Method for a phase angle correction during scanning of a code track
According to the invention, a method for correcting a phase angle when scanning a code track with sensor elements is proposed that delivers a sinusoidal and a cosinusoidal signal, with which the phase difference between two signals is corrected using a specified algorithm. Since the sensor elements...
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| creator | HEISENBERG DAVID |
| description | According to the invention, a method for correcting a phase angle when scanning a code track with sensor elements is proposed that delivers a sinusoidal and a cosinusoidal signal, with which the phase difference between two signals is corrected using a specified algorithm. Since the sensor elements used, e.g., GMR, AMR, or Hall sensor elements, deliver phase-displaced sinusoidal and cosinusoidal signals due to the arrangement of the code tracks, their phases must be corrected before the arctan of the quotient can be calculated. This takes place using an algorithm derived from an arc tangent function. The method according to the invention is used preferably to measure the rotational angle or torque of a steering shaft of a motor vehicle. |
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Since the sensor elements used, e.g., GMR, AMR, or Hall sensor elements, deliver phase-displaced sinusoidal and cosinusoidal signals due to the arrangement of the code tracks, their phases must be corrected before the arctan of the quotient can be calculated. This takes place using an algorithm derived from an arc tangent function. The method according to the invention is used preferably to measure the rotational angle or torque of a steering shaft of a motor vehicle.</description><edition>7</edition><language>eng</language><subject>ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS ; MEASURING ; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE ; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE ; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR ; PHYSICS ; TARIFF METERING APPARATUS ; TESTING</subject><creationdate>2004</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20040122&DB=EPODOC&CC=US&NR=2004015307A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20040122&DB=EPODOC&CC=US&NR=2004015307A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HEISENBERG DAVID</creatorcontrib><title>Method for a phase angle correction during scanning of a code track</title><description>According to the invention, a method for correcting a phase angle when scanning a code track with sensor elements is proposed that delivers a sinusoidal and a cosinusoidal signal, with which the phase difference between two signals is corrected using a specified algorithm. 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Since the sensor elements used, e.g., GMR, AMR, or Hall sensor elements, deliver phase-displaced sinusoidal and cosinusoidal signals due to the arrangement of the code tracks, their phases must be corrected before the arctan of the quotient can be calculated. This takes place using an algorithm derived from an arc tangent function. The method according to the invention is used preferably to measure the rotational angle or torque of a steering shaft of a motor vehicle.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING |
| title | Method for a phase angle correction during scanning of a code track |
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