Gimbal control system
A multi-loop control system for a gimballed antenna that employs devices for measuring both absolute line-of-sight (an autotrack receiver or beacon tracker) and relative angular position (a resolver). The control system uses both signals simultaneously, thereby increasing the performance and pointin...
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| creator | BENDER DOUGLAS J BOCKMAN STUART F EYERLY BRUCE N ANAGNOST JOHN J |
| description | A multi-loop control system for a gimballed antenna that employs devices for measuring both absolute line-of-sight (an autotrack receiver or beacon tracker) and relative angular position (a resolver). The control system uses both signals simultaneously, thereby increasing the performance and pointing accuracy capability. Two control loops operate simultaneously to provide for optimum performance. The first loop is an inner high-bandwidth control loop that uses the relative gimbal angle measurement to control pointing of the antenna along a precommanded profile. The inner loop may run alone to provide for coarse pointing. When available, the line-of sight measurement is used in a low-bandwidth outer loop to provide corrections to the command profile of the inner loop. Control logic is provided that allows switching between several control modes. By using the present invention, antenna tracking control performance is maximized, especially in the presence of attitude disturbances of a spacecraft or significant flexible interactions. |
| format | Patent |
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The control system uses both signals simultaneously, thereby increasing the performance and pointing accuracy capability. Two control loops operate simultaneously to provide for optimum performance. The first loop is an inner high-bandwidth control loop that uses the relative gimbal angle measurement to control pointing of the antenna along a precommanded profile. The inner loop may run alone to provide for coarse pointing. When available, the line-of sight measurement is used in a low-bandwidth outer loop to provide corrections to the command profile of the inner loop. Control logic is provided that allows switching between several control modes. By using the present invention, antenna tracking control performance is maximized, especially in the presence of attitude disturbances of a spacecraft or significant flexible interactions.</description><edition>6</edition><language>eng</language><subject>AIRCRAFT ; ANALOGOUS ARRANGEMENTS USING OTHER WAVES ; ANTENNAS, i.e. RADIO AERIALS ; AVIATION ; BASIC ELECTRIC ELEMENTS ; COSMONAUTICS ; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ; ELECTRICITY ; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES ; MEASURING ; PERFORMING OPERATIONS ; PHYSICS ; RADIO DIRECTION-FINDING ; RADIO NAVIGATION ; TESTING ; TRANSPORTING ; VEHICLES OR EQUIPMENT THEREFOR</subject><creationdate>1996</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=19960917&DB=EPODOC&CC=US&NR=5557285A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19960917&DB=EPODOC&CC=US&NR=5557285A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>BENDER; DOUGLAS J</creatorcontrib><creatorcontrib>BOCKMAN; STUART F</creatorcontrib><creatorcontrib>EYERLY; BRUCE N</creatorcontrib><creatorcontrib>ANAGNOST; JOHN J</creatorcontrib><title>Gimbal control system</title><description>A multi-loop control system for a gimballed antenna that employs devices for measuring both absolute line-of-sight (an autotrack receiver or beacon tracker) and relative angular position (a resolver). The control system uses both signals simultaneously, thereby increasing the performance and pointing accuracy capability. Two control loops operate simultaneously to provide for optimum performance. The first loop is an inner high-bandwidth control loop that uses the relative gimbal angle measurement to control pointing of the antenna along a precommanded profile. The inner loop may run alone to provide for coarse pointing. When available, the line-of sight measurement is used in a low-bandwidth outer loop to provide corrections to the command profile of the inner loop. Control logic is provided that allows switching between several control modes. By using the present invention, antenna tracking control performance is maximized, especially in the presence of attitude disturbances of a spacecraft or significant flexible interactions.</description><subject>AIRCRAFT</subject><subject>ANALOGOUS ARRANGEMENTS USING OTHER WAVES</subject><subject>ANTENNAS, i.e. RADIO AERIALS</subject><subject>AVIATION</subject><subject>BASIC ELECTRIC ELEMENTS</subject><subject>COSMONAUTICS</subject><subject>DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES</subject><subject>ELECTRICITY</subject><subject>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</subject><subject>MEASURING</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICS</subject><subject>RADIO DIRECTION-FINDING</subject><subject>RADIO NAVIGATION</subject><subject>TESTING</subject><subject>TRANSPORTING</subject><subject>VEHICLES OR EQUIPMENT THEREFOR</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1996</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZBB1z8xNSsxRSM7PKynKz1EoriwuSc3lYWBNS8wpTuWF0twM8m6uIc4euqkF-fGpxQWJyal5qSXxocGmpqbmRhamjsaEVQAAAnggog</recordid><startdate>19960917</startdate><enddate>19960917</enddate><creator>BENDER; DOUGLAS J</creator><creator>BOCKMAN; STUART F</creator><creator>EYERLY; BRUCE N</creator><creator>ANAGNOST; JOHN J</creator><scope>EVB</scope></search><sort><creationdate>19960917</creationdate><title>Gimbal control system</title><author>BENDER; DOUGLAS J ; BOCKMAN; STUART F ; EYERLY; BRUCE N ; ANAGNOST; JOHN J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US5557285A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1996</creationdate><topic>AIRCRAFT</topic><topic>ANALOGOUS ARRANGEMENTS USING OTHER WAVES</topic><topic>ANTENNAS, i.e. RADIO AERIALS</topic><topic>AVIATION</topic><topic>BASIC ELECTRIC ELEMENTS</topic><topic>COSMONAUTICS</topic><topic>DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES</topic><topic>ELECTRICITY</topic><topic>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</topic><topic>MEASURING</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICS</topic><topic>RADIO DIRECTION-FINDING</topic><topic>RADIO NAVIGATION</topic><topic>TESTING</topic><topic>TRANSPORTING</topic><topic>VEHICLES OR EQUIPMENT THEREFOR</topic><toplevel>online_resources</toplevel><creatorcontrib>BENDER; DOUGLAS J</creatorcontrib><creatorcontrib>BOCKMAN; STUART F</creatorcontrib><creatorcontrib>EYERLY; BRUCE N</creatorcontrib><creatorcontrib>ANAGNOST; JOHN J</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>BENDER; DOUGLAS J</au><au>BOCKMAN; STUART F</au><au>EYERLY; BRUCE N</au><au>ANAGNOST; JOHN J</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Gimbal control system</title><date>1996-09-17</date><risdate>1996</risdate><abstract>A multi-loop control system for a gimballed antenna that employs devices for measuring both absolute line-of-sight (an autotrack receiver or beacon tracker) and relative angular position (a resolver). The control system uses both signals simultaneously, thereby increasing the performance and pointing accuracy capability. Two control loops operate simultaneously to provide for optimum performance. The first loop is an inner high-bandwidth control loop that uses the relative gimbal angle measurement to control pointing of the antenna along a precommanded profile. The inner loop may run alone to provide for coarse pointing. When available, the line-of sight measurement is used in a low-bandwidth outer loop to provide corrections to the command profile of the inner loop. Control logic is provided that allows switching between several control modes. By using the present invention, antenna tracking control performance is maximized, especially in the presence of attitude disturbances of a spacecraft or significant flexible interactions.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | AIRCRAFT ANALOGOUS ARRANGEMENTS USING OTHER WAVES ANTENNAS, i.e. RADIO AERIALS AVIATION BASIC ELECTRIC ELEMENTS COSMONAUTICS DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRICITY LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PERFORMING OPERATIONS PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING TRANSPORTING VEHICLES OR EQUIPMENT THEREFOR |
| title | Gimbal control system |
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