DAMPING CIRCUIT FOR EXCAVATOR MULTI-MOTOR LOAD SHARING SWING DRIVE
The swing drive motor armatures on an excavator are connected in alternate fashion with the armatures of their associated generators to form a sandwiched loop. Sets of nodes which are at the same potential under steady state conditions are thus formed in the loop and a damping resistor is connected...
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| creator | JONES B,US |
| description | The swing drive motor armatures on an excavator are connected in alternate fashion with the armatures of their associated generators to form a sandwiched loop. Sets of nodes which are at the same potential under steady state conditions are thus formed in the loop and a damping resistor is connected between a pair of these equal-potential nodes to conduct current when oscillations occur in the mechanical portion of the swing drive. As a result, the swing drive motors generate output torques which oppose and damp these oscillations. Alternative arrangements are shown in which four motor armatures and four generator armatures are connected in a single sandwiched loop, or in which a pair of sandwiched loops are formed with two motor armatures and two generator armatures in each loop. |
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Sets of nodes which are at the same potential under steady state conditions are thus formed in the loop and a damping resistor is connected between a pair of these equal-potential nodes to conduct current when oscillations occur in the mechanical portion of the swing drive. As a result, the swing drive motors generate output torques which oppose and damp these oscillations. Alternative arrangements are shown in which four motor armatures and four generator armatures are connected in a single sandwiched loop, or in which a pair of sandwiched loops are formed with two motor armatures and two generator armatures in each loop.</description><language>eng</language><subject>CALCULATING ; COMPUTING ; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS ; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; COUNTING ; ELECTRICITY ; GENERATION ; HANDLING RECORD CARRIERS ; PHYSICS ; PRESENTATION OF DATA ; RECOGNITION OF DATA ; RECORD CARRIERS</subject><creationdate>1974</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=19740423&DB=EPODOC&CC=US&NR=3806780A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19740423&DB=EPODOC&CC=US&NR=3806780A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>JONES B,US</creatorcontrib><title>DAMPING CIRCUIT FOR EXCAVATOR MULTI-MOTOR LOAD SHARING SWING DRIVE</title><description>The swing drive motor armatures on an excavator are connected in alternate fashion with the armatures of their associated generators to form a sandwiched loop. Sets of nodes which are at the same potential under steady state conditions are thus formed in the loop and a damping resistor is connected between a pair of these equal-potential nodes to conduct current when oscillations occur in the mechanical portion of the swing drive. As a result, the swing drive motors generate output torques which oppose and damp these oscillations. 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Sets of nodes which are at the same potential under steady state conditions are thus formed in the loop and a damping resistor is connected between a pair of these equal-potential nodes to conduct current when oscillations occur in the mechanical portion of the swing drive. As a result, the swing drive motors generate output torques which oppose and damp these oscillations. Alternative arrangements are shown in which four motor armatures and four generator armatures are connected in a single sandwiched loop, or in which a pair of sandwiched loops are formed with two motor armatures and two generator armatures in each loop.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CALCULATING COMPUTING CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER COUNTING ELECTRICITY GENERATION HANDLING RECORD CARRIERS PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS |
| title | DAMPING CIRCUIT FOR EXCAVATOR MULTI-MOTOR LOAD SHARING SWING DRIVE |
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