摘要:
It is presented a power system (3) for dynamic positioning of a vessel. The power system disclosed herein reduces the specific fuel consumption, reduces carbon buildup deposits and the risk of cylinder bore glazing while in combustion engine driven generators and provides an adequate protection against blackouts for several dynamic positioning classes. The power system (3) comprises a first combustion engine driven generator (G1), a second combustion engine driven generator (G2), a battery unit (11), and a converter unit (9) arranged to provide power to the vessel from the battery unit (11), wherein in a first operational state of the power system (3) only the first combustion engine driven generator (G1) is arranged to deliver power to the vessel, and wherein in a second operational state, in which the first combustion engine driven generator (G1) is subject to a fault, the second combustion engine driven generator (G2) is arranged to deliver power to the vessel, and wherein the converter unit (9) is arranged to deliver power to the vessel during transition from the first to the second operational state. It is also presented a sectionalised power system (2) which is a system comprising several power systems (3) as defined hereabove.
摘要:
The invention relates to a method for localizing a node in a wireless network, the method comprising: receiving location signals transmitted by beacons, the location signals comprising information about the locations of the respective beacons; detecting the respective received signal strengths of the received location signals; obtaining information about the different signal levels at which the beacons can transmit; studying the received location signals; determining the signal levels used by each of the beacons for the transmission of the location signals, based on the studying of the received signals; calculating a distance to each of the beacons based on the detected signal strengths and the determined signal levels; and localizing the node by means of the received location information and the calculated distances. The invention also relates to a node ant to a wireless network.
摘要:
An industrial robot including a plurality of arms movable relative each other about a plurality of joints, and electrical motors moving the arms. The robot is also arranged and designed to resist corrosion in a harsh environment. The robot is also mobile and arranged for movement or travel and suitable for maintenance and inspection tasks in an installation for oil and gas.
摘要:
The invention comprises a drive controller arranged to provide electrical power from a power supply (10) to a machine (8) or load, over a long AC power cable of the order of kilometers. The drive controller (4) is arranged with circuits and/or control processes to provide AC current at a constant ratio of voltage and frequency to said machine (8) or load. The drive controller maintains voltage and frequency at the machine terminals despite fluctuations in voltage and/or frequency that would ordinarily be caused by the load. This is done by estimating the voltage and current at the machine terminals and adapting the drive controller output accordingly to actively vary the converter output dependent on the load of the machine or other load. In other aspects of the invention a method and a computer program for carrying out the method are described.
摘要:
A method is disclosed for one or more users to control at least one robot in a robot work area, said work area comprising said robot, a robot controller (7a-n) and at least one tool and/or sensor for carrying out one or more movements to carry out a task, said robot being controlled by means of instructions in a robot program running in said robot controller. The method comprises receiving (51), at a distributed node (5a-n), a task program for carrying out at least part of said task based on a conversion (19) of a user command from a user (12, 12'), and sending (54) from the distributed node to said robot controller (7a-n) a robot program based on the task program with instructions for said robot (71, 81, 91) to execute one or more movements. A distributed node (5a), a central node (3), a system for carrying out the method and computer programs are also disclosed.
摘要:
A method for accessing statistical analysis data on industrial devices of an industrial production line, wherein the method comprises: - integrating statistical analysis tools into the industrial devices, - generating statistical data using the integrated statistical analysis tools on the devices, - presenting the statistical analysis data on devices, resulting in access to the analyzed statistical data on the devices.
摘要:
The invention refers to an explosion protection system for electrical apparatuses and machineries, such as manipulators or industrial robots, located in hazardous environments, i.e. environments containing explosive concentrations of inflammable gases, dusts or vapours, comprising means for applying internal pressurized air into an explosion proof enclosure and that has a purging system and electrical components, such as motors, relays, IC-boards, cables etc. The invention is achieved by, that a flow-and pressure sensor is arranged as an integrated unit and designed to stand high dynamic forces by having low inertia, balanced arrangement of moving parts and a movement guide, e.g. an axle with a support guide, with low friction.