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公开(公告)号：FI920799A0
公开(公告)日：1992-02-24
申请号：FI920799
申请日：1992-02-24
Applicant: ABB PROCESS AUTOMATION INC
Inventor： DUKES JOHN R
Abstract: A method and apparatus are disclosed wherein a plurality of basis weight sensors are interleaved with one or more processing stations used to conjoin or apply one or more layers to a base substrate to form a multilayer product such that a sensor is located on the input and output sides of each processing station. Each of the sensors can be calibrated with a plurality of product calibrations such that multiple output signals corresponding to multiple products can be generated simultaneously by the sensors. Each of the sensors is calibrated with product calibrations corresponding to the product or intermediate stage of the product which it monitors, the layer applied by the processing station preceding it, if any, and the layer applied by the processing station succeeding it, if any. Signals generated by the sensors may then be used directly to determine the basis weight of the resulting product and/or each intermediate stage of the product, or the signals may be processed to determine the basis weight of each layer of material of the resulting product independent of the substrate to which the layer was applied. Substrate independent layer measurement is performed by subtracting the output signal generated by the sensor preceding the processing station applying the layer based on the product calibration corresponding to the layer from the output signal generated by the sensor succeeding the processing station applying the layer based on the product calibration corresponding to the layer.
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公开(公告)号：CA2038103A1
公开(公告)日：1991-09-28
申请号：CA2038103
申请日：1991-03-12
Applicant: ABB PROCESS AUTOMATION INC
Inventor： BURK GARY N
Abstract: The stack reflectance is predicted from an on-line, wavelength dependent measurement of the sheet reflectance and the on-line measurement of the sheet opacity at a wavelength interval. The stack reflectance Rst is then used to predict and/or control stack color, preferably by using the parameter K/S=(1-Rst2)/2 Rst where K is the dye absorption coefficient and S is the dye scattering coefficient.
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公开(公告)号：CA2036833A1
公开(公告)日：1991-09-08
申请号：CA2036833
申请日：1991-02-21
Applicant: ABB PROCESS AUTOMATION INC
Inventor： CHEN SHIH-CHIN
Abstract: A standard control signal for a web forming machine is temporarily interrupted and replaced by a perturbing signal or signgals which are applied to one, a grouping, or all of a series of actuation cells of the web forming machine. One or more actuation cells are driven with an alternating perturbing signal(s) which generate a corresponding action in the actuation cell(s). The perturbing signal(s) alternates from a neutral position of the cell and is selected to minimize means effects over any given period of time. The effects of the alternating signal(s) on the web appear within the area of the web which is affected by the actuation cell(s) such that the mapping and the response of the actuation cell(s) can be determined by monitoring that poriton of the web which is formed while the alternating signal(s) is applied to the actuation cell(s). The mapping(s) and/or response(s) of the actuation cell(s) are obtained by correlating the perturbing signal(s) and a web property signal or profile signal obtained by monitoring the web formed by the machine. The perturbing signal(s) is defined by a pseudo-random binary sequence with multiple signals being selected to be statistically independent of one another. To ensure that the web is not perturbed beyond defined specifications, the perturbing signal preferably is gradually increased in amplitude and is terminated individually for each actuation cell upon reaching a usable amplitude.
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公开(公告)号：DE69104232D1
公开(公告)日：1994-10-27
申请号：DE69104232
申请日：1991-04-15
Applicant: ABB PROCESS AUTOMATION INC
Inventor： CISSELL THOMAS , DOERSCHUK DAVID , KOESTER KARSTEN , REED GORDON
IPC: F16H49/00
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公开(公告)号：CA2036833C
公开(公告)日：1994-06-28
申请号：CA2036833
申请日：1991-02-21
Applicant: ABB PROCESS AUTOMATION INC
Inventor： CHEN SHIH-CHIN
Abstract: A standard control signal for a web forming machine is temporarily interrupted and replaced by a perturbing signal or signals which are applied to one, a grouping, or all of a series of actuation cells of the web forming machine. One or more actuation cells are driven with an alternating perturbing signal(s) which generate a corresponding action in the actuation cell(s). The perturbing signal(s) alternates from a neutral position of the cell and is selected to minimize mean effects over any given period of time. The effects of the alternating signal(s) on the web appear within the area of the web which is affected by the actuation cell(s) such that the mapping and the response of the actuation cell(s) can be determined by monitoring that portion of the web which is formed while the alternating signal(s) is applied to the actuation cell(s). The mapping(s) and/or response(s) of the actuation cell(s) are obtained by correlating the perturbing signal(s) and a web property signal or profile signal obtained by monitoring the web formed by the machine. The perturbing signal(s) is defined by a pseudo-random binary sequence with multiple signals being selected to be statistically independent of one another. To ensure that the web is not perturbed beyond defined specifications, the perturbing signal preferably is gradually increased in amplitude and is terminated individually for each actuation cell upon reaching a usable amplitude.
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Patent Agency Ranking
公开(公告)号：CA2065018A1
公开(公告)日：1991-02-26
申请号：CA2065018
申请日：1990-08-20
Applicant: ABB PROCESS AUTOMATION INC
Inventor： DUKES JOHN R , THOMPSON MASON L
Abstract: 2065018 9102945 PCTABS00003 Method and apparatus for measurement and control of an industrial process by detecting the average transmittance of a radiation beam which passes through the process material. A radiation source (28) having an intensity Io is positioned on one side of the material to be measured and a suitable radiation detector (32) is positioned on the other side. The transmitted radiation intensity, I, is measured by the sensor. An index Z commensurate with the degree of nonuniformity of the variable in the material is determined, and a process signal is generated from a quantitative relationship among I, Io, and the index Z. In a first embodiment implemented in a system for measurement and control of the basis weight of paper in a paper production process, the index Z is indicative of the nonuniformity of the material mass distribution in the sheet and is determined by measurements with a separate formation gauge operating on-line with, but independently of, the basis weight sensor. In a second embodiment of the invention implemented in such a paper making process, the index Z commensurate with the degree of nonuniformity for the mass in the material, is derived from the standard deviation of the detected radiation intensity signal, or the equivalent standard deviation of the basis weight output signal.
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公开(公告)号：CA2059640A1
公开(公告)日：1991-02-26
申请号：CA2059640
申请日：1990-08-13
Applicant: ABB PROCESS AUTOMATION INC
Inventor： DUKES JOHN R
Abstract: 2059640 9102951 PCTABS00003 A method and apparatus are disclosed wherein a plurality of basis weight sensors (120, 122, 124, 126, 128) are interleaved with one or more processing stations (104, 106, 108) used to conjoin or apply one or more layers (112, 116) to a base substrate (102) to form a multilayer product (118, 110) such that a sensor (120, 122, 124, 126, 128) is located on the input and output sides of each processing station (104, 106, 108). Each of the sensors (120, 122, 124, 126, 128) can be calibrated with a plurality of product calibrations such that multiple output signals corresponding to multiple products can be generated simultaneously by the sensors. Each of the sensors (120, 122, 124, 126, 128) is calibrated with product calibrations corresponding to the product (118, 110) or intermediate stage (114) of the product (118) which it monitors, the layer applied by the processing station preceding it, if any, and the layer applied by the processing station succeeding it, if any. Signals generated by the sensors (120, 122, 124, 126, 128) may then be used directly to determine the basis weight of the resulting product (118) and/or each intermediate stage (114) of the product, or the signals may be processed to determine the basis weight of each layer of material of the resulting product independent of the substrate (102) to which the layer was applied. Substrate independent layer measurement is performed by subtracting the output signal generated by the sensor preceding the processing station applying the layer based on the product calibration corresponding to the layer from the output signal generated by the sensor succeeding the processing station applying the layer based on the product calibration corresponding to the layer.
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公开(公告)号：FI110818B
公开(公告)日：2003-03-31
申请号：FI924319
申请日：1992-09-25
Applicant: ABB PROCESS AUTOMATION INC
Inventor： BURK GARY N
Abstract: The stack reflectance is predicted from an on-line, wavelength dependent measurement of the sheet reflectance and the on-line measurement of the sheet opacity at a wavelength interval. The stack reflectance Rst is then used to predict and/or control stack color, preferably by using the parameter K/S=(1-Rst2)/2 Rst where K is the dye absorption coefficient and S is the dye scattering coefficient.
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公开(公告)号：CA2038103C
公开(公告)日：1996-08-13
申请号：CA2038103
申请日：1991-03-12
Applicant: ABB PROCESS AUTOMATION INC
Inventor： BURK GARY N
Abstract: The stack reflectance is predicted from an on-line, wavelength dependent measurement of the sheet reflectance and the on-line measurement of the sheet opacity at a wavelength interval. The stack reflectance Rst is then used to predict and/or control stack color, preferably by using the parameter K/S = (1-Rst
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公开(公告)号：FI913885A0
公开(公告)日：1991-08-16
申请号：FI913885
申请日：1991-08-16
Applicant: ABB PROCESS AUTOMATION INC
Inventor： REED GORDON K
Abstract: A two-speed stepper actuator unit for use in paper machine headbox slice lip control has a spindle 16 driven by a power nut 24. A lever clamp 32 has legs 34 and 36 selectively clamped together around nut 24 by means of a cam action locking plate 40 driven by solenoid 48. The longer leg 36 of clamp 32 has a cam follower which rotationally drives nut 24 through the lever 36 in response to the shape of a cam plate 50 which translates in the housing 12 on antifriction rollers 66 when drive solenoid 54 is actuated. The cam surface 60 guides the lever 36 in either of two speed modes depending on whether spring biased roller follower 52 is on cams surface portion 62 or 64.
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