SAFETY FUNCTIONS IN AN INDUSTRIAL ROBOT

    公开(公告)号:US20250108510A1

    公开(公告)日:2025-04-03

    申请号:US18863780

    申请日:2022-05-13

    Applicant: ABB Schweiz AG

    Abstract: A method of controlling an industrial robot, including a robot controller, a programming interface, which is separate from the robot controller, and a robot manipulator with a plurality of actuators. The method includes: receiving a first release signal via a first safe input means; receiving actuator-selection data, which indicates one or more of the actuators, via an arbitrary input means at the programming interface; receiving a second release signal via a second safe input means at the programming interface after having received the actuator-selection data; and, in response to determining that the first and second release signals are still received, causing the actuators indicated by the actuator-selection data to enter a movement-without-drive-power mode.

    Monitoring a Resolver
    12.
    发明申请

    公开(公告)号:US20240393136A1

    公开(公告)日:2024-11-28

    申请号:US18796910

    申请日:2024-08-07

    Applicant: ABB Schweiz AG

    Abstract: A resolver comprises a pair of stator windings and a rotor winding that is rotatable with respect to the stator windings and inductively coupled to these. A method for monitoring the resolver comprises exciting the rotor winding with an alternating current having an oscillation frequency and a first phase, obtaining voltages induced in the stator windings by the alternating current flowing in the rotor winding, deciding that the resolver is defective when a shift between phases of a first one of said induced voltages and of the alternating current differs from a nominal phase shift by more than a predetermined phase threshold.

    Distance measuring system and method, and robot system using same

    公开(公告)号:US10788576B2

    公开(公告)日:2020-09-29

    申请号:US16690162

    申请日:2019-11-21

    Applicant: ABB Schweiz AG

    Abstract: A distance measuring system includes: at least one emitter, which emits a frequency-variable scanning signal; at least one receiver; and an analysis unit for computing a distance to an object reflecting the scanning signal on the basis of a difference between the frequencies of the emitted and the received scanning signal. The rate of change of the frequency of the scanning signal in a first operating mode of the distance measuring system has a first finite value. The rate of change of the frequency in a second operating mode has a second finite value. The analysis unit is configured to compute a first distance on the basis of a frequency difference ascertained in the first operating mode, to compute a second distance on the basis of a frequency difference ascertained in the second operating mode, and to evaluate the correspondence between first and second computed distance.

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