Abstract:
A plant for transmitting electric power having a direct voltage network (18) for High Voltage Direct Current and at least one pole conductor interconnecting two stations (21, 22). In each station (21, 22), a bidirectionally controlled thyristor (BCT) conducts current in both directions as rectifying semiconductor components. A control unit (35) is adapted to control the current direction through the bidirectionally controlled thyristors so as to choose that the earth electrode (33, 34) of each station is always either anode or cathode.
Abstract:
A robot arm comprises an assembly (6) rotatable relative to a part (2) of the arm about an axis extending at an angle to a longitudinal axis of the arm part, said assembly comprising a drive unit (8) and a member (9) driven by the drive unit. A cable (35, 36) comprising one or more lines for communication of energy for driving and/or control purposes extends between the arm part (2) and the drive unit (8). The assembly (6) comprises an axle pin (13) rotatably supported relative to the arm part (2). The cable extends in a space (48) provided in the assembly and comprising a first part space (49) provided in the axle pin (13), the cable being coiled in screw-line-shape in said first part space, and a second part space (50), in which the cable extends from the first part space (49) to the drive unit. The two part spaces (49, 50) are separated from each other in a sealed manner by means of a separation element (51) which has first sealing members for adjoining sealingly to a wall delimiting the space and second members for sealed passage of the cable.
Abstract:
A photoconductive switch, having at least a part of a first layer doped with dopants providing substantially no free charge carriers for charge transport between the electrodes at the normal operation temperature of the switch, has the nature of the doping, i.e., concentration, type (n or p). The dopants, varied from the first side to an opposite, second side of the first layer for co-operating with the intensity distribution of the light emitted by an illumination source, strikes the first side versus energy so as to obtain a substantially even creation of free charge carriers throughout the depth of the first layer from the first to the second side when illuminated by the illumination source.
Abstract:
A device for relative movement of two elements comprises at least two first links, which are connected relative to a first of the elements via hinges and which are pivotable in substantially parallel planes relative to the first element under influence of at least one first power-exerting member. At least two second links, which are connected relative to a second of the elements via hinges, are pivotable in substantially parallel planes relative to the second element under influence of at least one second power-exerting member. The two first links form a first four-hinges system. The two second links form a second four-hinges system. These two four-hinges systems are coupled in series to each other between the first and second elements.
Abstract:
A device for supervising different positions of a valve of a high voltage converter station located on a high voltage potential level comprises members arranged on a high voltage potential level and adapted to detect function parameters of the valve on a high voltage potential level and send values detected thereby to first control units for controlling the semiconductor components of the valve. The first control units have devices for processing the detected values and the first control units are adapted to utilize light conductors running back therefrom to a valve control unit for sending data resulting from the processing to an arrangement for supervising the valve located on a low potential level.
Abstract:
An automatic configuration system for an operator console wherein one or more operators control and monitor physical facilities, operations or physically dispersed services. The system includes wearable personal identification devices worn by the operators and a control unit for communicating with the wearable personal identification devices in order to detect the presence of one or more operators within a defined control room area. Each personal identification device includes a sensor unit for monitoring operator data, and is adapted to communicate the operator data to the control unit, which is adapted to configure the operator console based on the operator data.
Abstract:
A method and apparatus are disclosed for off-line programming of multiple interacting robots. For example, a system for off-line programming of multiple interacting robots includes a computer for off-line programming and verification of program codes for multiple interacting robots and a robot controller connected to the computer to receive a download of at least one of the program codes for execution. Multiple interacting robots can be controlled by the robot controller.
Abstract:
An industrial robot including a contact panel having one or several contacts to allow connection to the industrial robot of one or several cables through which energy, signals or a substance may pass to and/or from the industrial robot. A cover forms part of an outer surface of the industrial robot. Each one of the one or several contacts of the contact panel protrudes through an opening in the cover so as to be accessible from the outside of the industrial robot. The contact panel is mounted to and supported by a holder that is secured in an internal cavity of the industrial robot so as to allow the contact panel to be held in place in the industrial robot when the cover is removed.
Abstract:
A method and apparatus are disclosed for off-line programming of multiple interacting robots. For example, a system for off-line programming of multiple interacting robots includes a computer for off-line programming and verification of program codes for multiple interacting robots and a robot controller connected to the computer to receive a download of at least one of the program codes for execution. Multiple interacting robots can be controlled by the robot controller.