Patents by Inventor Jan-Erik Eriksson
Jan-Erik Eriksson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9599401Abstract: A method and device for controlling a melting and refining process in an electric arc furnace for melting a metal, wherein the electric arc furnace includes molten and solid metal and a slag layer on the surface of the molten metal, wherein an electromagnetic stirrer is arranged for stirring the molten metal. The method includes calculating/determining masses of the molten and solid metal at a point of time, wherein the calculation is based on initial values of the molten and solid metal, an arc power supplied to the electric arc furnace, and temperatures of the molten and solid metal, determining a stirring power based on the calculated/determined masses, and supplying the determined stirring power to the electromagnetic stirrer.Type: GrantFiled: April 9, 2014Date of Patent: March 21, 2017Assignee: ABB Schweiz AGInventors: Michael Lundh, Xiaojing Zhang, Jan-Erik Eriksson, Lidong Teng, Carl-Fredrik Lindberg
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Patent number: 9488441Abstract: The present invention relates to a method and system for mission planning. The method comprises the steps of: —providing (805) information related to a target scene, said information comprising information related to a plurality of targets, —providing (810) information related to a plurality of resources for target attack, —determining (820) at least one possible attack direction against each target, —determining (830) a target effect associated to attacking the target from each of said determined at least one possible attack direction for each target, —forming (840) a network of possible routes between the targets for the resources, wherein the possible routes are determined based on the possible attack directions related to each target, and —forming (845) the mission plan for fighting the targets based on the determined target effects from the respective attack directions and based on the formed network of possible routes, wherein each target is fighted a predetermined amount of times.Type: GrantFiled: May 11, 2012Date of Patent: November 8, 2016Assignee: SAAB ABInventors: Jan Erik Eriksson, Kristian Lundberg
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Patent number: 9360255Abstract: A method for reducing vortex formation in molten metal when bottom tapping the molten metal from a metallurgical vessel in a metal making process. The method includes the steps of tapping the molten metal via a tapping hole in the metallurgical vessel, and providing a flow of the molten metal in the metallurgical vessel while tapping via a time-varying electromagnetic field applied to the metallurgical vessel, the flow of the molten metal being such that it constantly moves vortices in the molten metal away from a tapping hole region during the tapping to thereby prevent accumulation of the vortices for vortex formation over the tapping hole. It is also presented an arrangement for carrying out the method.Type: GrantFiled: February 27, 2014Date of Patent: June 7, 2016Assignee: ABB Research Ltd.Inventors: Jan-Erik Eriksson, Tord Kroon, Mohamed Ali Rahmani, Ola Widlund, Xiaojing Zhang, Christer Carlsson, Hongliang Yang
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Publication number: 20160101282Abstract: The present invention relates to the field of electrotherapy and measuring by means of electric currents for diagnostic purposes, and more particularly to an electrode arrangement for facilitating wound healing, a method for measuring wound healing and a wound dressing having an electrode arrangement. A wound dressing according to the present invention comprises at least two impedance reference electrodes, a frame like counter-electrode and stimulation electrodes in a form of an array; and a bioadhesive affinity layer surrounding the stimulation electrodes; said wound dressing being suited for applying on top of the wound so that the stimulation electrode array is on the wound area, and that the at least two impedance reference electrodes and the frame like counter-electrode are suited for placing in contact with the healthy skin surrounding the wound area; which electrodes, are suited for applying LIDC type electrical stimulation current to the wound area and for bioimpedance measurement.Type: ApplicationFiled: May 21, 2014Publication date: April 14, 2016Inventors: Mikael Bergelin, Jan-Erik Eriksson, Max Johansson, Chunlin Xu, Ann-Sofie Leppänen, Stefan Willför, Simo Köppä, Atte Kekonen, Heimo O. Ylänen, Jari Viik, Jari Hyttinen
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Publication number: 20160081580Abstract: The present invention relates to the field of electrotherapy and measuring by means of electric currents for diagnostic purposes, and more particularly to an electrode arrangement for facilitating wound healing, a method for measuring wound healing and a wound dressing having an electrode arrangement. A wound dressing according is described which includes at least two impedance reference electrodes, a frame like counter-electrode and stimulation electrodes in a form of an array; and a bioadhesive affinity layer surrounding the stimulation electrodes; said wound dressing being suited for applying on top of the wound so that the stimulation electrode array is on the wound area, and that the at least two impedance reference electrodes and the frame like counter-electrode are suited for placing in contact with the healthy skin surrounding the wound area; which electrodes, are suited for applying LIDC type electrical stimulation current to the wound area and for bioimpedance measurement.Type: ApplicationFiled: December 5, 2015Publication date: March 24, 2016Inventors: Mikael Bergelin, Jan-Erik Eriksson, Max Johansson, Chunlin Xu, Ann-Sofie Leppänen, Stefan Willför, Simo Köppä, Atte Kekonen, Heimo O. Ylänen, Jari Viik, Jari Hytti
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Publication number: 20150352635Abstract: A method of controlling the temperature of molten metal in a tundish during a ladle tapping cycle in a continuous casting process. The method comprises a) obtaining a measure of a temperature of molten metal in the tundish; b) comparing the measured temperature with a desired tundish melt temperature; c) determining whether the measured temperature is lower than desired; d) controlling the temperature of the molten metal in the tundish by with a heating arrangement, and an electromagnetic stirrer which stirs the molten metal in order to distribute heated molten metal in the tundish such that the temperature of the molten metal approaches the desired temperature.Type: ApplicationFiled: February 19, 2013Publication date: December 10, 2015Inventors: Jan-Erik Eriksson, Olof Sjödén
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Publication number: 20150316352Abstract: The present invention relates to a method and system for mission planning. The method comprises the steps of: —providing (805) information related to a target scene, said information comprising information related to a plurality of targets, —providing (810) information related to a plurality of resources for target attack, —determining (820) at least one possible attack direction against each target, —determining (830) a target effect associated to attacking the target from each of said determined at least one possible attack direction for each target, —forming (840) a network of possible routes between the targets for the resources, wherein the possible routes are determined based on the possible attack directions related to each target, and —forming (845) the mission plan for fighting the targets based on the determined target effects from the respective attack directions and based on the formed network of possible routes, wherein each target is fighted a predetermined amount of times.Type: ApplicationFiled: May 11, 2012Publication date: November 5, 2015Applicant: SAAB ABInventors: Jan Erik Eriksson, Kristian Lundberg
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Patent number: 9045810Abstract: A method for melting steel in an electric arc furnace (EAF). A hot heel is provided in the EAF. Metal scrap is loaded into the EAF. The metal scrap is melted in the EAF. The mass of the hot heel in relation to the mass of the metal scrap that is initially beyond the surface of the hot heel is a certain minimum. This minimum is 0.75 times the relation between the heat required to melt the metal scrap beyond the surface of the hot heel and the heat that can be taken from the hot heel without it being solidified when a theoretical heat balance calculation is applied as defined in a formula.Type: GrantFiled: July 3, 2014Date of Patent: June 2, 2015Assignee: ABB RESEARCH LTD.Inventors: Rebei Bel Fdhila, Jan-Erik Eriksson, Olof Hjortstam, Mohamed Ali Rahmani, Shiva Sander-Tavallaey, Ola Widlund, Hongliang Yang, Xiaojing Zhang
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Patent number: 8985189Abstract: An arrangement for a continuous casting process. The arrangement includes a vessel having a first opening for receiving molten metal in the vessel, a second opening for discharging the molten metal from the vessel, and a body extending between the first opening and the second opening, a first magnetic arrangement attached to the body, the first magnetic arrangement having a magnetic core with legs, and coils arranged around the legs, and a power system configured to provide an alternating current superimposed on a carrier current to each of the coils, each pair of alternating current and carrier current provided to a coil forming a flow control current, wherein flow control currents provided to adjacent coils are phase shifted relative each other, thereby creating a travelling magnetic field in molten metal in the vessel. A corresponding method is also presented herein.Type: GrantFiled: June 20, 2014Date of Patent: March 24, 2015Assignee: ABB ABInventors: Jan-Erik Eriksson, Hongliang Yang, Boo Eriksson
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Patent number: 8876934Abstract: An apparatus for electromagnetic stirring of the steel melt in an electrical arc furnace includes two electromagnetic stirrer units, a current supply, and a control unit. The two stirrers are mounted on an outer bottom surface of the electrical arc furnace at opposites sides of a central position of the bottom surface, the current supply is operatively connected to the two electromagnetic stirrer units, and the control unit is operatively connected to the current supply to control the operation of the two electromagnetic stirrer units.Type: GrantFiled: March 14, 2013Date of Patent: November 4, 2014Assignee: ABB Research Ltd.Inventors: Jan-Erik Eriksson, Mohamed Ali Rahmani, Ola Widlund, Olof Hjortstam, Rebei Bel Fdhila, Shiva Sander-Tavallaey, Ulf Sand, Xiaojing Zhang, Tord Kroon
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Publication number: 20140318314Abstract: A method for melting steel in an electric arc furnace (EAF). A hot heel is provided in the EAF. Metal scrap is loaded into the EAF. The metal scrap is melted in the EAF. The mass of the hot heel in relation to the mass of the metal scrap that is initially beyond the surface of the hot heel is a certain minimum. This minimum is 0.75 times the relation between the heat required to melt the metal scrap beyond the surface of the hot heel and the heat that can be taken from the hot heel without it being solidified when a theoretical heat balance calculation is applied as defined in a formula.Type: ApplicationFiled: July 3, 2014Publication date: October 30, 2014Inventors: Rebei Bel Fdhila, Jan-Erik Eriksson, Olof Hjortstam, Mohamed Ali Rahmani, Shiva Sander-Tavallaey, Ola Widlund, Hongliang Yang, Xiaojing Zhang
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Publication number: 20140305261Abstract: A method and device for controlling a melting and refining process in an electric arc furnace for melting a metal, wherein the electric arc furnace includes molten and solid metal and a slag layer on the surface of the molten metal, wherein an electromagnetic stirrer is arranged for stirring the molten metal. The method includes calculating/determining masses of the molten and solid metal at a point of time, wherein the calculation is based on initial values of the molten and solid metal, an arc power supplied to the electric arc furnace, and temperatures of the molten and solid metal, determining a stirring power based on the calculated/determined masses, and supplying the determined stirring power to the electromagnetic stirrer.Type: ApplicationFiled: April 9, 2014Publication date: October 16, 2014Inventors: Michael Lundh, Xiaojing Zhang, Jan-Erik Eriksson, Lidong Teng, Carl-Fredrik Lindberg
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Publication number: 20140299288Abstract: An arrangement for a continuous casting process. The arrangement includes a vessel having a first opening for receiving molten metal in the vessel, a second opening for discharging the molten metal from the vessel, and a body extending between the first opening and the second opening, a first magnetic arrangement attached to the body, the first magnetic arrangement having a magnetic core with legs, and coils arranged around the legs, and a power system configured to provide an alternating current superimposed on a carrier current to each of the coils, each pair of alternating current and carrier current provided to a coil forming a flow control current, wherein flow control currents provided to adjacent coils are phase shifted relative each other, thereby creating a travelling magnetic field in molten metal in the vessel. A corresponding method is also presented herein.Type: ApplicationFiled: June 20, 2014Publication date: October 9, 2014Inventors: Jan-Erik Eriksson, Hongliang Yang, Boo Eriksson
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Publication number: 20140175715Abstract: A method for reducing vortex formation in molten metal when bottom tapping the molten metal from a metallurgical vessel in a metal making process. The method includes the steps of tapping the molten metal via a tapping hole in the metallurgical vessel, and providing a flow of the molten metal in the metallurgical vessel while tapping via a time-varying electromagnetic field applied to the metallurgical vessel, the flow of the molten metal being such that it constantly moves vortices in the molten metal away from a tapping hole region during the tapping to thereby prevent accumulation of the vortices for vortex formation over the tapping hole. It is also presented an arrangement for carrying out the method.Type: ApplicationFiled: February 27, 2014Publication date: June 26, 2014Inventors: Jan-Erik Eriksson, Tord Kroon, Mohamed Ali Rahmani, Ola Widlund, Xiaojing Zhang, Christer Carlsson, Hongliang Yang
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Patent number: 8721789Abstract: An apparatus for crystallization of silicon includes a crucible for containing silicon, a heating and heat dissipating arrangement provided for melting the silicon contained in the crucible and for subsequently solidifying the molten silicon, and an electromagnetic stirring device provided for stirring the molten silicon in the crucible during the solidification of the molten silicon. A control arrangement is provided for controlling the heating and heat dissipating arrangement to solidify the molten silicon at a specified solidification rate and for controlling the electromagnetic stirring device to stir the molten silicon in response to the specified solidification rate of the molten silicon such that the ratio of a speed of the molten silicon and the specified solidification rate is above a first threshold value.Type: GrantFiled: March 15, 2012Date of Patent: May 13, 2014Assignee: ABB ABInventors: Jan-Erik Eriksson, Olof Hjortstam, Ulf Sand
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Patent number: 8632632Abstract: An apparatus for crystallization of silicon includes a crucible for containing silicon, a heating and heat dissipating arrangement provided for melting the silicon contained in the crucible and for subsequently solidifying the molten silicon, and an electromagnetic stirring device provided for stirring the molten silicon in the crucible during the solidification of the molten silicon. A control arrangement is provided for controlling the heating and heat dissipating arrangement to solidify the molten silicon at a specified solidification rate and for controlling the electromagnetic stirring device to stir the molten silicon in response to the specified solidification rate of the molten silicon such that the ratio of a speed of the molten silicon and the specified solidification rate is above a first threshold value.Type: GrantFiled: December 17, 2012Date of Patent: January 21, 2014Assignee: ABB ABInventors: Jan-Erik Eriksson, Olof Hjortstam, Ulf Sand
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Publication number: 20130269483Abstract: An apparatus for electromagnetic stirring of the steel melt in an electrical arc furnace includes two electromagnetic stirrer units, a current supply, and a control unit. The two stirrers are mounted on an outer bottom surface of the electrical arc furnace at opposites sides of a central position of the bottom surface, the current supply is operatively connected to the two electromagnetic stirrer units, and the control unit is operatively connected to the current supply to control the operation of the two electromagnetic stirrer units.Type: ApplicationFiled: March 14, 2013Publication date: October 17, 2013Inventors: Jan-Erik Eriksson, Mohamed Ali Rahmani, Ola Widlund, Olof Hjortstam, Rebei Bel Fdhila, Shiva Sander-Tavallaey, Ulf Sand, Xiaojing Zhang, Tord Kroon
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Publication number: 20130261949Abstract: The invention pertains to a vehicle separation system for a plurality of vehicles wherein the system is arranged to cooperatively provide distance separation for the plurality of vehicles, the system comprising: a storage module arranged in each of the plurality of vehicles, wherein each storage module comprises information related to a reference trajectory for each of the plurality of vehicles, a deviation detection module arranged to detect a deviation from said reference trajectory and generate at least one deviation alert, a communication module arranged to communicate the at least one deviation alert to each of the plurality of vehicles in response to the detected deviation, a separation module arranged to calculate an update of the reference trajectory for at least one of the plurality of vehicles, based on the reference trajectory of each of the plurality of vehicles, in order to provide distance separation between the plurality of vehicles.Type: ApplicationFiled: December 22, 2010Publication date: October 3, 2013Applicant: SAAB ABInventor: Jan-Erik Eriksson
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Publication number: 20130104601Abstract: An apparatus for crystallization of silicon includes a crucible for containing silicon, a heating and heat dissipating arrangement provided for melting the silicon contained in the crucible and for subsequently solidifying the molten silicon, and an electromagnetic stirring device provided for stirring the molten silicon in the crucible during the solidification of the molten silicon. A control arrangement is provided for controlling the heating and heat dissipating arrangement to solidify the molten silicon at a specified solidification rate and for controlling the electromagnetic stirring device to stir the molten silicon in response to the specified solidification rate of the molten silicon such that the ratio of a speed of the molten silicon and the specified solidification rate is above a first threshold value.Type: ApplicationFiled: December 17, 2012Publication date: May 2, 2013Inventors: Jan-Erik Eriksson, Olof Hjortstam, Ulf Sand
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Patent number: 8365058Abstract: A method of detecting communications errors by coding messages as pictures. A communications method useable to safely communicate a message or a signal from a first safety approved entity to a second safety approved entity via a third, non-safety approved entity including that each command is sent with the aid of a command message from the first to the second entity, an acknowledge message from the second to the first entity, and a go-ahead message from the first to the second entity.Type: GrantFiled: March 27, 2007Date of Patent: January 29, 2013Assignee: SAAB ABInventors: Rikard Johansson, Jan-Erik Eriksson, Peter Stendahl