Proposed is an elastic body having variable rigidity, wherein the elastic body is used in a series elastic actuator module, connects an input and an output, and has a rigidity that varies according to the applied torque. The elastic body having variable rigidity comprises: a connection part which receives torque from the input side or the output side; and a spring part connected to and receiving torque from the one selected from among the input side and the output side which is different from the connection part, wherein the spring part is formed integrally with the connection part and has a rigidity that varies as the connection part and the spring part come into contact with each other due to deformation caused by the applied torque.

A micro-robot magnetic drive device and a control method based on double closed loop three-dimensional path tracking are disclosed. The method includes: inputting a desired tracking path, obtaining current pose information of a magnetic micro-robot through a camera, and then calculating a position of a center of mass, an actual axial direction, coordinates of a desired position point with the shortest distance from the center of mass on a desired tracking path, and a tangent direction of this point; calculating a horizontal distance, a vertical distance, a direction angle error, and a pitch angle error of the two points according to the actual axial direction, the tangent direction, and disturbance compensation; and obtaining a required rotating magnetic field according to a designed position closed loop controller.

An arm unit of a transfer robot includes an R-axis motor configured to relatively rotate a second arm with respect to a first arm. The R-axis motor is fixed to the first arm so as to protrude to below an arm axis holding portion of the first arm with an output shaft thereof facing upward. The output shaft is configured to penetrate the first arm from below. The output shaft is fixed to the second arm by a shaft fixing portion.

The present process of controlling an industrial robot includes steps consisting of calculating, in the modules implemented by the central unit, a time-dependent composite setpoint defining articular forces and velocities, according to a target trajectory and to an operating mode; calculating, in modules implemented by the central unit, a behavior matrix which describes a desired behavior of the robot arm, defining directions along which the calculated composite setpoint is to be applied; calculating, in a module implemented by the in auxiliary unit, an articular force setpoint for controlling the axis controller module; and calculating, in the axis controller module implemented by the auxiliary unit, the control setpoints for the power units according to the articular force setpoint.

The present process of controlling an industrial robot includes steps consisting of calculating a time-dependent composite setpoint defining articular forces and/or velocities, according to a target trajectory and to an operating mode; calculating (S106) a behavior matrix which describes a desired behavior of the robot arm, defining directions along which the calculated composite setpoint is to be applied; calculating (S108) an articular force setpoint for controlling the axis controller module and calculating the time derivative of a homogeneous internal state at an articular position. The articular force setpoint for controlling the axis controller module is calculated from a control function which adjusts the difference between the articular position and the internal state determined by integrating said time derivative of the internal state.

A drive structure of a desktop robotic arm is disclosed, including a base and a turntable. The base is internally provided with a turntable drive motor and a turntable drive shaft, the turntable drive motor is drive-connected to the turntable drive shaft, and the turntable drive shaft is drive-connected to the turntable. The turntable is provided with an upper arm drive motor and a forearm drive motor. The turntable drive motor, the upper arm drive motor and the forearm drive motor are all servo motors with absolute value encoders. According to the drive structure of the desktop robotic arm, by using servo motors as the drive motors for controlling the turntable, an upper arm and a forearm, for which the absolute value encoders are correspondingly configured, control accuracy and driving power can be improved. Further, the present invention also discloses a desktop robotic arm and a robot.

A dual-output-shaft servo includes a housing including two first sensors and two actuating mechanisms. Each actuating mechanism includes a motor assembly, a speed reduction mechanism opposite the motor assembly, and a transmission mechanism arranged between the motor assembly and the speed reduction mechanism. The speed reduction mechanism includes an output component, and a connection shaft is fixed to the output component. A first sensor counterpart is attached to an end of the connection shaft which faces the motor assembly. The transmission mechanism is to transmit mechanical power from the motor assembly to the speed reduction mechanism. The axes of rotation of the output components of the speed reduction mechanisms are skew or intersected with each other.

A robotic system includes a base movable relative to a floor surface and a controllable arm extending from the base. The arm is configured to support and move a tool. The arm has a powered joint operable to position and/or orient a distal portion of the arm. The robotic system further includes a processor coupled to the powered joint and configured to drive the powered joint to reposition the base while the position and/or orientation of the distal portion of the arm is maintained.

A service robot includes a robot body, a main post vertically mounted on the robot body, and at least one service unit provided on the main post to be movable vertically and to be rotatable, and including a service tool. The service unit includes a main plate that is disposed in an inner space of the main post, and a mounting member that is provided to be rotatable along an outer circumferential surface of the main post, and coupled to the main plate. The service tool is mounted on the mounting member, a vertical driving device is disposed in the inner space of the main post to move the main plate vertically, and a rotation driving device is installed on the main plate to rotate the mounting member.

An objective of the present invention is to reduce the downtime which occurs when changing a servo motor device. A servo motor device includes a motor section and a reduction gear configured to output a driving force by reducing a speed of rotation of the motor section, wherein a control device includes a detecting section configured to acquire detected information about operation of the motor section, and a computing section configured to generate an approximate curve based on a behavior for a time sequence of a parameter and to calculate predicted lifetime information of the servo motor device based on the approximate curve thus generated, wherein the parameter has been calculated by means of the detected information.