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公开(公告)号：FI920800A0
公开(公告)日：1992-02-24
申请号：FI920800
申请日：1992-02-24
Applicant: ABB PROCESS AUTOMATION INC
Inventor： DUKES JOHN ROBERT , THOMPSON MASON LEE
Abstract: 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 implementedd 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：FI914722A0
公开(公告)日：1991-10-07
申请号：FI914722
申请日：1991-10-07
Applicant: ABB PROCESS AUTOMATION INC
Inventor： REED GORDON K
Abstract: A paper machine headbox slice lip rotector system which permits limited incremental movement up or down by means of a pivoting lever arm 32 with lock bolt end portions 36 and 38 moving in adjacent protectors' adjustable keeper recesses 40. The recesses 40 are defined by stop nuts 42 on a threaded body fixed to the adjustable spindles 20. The lever arm 32 is pivotally mounted on the body for permitting up and down movement a distance which is the average of the distance defined by the keeper recesses 40 of the adjacent protectors. This prevents the prior art problem of a protector being "locked" between adjacent protectors.
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公开(公告)号：CA2050489A1
公开(公告)日：1990-10-08
申请号：CA2050489
申请日：1990-03-15
Applicant: ABB PROCESS AUTOMATION INC
Inventor： REED GORDON K
Abstract: 2050489 9012149 PCTABS00002 A paper machine headbox slice lip protector system which permits limited imcremental movement up or down by means of a pivoting lever arm (32) with lock bolt end portions (36 and 38) moving in adjacent protectors' adjustable keeper recesses (40). The recesses (40) are defined by stop nuts (42) on a threaded body fixed to the adjustable spindles (20). The lever arm (32) is pivotally mounted on the body for permitting up and down movement a distance which is the average of the distance defined by the keeper recesses (40) of the adjacent protectors. This prevents the prior art problem of a protector being "locked" between adjacent protectors.
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公开(公告)号：CA2100772C
公开(公告)日：1995-01-31
申请号：CA2100772
申请日：1991-04-15
Applicant: ABB PROCESS AUTOMATION INC
Inventor： CISSELL THOMAS J , DOERSCHUK DAVID C , KOESTER KARSTEN G , REED GORDON K
Abstract: A pneumatic stepper motor weight actuator (7) captures the advantages of polymeric harmonic gears while occupying less space and eliminating the problems associated with air entrapment in the stator grooves (31, 49). Air entrapment is eliminated by providing orificed air passages (47) from the bottom of the longitudinal stator grooves (31) to the center stator hole (45). Advantageously, the actuator (7) includes a rigid gear (23) comprising a toothed polymeric sleeve (61) adhesively bonded inside a metal cup (63).
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公开(公告)号：FI923997A0
公开(公告)日：1992-09-07
申请号：FI923997
申请日：1992-09-07
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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Patent Agency Ranking
公开(公告)号：CA2048656A1
公开(公告)日：1990-08-18
申请号：CA2048656
申请日：1990-02-05
Applicant: ABB PROCESS AUTOMATION INC
Inventor： REED GORDON K
Abstract: 2048656 9009696 PCTABS00001 A two-speed stepper actuator unit (10) for use in paper machine headbox (9) slice lip (80) 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 cam surface portion (62 or 64).
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公开(公告)号：FI933239A
公开(公告)日：1993-07-16
申请号：FI933239
申请日：1993-07-16
Applicant: ABB PROCESS AUTOMATION INC
Inventor： CISSELL THOMAS JOSEPH , DOERSCHUK DAVID CAPPEL , KOESTER KARSTEN GEORGE , REED GORDON KENNETH
IPC: F16H49/00
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公开(公告)号：DE3871936T2
公开(公告)日：1993-01-14
申请号：DE3871936
申请日：1988-12-05
Applicant: ABB PROCESS AUTOMATION INC
Inventor： WILLIAMS PAUL
IPC: G01B20060101 , G01B7/06 , G01B7/10
Abstract: A contacting thickness gauge comprising a unique surface follower (46). The bottom surface (56) of the surface follower (46) has both contacting areas (64,66) and non-contacting areas (62). The surface follower (46) is in substantially continuous contact with a moving sheet (2) and embodies an electrically conductive target having a target surface that intersects a magnetic field but is substantially free from contact with the sheet during normal operation. The surface follower (46) is designed to minimize damage to the sheet (2) that would otherwise occur from contact between the surface follower and a protruberance of the sheet, and to preserve the characteristics of the target surface.
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公开(公告)号：FI924319A
公开(公告)日：1992-09-25
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：FI923997A
公开(公告)日：1992-09-07
申请号：FI923997
申请日：1992-09-07
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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