Distributed active vibration control systems and rotary wing aircraft with suppressed vibrations
First Claim
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1. An aircraft, said aircraft comprised of a nonrotating vehicle structure, said nonrotating vehicle structure including a plurality of distributed active vibration control system sites, with said aircraft including:
- at least a first distributed active vibration circular force generator, said first distributed active vibration circular force generator fixed to said nonrotating vehicle structure at a first distributed active vibration control system site,at least a second distributed active vibration circular force generator, said second distributed active vibration circular force generator fixed to said nonrotating vehicle structure at a second distributed active vibration control system site,a plurality of electrical power distribution lines, said electrical power distribution lines connecting said circular force generators with a power source,a distributed circular force generator data communications network, said distributed circular force generator data communications network linking together at least said first distributed active vibration circular force generator and at least said second distributed active vibration circular force generator, with at least said first distributed active vibration circular force generator and at least said second distributed active vibration circular force generator communicating circular force generator vibration control data through said distributed force generator data communications network independently of said electrical power distribution lines, with said first distributed active vibration circular force generator and said second distributed active vibration circular force generator outputting circular forces into said nonrotating vehicle structure to minimize a plurality of troublesome vibrations.
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Abstract
A method and system is disclosed for controlling problematic vibrations in an aircraft having. The method and system have the ability to cancel problematic rotary wing helicopter vibrations using independent active force generator power and with distributed communications therebetween.
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Citations
20 Claims
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1. An aircraft, said aircraft comprised of a nonrotating vehicle structure, said nonrotating vehicle structure including a plurality of distributed active vibration control system sites, with said aircraft including:
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at least a first distributed active vibration circular force generator, said first distributed active vibration circular force generator fixed to said nonrotating vehicle structure at a first distributed active vibration control system site, at least a second distributed active vibration circular force generator, said second distributed active vibration circular force generator fixed to said nonrotating vehicle structure at a second distributed active vibration control system site, a plurality of electrical power distribution lines, said electrical power distribution lines connecting said circular force generators with a power source, a distributed circular force generator data communications network, said distributed circular force generator data communications network linking together at least said first distributed active vibration circular force generator and at least said second distributed active vibration circular force generator, with at least said first distributed active vibration circular force generator and at least said second distributed active vibration circular force generator communicating circular force generator vibration control data through said distributed force generator data communications network independently of said electrical power distribution lines, with said first distributed active vibration circular force generator and said second distributed active vibration circular force generator outputting circular forces into said nonrotating vehicle structure to minimize a plurality of troublesome vibrations. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of making a vibration control system for suppressing troublesome vibrations in a structure with at least one rotating machine creating troublesome vibrations, said method comprising:
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providing at least a first distributed active vibration circular force generator, said first distributed active vibration circular force generator including a first distributed electronic control system, fixing said first distributed active vibration circular force generator to said structure at a first distributed active vibration control system site, providing at least a second distributed active vibration circular force generator, said second distributed active vibration circular force generator including a second distributed electronic control system, fixing said second distributed active vibration circular force generator to said structure at a second distributed active vibration control system site, connecting said at least first and second circular force generators with a plurality of electrical power distribution lines to a power source, providing a distributed force generator data communications network, said distributed force generator data communications network linking together said at least first and second distributed electronic control systems, communicating force generator vibration control data through said distributed force generator data communications network independently of said electrical power distribution lines to generate circular forces to minimize said troublesome vibrations. - View Dependent Claims (9, 10, 11, 12)
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13. A vehicle vibration control system for suppressing troublesome vehicle vibrations in a vehicle structure connected with at least one rotating machine creating troublesome vibrations in said vehicle structure, said vehicle vibration control system including:
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at least a first distributed active vibration circular force generator, said first distributed active vibration circular force generator including a first distributed electronic control system and a first rotating mass, said first distributed active vibration circular force generator for fixing to said vehicle structure at a first distributed active vibration control system site, at least a second distributed active vibration circular force generator, said second distributed active vibration circular force generator including a second distributed electronic control system and a second rotating mass, said second distributed active vibration circular force generator for fixing to said vehicle structure at a second distributed active vibration control system site, a plurality of electrical power distribution lines, said electrical power distribution lines for connecting said first distributed active vibration circular force generator and said second distributed active vibration circular force generator with a power source, a distributed force generator data communications network, said distributed force generator data communications network for linking together said at least first and second distributed electronic control systems wherein said distributed electronic control systems communicate circular force generator vibration control data through said distributed force generator data communications network independently of said electrical power distribution lines to minimize said troublesome vibrations. - View Dependent Claims (14, 15)
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16. A method of suppressing a plurality of vibrations, said method comprising:
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providing a structure, providing at least a first distributed active vibration electromagnetic force generator, said first distributed active vibration electromagnetic force generator including a first distributed electronic control system and at least a first electromagnetically driven mass, fixing said first distributed active vibration electromagnetic force generator to said structure at a first distributed active vibration control system site, providing at least a second distributed active vibration electromagnetic force generator, said second distributed active vibration electromagnetic force generator including a second distributed electronic control system and at least a second electromagnetically driven mass, fixing said second distributed active vibration electromagnetic force generator to said structure at a second distributed active vibration control system site, connecting said at least first electromagnetic force generator and said at least second electromagnetic force generator to a power source to provide an electromagnetic source of power, providing a distributed force generator data communications network, said distributed force generator data communications network linking together said at least first distributed electronic control system and said at least second distributed electronic control system, communicating force generator vibration control data through said distributed force generator data communications network independently of said electromagnetic source of power to minimize said vibrations. - View Dependent Claims (17, 18, 19, 20)
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Specification