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公开(公告)号：JP2002156296A
公开(公告)日：2002-05-31
申请号：JP2001298517
申请日：2001-09-27
Applicant: ABB AB
Inventor： SHAHCHERAGHI ROOZBEH , SOBEL JARL , BLOMKVIST KENT , LING HANS
IPC: G01L3/10
Abstract: PROBLEM TO BE SOLVED: To provide a torque converter capable of selecting the material of converting shaft independently from the magnetic characteristics of the material. SOLUTION: The torque converter whose magnetoelastic region 2 formed in a cylinder shape is permanently magnetized in the azimuth direction and has a converting shaft 1 arranged together with a magnetoelastic region 2 formed in cylinder fixed around the cylinder of the converting shaft 1. The converting shaft 1 provided with the magnetoelastic region 2 formed in cylinder is surrounded by a winding 4 supplied by alternating current. The winding 4 is connected to a phase detector 5. With this invention, magnetism and a nonlinear ferromagnetic material 3' physically contact the magnetoelastic region 2 formed in cylinder.
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公开(公告)号：AT500487T
公开(公告)日：2011-03-15
申请号：AT06124619
申请日：2006-11-23
Applicant: ABB AB
Inventor： SOBEL JARL
IPC: G01B7/06
Abstract: A dimension-gauging system (1) to determine at least one dimension (d) of a nonferrous, electrically conducting object (5) produces a magnetic field (8) inside the object (5) and changes the excitation (X) of the magnetic field. A signal processing unit (11) measures the reaction (9, 10) of the magnetic field to the change in excitation (X), obtains an actual field transfer function (H) between the excitation (X) and the measured field reaction (Y A , Y B ) and determines the at least one dimension (d) of the object (5) by fitting the measured field transfer function (H) to a predetermined field transfer function (G(d)), where the predetermined field transfer function (G(d)) represents the dynamic behaviour between the excitation (X) and the measured field reaction (Y A , Y B ) with the one dimension (d) as a parameter
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公开(公告)号：ES2183976T3
公开(公告)日：2003-04-01
申请号：ES96935724
申请日：1996-10-18
Applicant: ABB AB
Inventor： SOBEL JARL
IPC: G01L3/10
Abstract: PCT No. PCT/SE96/01326 Sec. 371 Date May 29, 1998 Sec. 102(e) Date May 29, 1998 PCT Filed Oct. 18, 1996 PCT Pub. No. WO97/22866 PCT Pub. Date Jun. 26, 1997A torque transducer comprising a shaft (1) with a circularly polarized ring (2) which, when loading the shaft with a torque, generates an axial static magnetic field in the shaft and wherein the ring is concentrically surrounded by a stationary tubular shell (3) which is freely arranged in relation to the shaft and which is provided with at least one winding (4, 8, 9) for magnetization of the shaft with a given frequency. A phase-sensitive detector (5) connected to the winding supplies a signal corresponding to the content of those voltages with even harmonics which are induced in the winding to the frequency of a controller (6). The controller generates a direct current which is proportional to the signal and is connected to the winding with such a polarity that it counteracts the static magnetic field generated in the shaft. This direct current constitutes a measure of the torque with which the shaft is loaded.
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公开(公告)号：DE69708089T2
公开(公告)日：2002-08-29
申请号：DE69708089
申请日：1997-06-19
Applicant: ABB AB VAESTERAAS
Inventor： JEREMIASSON JAN , SOBEL JARL , WALLIN CHRISTER
Abstract: PCT No. PCT/SE97/01120 Sec. 371 Date Feb. 8, 1999 Sec. 102(e) Date Feb. 8, 1999 PCT Filed Jun. 19, 1997 PCT Pub. No. WO97/48894 PCT Pub. Date Dec. 24, 1997A method for detection of misfiring of an internal combustion engine, wherein the torque of the internal combustion engine is measured with the aid of a torque sensor mounted on the crankshaft of the internal combustion engine and wherein a torque signal is sampled speed-synchronously with the aid of a sensor. A digital filtering of the torque signal is carried out with a digital filter with a finite impulse response which blocks or damps a selection of integer or half-integer multiples of the speed of the internal combustion engine. The selection of speed multiples is substantially dependent on the number of cylinders of the internal combustion engine.
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公开(公告)号：DE69519227T2
公开(公告)日：2001-06-07
申请号：DE69519227
申请日：1995-03-22
Applicant: ABB AB VAESTERAAS
Inventor： LING HANS , SOBEL JARL , UGGLA J
Abstract: PCT No. PCT/SE95/00289 Sec. 371 Date Sep. 4, 1996 Sec. 102(e) Date Sep. 4, 1996 PCT Filed Mar. 22, 1995 PCT Pub. No. WO95/27191 PCT Pub. Date Oct. 12, 1995A magnetoelastic torque transducer for measuring, in a non-contacting manner, the torque in a stationary or a rotating shaft. The transducer comprises a shaft (1) with surrounding excitation windings (2, 3) and measuring windings (10, 11). Concentrically with the windings, anisotropic measuring zones are created by applying layers (8, 9), for example in the form of copper strips, on the surface of the shaft. The angle between the strips and a generatrix to the cylinder surface of the transducer shaft is in a preferred embodiment chosen to be +/-45 DEG (FIG. 5).
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Patent Agency Ranking
公开(公告)号：AU3993300A
公开(公告)日：2000-10-23
申请号：AU3993300
申请日：2000-03-24
Applicant: ABB AB
Inventor： SOBEL JARL
Abstract: A method and a system for phase sensitive rectification of signals from transducers driven by an AC excitation signal will be disclosed. The method and system demand a very moderate calculation capacity, thereby to facilitate the use of low cost microprocessors of ordinary speed. The present method and system utilize a sampling being synchronized with the transducer excitation frequency f. Sampling of the sensor signal is performed by an A/D-converter at a high sampling frequency, nf. The sampled signal then is averaged over half a period of the excitation signal frequency, whereby the starting point of the averaging is decided by the time of commutation. This is equal to filtering the sampled signal by a decimating filter. The rectification may then may be preformed with a number sequence sampled by the optimal sampling frequency 2f (twice the excitation frequency only) instead of the sampling frequency nf used for obtaining high resolution. The output then is further filtered by means of a digital filter acting as an ideal low-pass filter as well as an output filter for achieving a desired output signal level. The signal output will be then be simply made available for further digital processing. However, the output still offers high resolution measurements in spite of only demanding moderate speed microprocessor capacity for the processing.
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公开(公告)号：AT428850T
公开(公告)日：2009-05-15
申请号：AT02736409
申请日：2002-06-06
Applicant: ABB AB
Inventor： SOBEL JARL
Abstract: A method and apparatus for accurately determining TDC in a cylinder of an internal combustion engine. Gas pressure is measured in the cylinder relative to crank angle, giving rise to a curve of gas pressure with crank angle. An offset is found by first computing the angular position of an inflexion point of the compression pressure curve measured as a function of the crank angle, and then computing the offset as the difference between the angular position of a piston in the cylinder and a theoretical value for said angular position of the piston dependent on a known or measured flywheel angle. The value of TDC corrected by the offset is then used to calculate a value of work output such as the Indicated Mean Effective Pressure (IMEP) which may be used for diagnostic and/or control purposes.
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公开(公告)号：AT356345T
公开(公告)日：2007-03-15
申请号：AT00919227
申请日：2000-03-24
Applicant: ABB AB
Inventor： SOBEL JARL
Abstract: A method and a system for phase sensitive rectification of signals from transducers driven by an AC excitation signal will be disclosed. The method and system demand a very moderate calculation capacity, thereby to facilitate the use of low cost microprocessors of ordinary speed. The present method and system utilize a sampling being synchronized with the transducer excitation frequency f. Sampling of the sensor signal is performed by an A/D-converter at a high sampling frequency, nf. The sampled signal then is averaged over half a period of the excitation signal frequency, whereby the starting point of the averaging is decided by the time of commutation. This is equal to filtering the sampled signal by a decimating filter. The rectification may then may be preformed with a number sequence sampled by the optimal sampling frequency 2f (twice the excitation frequency only) instead of the sampling frequency nf used for obtaining high resolution. The output then is further filtered by means of a digital filter acting as an ideal low-pass filter as well as an output filter for achieving a desired output signal level. The signal output will be then be simply made available for further digital processing. However, the output still offers high resolution measurements in spite of only demanding moderate speed microprocessor capacity for the processing.
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公开(公告)号：DE60033797T2
公开(公告)日：2007-11-15
申请号：DE60033797
申请日：2000-03-24
Applicant: ABB AB
Inventor： SOBEL JARL
Abstract: A method and a system for phase sensitive rectification of signals from transducers driven by an AC excitation signal will be disclosed. The method and system demand a very moderate calculation capacity, thereby to facilitate the use of low cost microprocessors of ordinary speed. The present method and system utilize a sampling being synchronized with the transducer excitation frequency f. Sampling of the sensor signal is performed by an A/D-converter at a high sampling frequency, nf. The sampled signal then is averaged over half a period of the excitation signal frequency, whereby the starting point of the averaging is decided by the time of commutation. This is equal to filtering the sampled signal by a decimating filter. The rectification may then may be preformed with a number sequence sampled by the optimal sampling frequency 2f (twice the excitation frequency only) instead of the sampling frequency nf used for obtaining high resolution. The output then is further filtered by means of a digital filter acting as an ideal low-pass filter as well as an output filter for achieving a desired output signal level. The signal output will be then be simply made available for further digital processing. However, the output still offers high resolution measurements in spite of only demanding moderate speed microprocessor capacity for the processing.
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公开(公告)号：DE60033797D1
公开(公告)日：2007-04-19
申请号：DE60033797
申请日：2000-03-24
Applicant: ABB AB
Inventor： SOBEL JARL
Abstract: A method and a system for phase sensitive rectification of signals from transducers driven by an AC excitation signal will be disclosed. The method and system demand a very moderate calculation capacity, thereby to facilitate the use of low cost microprocessors of ordinary speed. The present method and system utilize a sampling being synchronized with the transducer excitation frequency f. Sampling of the sensor signal is performed by an A/D-converter at a high sampling frequency, nf. The sampled signal then is averaged over half a period of the excitation signal frequency, whereby the starting point of the averaging is decided by the time of commutation. This is equal to filtering the sampled signal by a decimating filter. The rectification may then may be preformed with a number sequence sampled by the optimal sampling frequency 2f (twice the excitation frequency only) instead of the sampling frequency nf used for obtaining high resolution. The output then is further filtered by means of a digital filter acting as an ideal low-pass filter as well as an output filter for achieving a desired output signal level. The signal output will be then be simply made available for further digital processing. However, the output still offers high resolution measurements in spite of only demanding moderate speed microprocessor capacity for the processing.
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