Roll Eccentricity Compensation Patents (Class 700/156)
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Patent number: 9780829Abstract: A method, apparatus, computer program, data structure, signal relating to: causing correlation of a digital signal provided by a receiver with a motion-compensated correlation code, wherein the motion-compensated correlation code is a correlation code that has been compensated before correlation using one or more phasors dependent upon an assumed or measured movement of the receiver.Type: GrantFiled: March 24, 2016Date of Patent: October 3, 2017Assignee: Focal Point Positioning Ltd.Inventors: Ramsey Faragher, Nicolas Couronneau, Robert Mark Crockett
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Rolling of a strip in a rolling train using the last stand of the rolling train as a tension reducer
Patent number: 8676371Abstract: A rolling train for rolling a strip has a number of rolling stands and a coiler. The rolling stands have work and backing rolls. Data of the strip are fed to a control device of the rolling train which determines individual pass reductions for the rolling stands based on the data. It controls the main rolling stands and the coiler such that the strip is rolled in the main rolling stands according to the individual pass reductions and then coiled up. It determines the individual pass reductions such that they are zero and controls the rolling stand arranged directly upstream of the coiler such that—with respect to this main rolling stand—the tension in the strip on the outlet side is less than on the inlet side, but the strip runs through this rolling stand without undergoing any forming, at least on one side.Type: GrantFiled: July 1, 2008Date of Patent: March 18, 2014Assignee: Siemens AktiengesellschaftInventor: Berthold Botta -
Patent number: 8408032Abstract: A regulation device (7) for a rolling stand (2) has a force regulator (8) and a position regulator (9) mounted underneath the force regulator. During operation of the regulation device, a rolling force target value (F*) and a rolling force actual value (F) are supplied to the force regulator (8). A regulating distance correcting value (ds1*) is determined by the force regulator (8) from the rolling force target value (F*) and the rolling force actual value (F). The regulating distance correcting value (ds1*), an excentricity compensation value (ds2*), and a regulating distance actual value (s) of a regulating element (6) are supplied to the position regulator (9). A correcting quantity (dq) is determined by the position regulator (9) from the values (ds1*, ds2*, s) supplied thereto and is delivered to the regulating element (6). The regulating distance of the regulating element (6) is changed according to the correcting quantity (dq).Type: GrantFiled: January 21, 2008Date of Patent: April 2, 2013Assignee: Siemens AktiengesellschaftInventors: Hans-Joachim Felkl, Dietrich Wohld
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Patent number: 8386066Abstract: The invention relates to a method for suppressing the influence of roll eccentricities on the run-out thickness of a rolled stock, which runs through a rolling stand, roll eccentricities being identified by using a process model and taken into consideration in the determination of a correction signal for at least one final control element, preferably a final control element for the adjustment position, of the rolling stand, wherein the measured tensile force upstream of the rolling stand is fed to the process model to identify the roll eccentricities. According to the invention, variations in tensile force are fed back in a targeted manner to reduce the effects of periodic roll eccentricities on the rolled stock, whereas all other sources of variation are eliminated. A process model of the rolling nip and the rolls, preferably based on the observer principle, produces reliable data on the roll eccentricity.Type: GrantFiled: January 11, 2007Date of Patent: February 26, 2013Assignee: Siemens AktiengesellschaftInventors: Josef Hofbauer, Martin Niemann, Bernhard Weisshaar, Dietrich Wohld
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Publication number: 20090210085Abstract: The invention relates to a method for suppressing the influence of roll eccentricities on the run-out thickness of a rolled stock, which runs through a rolling stand, roll eccentricities being identified by using a process model and taken into consideration in the determination of a correction signal for a at lest one final control element, preferably a final control element for the adjustment position, of the rolling stand, wherein the measured tensile force upstream of the rolling stand is fed to the process model to identify the roll eccentricities. According to the invention, variations in tensile force are fed back in a targeted manner to reduce the effects of periodic roll eccentricities on the rolled stock, whereas all other sources of variation are eliminated. A process model of the rolling nip and the rolls, preferably based on the observer principle, produces reliable data on the roll eccentricity.Type: ApplicationFiled: January 11, 2007Publication date: August 20, 2009Inventors: Josef Hofbauer, Martin Niemann, Bernhard Weisshaar, Dietrich Wohld
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Patent number: 7475581Abstract: A method of increasing control precision of a path of a product in a leveling machine including: a fixed support cage; two leveling assemblies with parallel rollers, which are placed above and below the strip respectively; devices necessary to adjust the interlocking of the rollers; a mechanism for measuring leveling forces at least of two sides of the machine; and a theoretical pre-setting model. The method directly measures at least one value for the spacing of the leveling rollers, which is compared to reference values, and uses the members for adjusting the position of the leveling rollers to maintain the measured values equal to the reference values. The method is particularly suitable for machines used to level flat metal products.Type: GrantFiled: September 28, 2004Date of Patent: January 13, 2009Assignee: Siemens VAI Metals Technologies SASInventor: Andrzej Farnik
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Patent number: 6889112Abstract: A method for processing a surface corrects a relationship between a processing condition and a removal quantity (polished removal quantity) or a removal depth (polished removal depth) in accordance with a worked surface to obtain desired removal quantity or removal depth in processing the worked surface irrespective of the shape of the worked surface, forms a reference surface in a simple shape to obtain the relationship between the processing condition and the removal quantity or the removal depth readily, and executes such correction of the relationship between the processing condition and the removal quantity or the removal depth and such correction of unit removal shapes readily for a short time.Type: GrantFiled: March 22, 2002Date of Patent: May 3, 2005Assignee: Ricoh Company, Ltd.Inventors: Hiroyuki Endoh, Eiri Sagae
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Patent number: 6882931Abstract: A map data reading and processing section acquires map information belonging to a hierarchical structure classified depending on coverage of a road map, a remote controller specifies a bypass region to bypass traffic of a vehicle in response to an input operation, and the route search processing section of a navigating function section searches for a route that detours the bypass region when the bypass region is included within the coverage of the map information belonging to a hierarchy acquired by the map data reading and processing section.Type: GrantFiled: November 4, 2003Date of Patent: April 19, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Koichi Inoue
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Patent number: 6714843Abstract: The invention relates to a closed-loop control method for operation of individually driven rotating machine elements (M1, M2) with angle position control, which elements are coupled with a force fit or via a common load (L). In this case, parameters (UP) that describe the circumference of the driven corresponding machine elements (M1, M2) are supplied as a correction variable in the form of an angle position error (WA) to the input of the angle position regulator (WR). These may be diameters or radii of machine elements (M1, M2) which are involved, as well as a diameter and at least one diameter difference, or at least one radius and at least one radius difference.Type: GrantFiled: August 30, 2001Date of Patent: March 30, 2004Assignee: Siemens AktiengesellschaftInventor: Werner Agne
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Patent number: 6584379Abstract: In a robot machine having a plurality of rotational joint axes, a rotational angle of rotational joint axis and a tilt angle of robot arm against the direction of gravity are measured at three or more of rotational angle positions to obtain rotational angle information &THgr;i and tilt angle information Yi, and regression factors &agr; and &bgr; are derived by computation from a resulting regression function of Y=&agr; SIN(&THgr;+&bgr;)+&ggr;, thereby performing an original point adjustment of rotational joint axis based on the obtained tilt angle and tilt direction thereof.Type: GrantFiled: June 27, 2002Date of Patent: June 24, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasushi Mukai, Masaya Hirayama
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Patent number: 6408222Abstract: A strip thickness control method in a twin roll strip casting device having a fixed roll and a horizontally movable roll, the method including the steps of: measuring a movement value Gj(&thgr;) of journals of the fixed and movable rolls and a movement value Gg(&thgr;+&pgr;) of barrels of the rolls; predicting a movement value Mfcr(&thgr;) of a roll nip of the fixed roll and a movement value Mmer(&thgr;) of a roll nip of the movable roll from the movement values Gj(&thgr;) and Gg(&thgr;+&pgr;); calculating a difference value between the movement values Mfcr(&thgr;) and Mmcr(&thgr;) to obtain an amount of variation Mdiff(&thgr;) of a gap between the fixed and movable rolls; and controlling thickness of a strip to minimize the amount of variation Mdiff(&thgr;) of the gap between the rolls.Type: GrantFiled: August 23, 1999Date of Patent: June 18, 2002Assignees: Pohang Iron & Steel Co., Ltd., Research Institute of Industrial Science & TechnologyInventors: Yoon Ha Kim, Hi Jung Lee, Dae Sung Lee