An inverse kinematics solving method for redundant robot as well as a redundant robot using the same are provided. The method includes: obtaining an expression of a Jacobian matrix null space of a current configuration of each robotic arm of the redundant robot corresponding to a preset end pose of the robotic arm according to the preset end pose, and obtaining a relation between an angular velocity of the joints of the redundant robot in the Jacobian matrix null space of the current configuration based on the obtained expression; traversing the Jacobian matrix null space using the relation, and building an energy cost function of the redundant robot based on the relation; obtaining a target joint angle of each joint of the redundant robot based on the optimal inverse kinematics solution to transmit to the servo of the joint so as to control the joint.

A robotic medical system can include a user console, a robotic arm, and an adjustable arm support coupled to the robotic arm. The robotic medical can be configured to control null space motion of the robotic arm and/or the adjustable arm support based on inputs from two or more tasks of a plurality of tasks for execution by the robotic medical system. For example, the plurality of tasks can include contact detection of the robotic arm, optimization of the adjustable arm support, collision and/or joint limit handling via kinematics, robotic arm null space and/or bar pose jogging, and/or motion toward a preferred joint position.

A method for controlling a robot to perform a task, for which the robot is redundant, includes specifying an adjustment of first and second axes of at least one pair of two movement axes of the robot based on a specified operating mode such that both axes can be adjusted and adjustment of the first axis is prioritized over the second axis if a first operating mode is specified. Adjustment of the second axis is prioritized over the first axis if a second operating mode is specified. Additionally or alternatively, adjustment of at least one selected movement axis is specified based on a specified operating mode such that this axis can be adjusted or is blocked independently of the task if a reduced operating mode is specified, and can be adjusted for the purpose of performing this task if an operating mode differing from this reduced operating mode is specified.

A method includes receiving input data indicative of tactile input at a bidirectional jog control device associated with a seven-degree-of-freedom (7DOF) robotic arm, where the 7DOF robotic arm is in a first arm configuration with an end effector of the 7DOF robotic arm positioned at a first pose in an environment. Based on the input data, the method further includes determining a direction to jog the 7DOF robotic arm through a null space while keeping the end effector fixed at the first pose in the environment. The method additionally includes controlling the 7DOF robotic arm to jog through the null space in the determined direction to a second arm configuration, where the end effector is positioned at the first pose in the environment when the 7DOF robotic arm is in the second arm configuration.

The present disclosure provides a robotic arm control method as well as an apparatus and a terminal device using the same. The method includes: obtaining a current joint angle of each of M joints of the robotic arm; obtaining a reference included angle based on the current joint angle of each of the M joints of the robotic arm; determining an expected included angle corresponding to the robotic arm within a target angle range based on the reference included angle and the preset included angle related evaluation function; and controlling the robotic arm based on the target joint angles of the M joints.

The present disclosure provides a method for controlling an arm of a robot, including obtaining obstacle information relating to the arm of the robot by at least one sensor, obtaining current posture information of the arm of the robot by a least one detector and obtaining an expected posture information of an end-portion of the arm of the robot, determining an expected trajectory of the end-portion of the arm of the robot, determining an expected speed of the end-portion of the arm of the robot in accordance with the expected trajectory of the end-portion, determining a virtual speed of a target point on the arm of the robot, and configuring a target join speed corresponding to a joint of the arm of the robot. Such that the redundant arm of the robot may be configured to prevent from contacting the obstacles in the complex environment while performing corresponding tasks.

The present disclosure provides a redundant robotic arm control method, a redundant robotic arm, and a computer readable storage medium. The method includes: obtaining an external force acting on an end of the robotic arm and an external torque acting on each joint; calculating a first joint speed of each joint based on a degree of influence of the joint on the end in each motion dimension and the external force acting on the end; determining a zero space speed of each joint corresponding to a current position of the end based on a link torque of an external force acting on a link with respect to the joint; calculating a total joint speed based on the first joint speed and the zero space speed; and controlling the robotic arm to the move according to the total joint speed.

A robotic system comprising: a robot having a base and an arm extending from the base to an attachment for an instrument, the arm comprising n joints, where n>1, whereby the configuration of the arm can be altered, the arm having a plurality of configurations for a given relationship between the base and the attachment for the instrument, the robot comprising a driver for each joint configured to drive the joint to move and a joint sensor for each joint for sensing a state of the joint; and a control unit configured to: obtain a desired position of the attachment for the instrument; for each of k joints where k<n, obtain a sensed joint state; compare the obtained k sensed joint states to a set of constraint criteria, the set of constraint criteria being indicative of the arm moving from a first configuration towards a second configuration, where movement of the arm is more constrained in the second configuration than in the first configuration; where the obtained k sensed joint states match the set of constraint criteria, determine a magnitude of an adjustment signal configured to slow, halt or reverse movement of the arm towards the second configuration; using the desired position of the attachment for the instrument and the obtained k sensed joint states, determine a direction of the adjustment signal; for each of the n joints, obtain a sensed joint state; using the desired position of the attachment for the instrument, the obtained n sensed joint states and the adjustment signal, determine a set of control signals for controlling the drivers; and drive the joints using the set of control signals.

In some aspects, computer-implemented methods for selecting a robotic tool path for a manufacturing processing system to execute a material processing sequence in three-dimensional space can include: providing to a computer-readable product including robotic system data of a robotic tool handling system and workpiece data relating to a processing path of a tool along the workpiece; generating a plurality of possible robotic tool paths to be performed to move the tool along the processing path; identifying one or more obstacles, or an absence of obstacles, associated with the robotic tool paths; comparing robotic tool paths based on a predetermined robotic parameter to be controlled as the tool moves from the start point to the end point; and based on the identified obstacles, determining feasible tool paths, between the start point and the end point that avoid the obstacles, that can be obtained by adjusting the predetermined robotic parameter.

A controller for robot arms and the like having mechanical singularities identities paths near the singularities and modifies those paths to avoid excessive joint movement according to a minimization of tool orientation deviation to produce alternative paths that minimize changes in the tool orientation such as can affect application such as welding, sealant application, coating and the like.