool attached to the arm, a measurement fixture to be attached to a tip portion of the tool detachably, and a controller that recognizes a reference coordinate system used to control the arm, and that controls the arm. The controller stores data indicating a positional relationship between a tip of the tool and the measurement fixture or data to be used to calculate the positional relationship, and the controller calculates positional coordinates of the tip of the tool in the reference coordinate system based on position data of the measurement fixture and the positional relationship, where the position data is detected by using acquired image data from a visual sensor whose position is associated with the reference coordinate system.

A system for calibrating tool center point of robot is provided, which may include a first image sensor, a second image sensor, and a controller. The first image sensor may have a first image central axis. The second image sensor may have a second image central axis not parallel to the first image central axis, and intersect the first image central axis at an intersection point. The controller may control a robot to repeatedly move a tool center point thereof between the first and the second image central axis. The controller may record a calibration point including the coordinates of the joints of the robot when the tool center point overlaps the intersection point, and then move the tool center point and repeat the above steps to generate several calibration points, whereby the controller may calculate the coordinate of the tool center point according to the calibration points.

A grasping system includes a robotic arm having a gripper. A fixed sensor monitors a grasp area and an onboard sensor moves with the gripper also monitors the area. A controller receives information indicative of a position of an object to be grasped and operates the robotic arm to bring the gripper into a grasp position adjacent the object based on information provided by the fixed sensor. The controller is also programmed to operate the gripper to grasp the object in response to information provided by the first onboard sensor.

A system for locating the center line of a bolt which extends through an aircraft part, including a robot which carries a nut or collar placement device and a stereo camera. A control system operates the camera to produce two images of the fastener at a specified angle. A processor then transforms the image information to control information for the robot to align the nut or collar placement device with the centerline of the fastener and then to place the nut or collar on the end of the fastener.

A system for calibrating tool center point of robot is provided, which may include a first image sensor, a second image sensor, and a controller. The first image sensor may have a first image central axis. The second image sensor may have a second image central axis not parallel to the first image central axis, and intersect the first image central axis at an intersection point. The controller may control a robot to repeatedly move a tool center point thereof between the first and the second image central axis. The controller may record a calibration point including the coordinates of the joints of the robot when the tool center point overlaps the intersection point, and then move the tool center point and repeat the above steps to generate several calibration points, whereby the controller may calculate the coordinate of the tool center point according to the calibration points.

A robot system including a robot apparatus and an imaging apparatus includes a control apparatus configured to control the robot apparatus and the imaging apparatus, and the control apparatus controls, based on a path in which a predetermined part of the robot apparatus is moved, a movement of the imaging apparatus to image the predetermined part even if the robot apparatus is moved.

A method for calibrating a robot system having a planar pick surface includes: bringing a robot gripper to a first location against the pick surface; and generating a first image of the robot gripper from below. When knowing that a certain identifiable part of the robot gripper in images always lies against the planar pick surface, the position and orientation of the pick surface in relation to a manipulator coordinate frame can be fully defined if the robot gripper's orientation in relation to the pick surface is known, or if there are images on identifiable parts of the robot gripper in at least three different positions against the pick surface.