Abstract:
A rotary joint, a hollow gear and a hollow wiring unit having a first flexible printed circuit board therein, to allow hose to pass through both the hollow gear and the hollow wiring unit. A robot includes the rotary joint.
Abstract:
An industrial robot includes first and second kinematic chains configured to transmit the movements of corresponding first and second actuators to respective movements of an end effector. The first kinematic chain includes a first rod which is stiff. The second kinematic chain includes elements between the second actuator and the first rod such that the actuation of the second actuator causes bending forces on the first rod. The first and second kinematic chains thereby have the first rod as a common element, which improves compactness and accessibility of the robot. This improvement assumes that the robot is provided with one or more stiff rods that can bear the bending forces resulting from the actuation of the corresponding actuators.
Abstract:
A power cable assembly device adapted to be arranged in the spaces between neighbouring power cores of a power cable, includes a profiled body made of a polymer material and adapted to the cross-sectional shape and elongation of the power cable, said profiled body including a chamber and a slit to the chamber, the chamber being adapted to receive a fibre optic cable via the slit. The profiled body is provided with a pair of transitions converging towards the slit, the transitions being adapted to supportingly receive a fibre optic cable to be introduced through the slit.
Abstract:
Among other things, one or more techniques and/or systems are provided for providing recommendations to address design flaws of power system equipment and/or model design flaws for equipment model types of power system equipment. For example, historical sensor data and/or historical field test data, collected from power system equipment, may be analyzed to identify a design flaw of the power system equipment (e.g., a design flaw of a seal ring). A redesign cost to redesign the power system equipment, a failure impact of a failure from the design flaw, a maintenance repair and/or replacement cost, a manufacture alternative component cost to use an alternative component for manufacturing the power system equipment, and/or other factors may be taken into account to crate and provide a recommendation to address the design flaw.
Abstract:
A method and a system for calibrating a first coordinate system Rf of a robot unit with a second coordinate system Cf of an object identification unit, wherein the robot unit includes a robot arm with an end effector and the object identification unit includes a camera unit. The calibration is performed using a calibration marker on the end effector. The method determines the intrinsic and the extrinsic parameters of the camera unit in two steps, a first step where the intrinsic parameters and a rotational part of the extrinsic parameters are determined, and a second step where a translational part of the extrinsic parameters are determined.
Abstract:
A circuit breaking arrangement is disclosed, which is adapted to be coupled to a transmission line arranged to carry direct current for controllably effecting discontinuation of flow of direct current in the transmission line. The circuit breaking arrangement includes a current interrupter unit adapted to, when actuated, interrupt current in the transmission line and a first resonance circuit and at least a second resonance circuit. Each of the first and the at least a second resonance circuit is adapted to, upon actuation of the current interrupter unit and when the respective resonance circuit is activated, generate a resonance current superposing current of any arc generated in the current interrupter unit after actuation thereof. At least during a predefined period immediately after actuation of the current interrupter unit a resonance current that has been generated by the first resonance circuit flows into the current interrupter unit from a different direction than a resonance current generated by the second resonance circuit would have, or vice versa.
Abstract:
The invention relates to a method, searching arrangement and a computer program product for searching for process control objects in a process control system (10). A searching unit (22; 38) providing a search function receives, from a user, a first search term regarding process control objects in the process control system, obtains the position of the user in the process control system, searches for process control objects using the first search term, and presents the results of the search, where the presented results depend on the user position.
Abstract:
A method for controlling a first and a second reverse-conducting insulated gate bipolar transistor (RC-IGBT), electrically connected in series, is disclosed. A collector of the first RC-IGBT is electrically connected to a positive pole of a direct current voltage source, and an emitter of the second RC-IGBT is electrically connected to a negative pole of the DC voltage source. Further, an emitter of the first RC-IGBT is electrically connected to a collector of the second RC-IGBT to form an alternating current terminal. A gate voltage is applied to respective gates of the first and second RC-IGBTs, wherein the gate voltage is controlled based on a magnitude and a direction of an output current on the AC terminal and on a command signal alternating between a first and a second value.
Abstract:
The present invention discloses a hybrid electrification system of pump station and optimal operation method thereof. Said hybrid electrification system of pump station, comprises a central controller. It further comprises a shared Variable Frequency Drive (VFD) busbar and a common busbar, both of which being connected to said central controller. Said shared VFD busbar is shared by two or more said motor-pump chains and selectively drives one, two or more said motor-pump chains. Compared with the existing prior arts, the proposed solutions are much more intuitive and practical in the field of the pump station.
Abstract:
Cells in a phase leg of a multilevel converter are controlled through regulating, using tap-changer control, the modulation index of the converter to above 0.80, providing a group of carrier waves for the phase leg, where these carrier waves are identical but displaced in time from each other with a time delay, providing a voltage reference for the phase leg being separate from voltage references provided for other phase legs, stop switching of the cells when waveform values of a power transmission converter waveform are detected to be in a selected interval around a peak value of the power transmission converter waveform and control switching of the cells based on comparisons of the respective carrier waves with the voltage reference when the waveform values of the power transmission converter waveform are detected to be outside the selected interval.