Proportionally controlled thermochemical mechanical actuator
An operator selects an operating characteristic, such as a degree of extension or force of an extension member (66) of a thermal actuator (16), with an input circuit (10). The input control circuit generates a reference signal. A feedback circuit (18) monitors a characteristic of the thermal actuato...
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| creator | SCHNEIDER EDWARD T JAVOR KENNETH A |
| description | An operator selects an operating characteristic, such as a degree of extension or force of an extension member (66) of a thermal actuator (16), with an input circuit (10). The input control circuit generates a reference signal. A feedback circuit (18) monitors a characteristic of the thermal actuator such as a temperature of its internal polymer, extension of the extension member, force, or the like, and generates a corresponding feedback signal. An error circuit (12) compares the reference and feedback signals and generates an error signal in accordance therewith. A dither circuit (30) generates an oscillating dither signal that is superimposed on one of the control and feedback signals before comparison by the error circuit. A power conversion circuit (14) adjusts an amount of electrical power supplied to a heating element (54) of the thermal actuator in accordance with the error signal. |
| format | Patent |
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The input control circuit generates a reference signal. A feedback circuit (18) monitors a characteristic of the thermal actuator such as a temperature of its internal polymer, extension of the extension member, force, or the like, and generates a corresponding feedback signal. An error circuit (12) compares the reference and feedback signals and generates an error signal in accordance therewith. A dither circuit (30) generates an oscillating dither signal that is superimposed on one of the control and feedback signals before comparison by the error circuit. A power conversion circuit (14) adjusts an amount of electrical power supplied to a heating element (54) of the thermal actuator in accordance with the error signal.</description><edition>6</edition><language>eng</language><subject>BLASTING ; CONTROLLING ; HEATING ; LIGHTING ; MACHINES OR ENGINES FOR LIQUIDS ; MECHANICAL ENGINEERING ; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOTOTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISEPROVIDED FOR ; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR ; PHYSICS ; PRODUCING MECHANICAL POWER ; REGULATING ; SPRING, WEIGHT, INERTIA OR LIKE MOTORS ; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES ; WEAPONS ; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS</subject><creationdate>1997</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=19971111&DB=EPODOC&CC=US&NR=5685149A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19971111&DB=EPODOC&CC=US&NR=5685149A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SCHNEIDER; EDWARD T</creatorcontrib><creatorcontrib>JAVOR; KENNETH A</creatorcontrib><title>Proportionally controlled thermochemical mechanical actuator</title><description>An operator selects an operating characteristic, such as a degree of extension or force of an extension member (66) of a thermal actuator (16), with an input circuit (10). The input control circuit generates a reference signal. A feedback circuit (18) monitors a characteristic of the thermal actuator such as a temperature of its internal polymer, extension of the extension member, force, or the like, and generates a corresponding feedback signal. An error circuit (12) compares the reference and feedback signals and generates an error signal in accordance therewith. A dither circuit (30) generates an oscillating dither signal that is superimposed on one of the control and feedback signals before comparison by the error circuit. A power conversion circuit (14) adjusts an amount of electrical power supplied to a heating element (54) of the thermal actuator in accordance with the error signal.</description><subject>BLASTING</subject><subject>CONTROLLING</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MACHINES OR ENGINES FOR LIQUIDS</subject><subject>MECHANICAL ENGINEERING</subject><subject>MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOTOTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISEPROVIDED FOR</subject><subject>OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR</subject><subject>PHYSICS</subject><subject>PRODUCING MECHANICAL POWER</subject><subject>REGULATING</subject><subject>SPRING, WEIGHT, INERTIA OR LIKE MOTORS</subject><subject>SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES</subject><subject>WEAPONS</subject><subject>WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1997</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLAJKMovyC8qyczPS8zJqVRIzs8rKcrPyUlNUSjJSC3KzU_OSM3NTE7MUchNTc5IzAMzE5NLShNL8ot4GFjTEnOKU3mhNDeDvJtriLOHbmpBfnxqcUFicmpeakl8aLCpmYWpoYmlozFhFQDEWjBq</recordid><startdate>19971111</startdate><enddate>19971111</enddate><creator>SCHNEIDER; EDWARD T</creator><creator>JAVOR; KENNETH A</creator><scope>EVB</scope></search><sort><creationdate>19971111</creationdate><title>Proportionally controlled thermochemical mechanical actuator</title><author>SCHNEIDER; EDWARD T ; JAVOR; KENNETH A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US5685149A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1997</creationdate><topic>BLASTING</topic><topic>CONTROLLING</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MACHINES OR ENGINES FOR LIQUIDS</topic><topic>MECHANICAL ENGINEERING</topic><topic>MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOTOTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISEPROVIDED FOR</topic><topic>OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR</topic><topic>PHYSICS</topic><topic>PRODUCING MECHANICAL POWER</topic><topic>REGULATING</topic><topic>SPRING, WEIGHT, INERTIA OR LIKE MOTORS</topic><topic>SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES</topic><topic>WEAPONS</topic><topic>WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS</topic><toplevel>online_resources</toplevel><creatorcontrib>SCHNEIDER; EDWARD T</creatorcontrib><creatorcontrib>JAVOR; KENNETH A</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SCHNEIDER; EDWARD T</au><au>JAVOR; KENNETH A</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Proportionally controlled thermochemical mechanical actuator</title><date>1997-11-11</date><risdate>1997</risdate><abstract>An operator selects an operating characteristic, such as a degree of extension or force of an extension member (66) of a thermal actuator (16), with an input circuit (10). The input control circuit generates a reference signal. A feedback circuit (18) monitors a characteristic of the thermal actuator such as a temperature of its internal polymer, extension of the extension member, force, or the like, and generates a corresponding feedback signal. An error circuit (12) compares the reference and feedback signals and generates an error signal in accordance therewith. A dither circuit (30) generates an oscillating dither signal that is superimposed on one of the control and feedback signals before comparison by the error circuit. A power conversion circuit (14) adjusts an amount of electrical power supplied to a heating element (54) of the thermal actuator in accordance with the error signal.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING CONTROLLING HEATING LIGHTING MACHINES OR ENGINES FOR LIQUIDS MECHANICAL ENGINEERING MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOTOTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISEPROVIDED FOR OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PHYSICS PRODUCING MECHANICAL POWER REGULATING SPRING, WEIGHT, INERTIA OR LIKE MOTORS SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES WEAPONS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS |
| title | Proportionally controlled thermochemical mechanical actuator |
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