Helicopter vibration control system and circular force generation systems for canceling vibrations

Patent metadata

Field	Value
Publication number	US-9776712-B2
Application number	US-201514728688-A
Country	US
Kind code	B2
Filing date	Jun 2, 2015
Priority date	Aug 30, 2005
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

A rotary wing aircraft including a vehicle vibration control system. The vehicle vibration control system includes a rotary wing aircraft member sensor for outputting rotary wing aircraft member data correlating to the relative rotation of the rotating rotary wing hub member rotating relative to the body, at least a first nonrotating body vibration sensor, the at least first nonrotating body vibration sensor outputting at least first nonrotating body vibration sensor data correlating to vibrations, at least a first nonrotating body circular force generator, the at least a first nonrotating body circular force generator fixedly coupled with the nonrotating body, the at least first nonrotating body circular force generator controlled to produce a rotating force with a controllable rotating force magnitude and a controllable rotating force phase, the controllable rotating force magnitude controlled from a minimal force magnitude up to a maximum force magnitude, and with the controllable rotating force phase controlled in reference to the rotary wing aircraft member sensor data correlating to the relative rotation of the rotating rotary wing hub rotating relative to the nonrotating body wherein the vibration sensed by the at least first nonrotating body vibration sensor is reduced.

First claim

What is claimed is:

1. A vehicle, said vehicle having a nonrotating vehicle body and a rotating machine member, said vehicle including a vehicle vibration control system, said vehicle vibration control system including
a vehicle vibration control system controller,
a vehicle rotating machine member sensor for inputting vehicle rotating machine member data correlating to said relative rotation of said vehicle rotating machine member rotating relative to said nonrotating vehicle body into said vehicle vibration control system controller,
at least a first nonrotating vehicle body vibration sensor, said at least first nonrotating vehicle body vibration sensor inputting at least first nonrotating vehicle body vibration sensor data correlating to vehicle vibrations into said vehicle vibration control system controller,
at least a first nonrotating vehicle body circular force generator, said at least a first nonrotating vehicle body circular force generator fixedly coupled with said nonrotating vehicle body, said at least first nonrotating vehicle body circular force generator controlled to produce a rotating force with a controllable rotating force magnitude and a controllable rotating force phase, said controllable rotating force magnitude controlled from a minimal force magnitude up to a maximum force magnitude, and with said controllable rotating force phase controlled in reference to said vehicle rotating machine member sensor data correlating to said relative rotation of said vehicle rotating machine member rotating relative to said nonrotating vehicle body wherein said vehicle vibration sensed by said at least first nonrotating vehicle body vibration sensor is reduced.

2. A vehicle, as claimed in claim 1 , including n nonrotating vehicle body vibration sensors and m nonrotating vehicle body circular force generators wherein n>m.

3. A vehicle, as claimed in claim 1 , wherein said rotating force is controlled to rotate at a vibration disturbance frequency.

4. A vehicle, as claimed in claim 1 , wherein said vehicle vibration control system controller generates a rotating reference signal from said vehicle rotating machine member data correlating to said relative rotation of said vehicle rotating machine member rotating relative to said nonrotating vehicle body.

5. A vehicle, as claimed in claim 4 , wherein said vehicle vibration control system controller calculates in reference to said rotating reference signal said rotating force with a real part α and an imaginary part β.

6. A vehicle, as claimed in claim 1 , wherein said at least first nonrotating vehicle body circular force generator including at least a first rotating mass (mass 1 _ 1 ) controllably driven about a first rotating mass axis with a first rotating mass controllable rotating imbalance phase Φ 1 _ 1 and at least a second corotating mass (mass 1 _ 2 ) controllably driven about a second rotating mass axis with a second rotating mass controllable rotating imbalance phase φ 1 _ 2 .

7. A vehicle, as claimed in claim 1 , including n nonrotating vehicle body vibration sensors and m nonrotating vehicle body circular force generators, said vehicle vibration control system controller generates a rotating reference signal from said vehicle rotating machine member data correlating to said relative rotation of said vehicle rotating machine member rotating relative to said nonrotating vehicle body, said first nonrotating vehicle body circular force generator including a first rotating mass (mass 1 _ 1 ) controllably driven about a first rotating mass axis with a first rotating mass controllable rotating imbalance phase φ 1 _ 1 and a second corotating mass (mass 1 _ 2 ) controllably driven about a second rotating mass axis with a second rotating mass controllable rotating imbalance phase φ 1 _ 2 , said imbalance phase φ 1 _ 1 and said imbalance phase φ 1 _ 2 controlled in reference to said rotating reference signal, said mth nonrotating vehicle body circular force generator including a first rotating mass (mass m —1 ) controllably driven about a first rotating mass axis with a first rotating mass controllable rotating imbalance phase Φ m _ 1 and a second corotating mass (mass m _ 2 ) controllably driven about a second rotating mass axis with a second rotating mass controllable rotating imbalance phase Φ m _ 2 , said imbalance phase Φ m _ 1 and said imbalance phase Φ m _ 2 controlled in reference to said rotating reference signal.

8. A vehicle, as claimed in claim 1 , wherein said first nonrotating vehicle body circular force generator includes a first rotating imbalance concentration mass (mass 1 _ 1 ) with a first rotating mass controllable rotating imbalance phase Φ 1 _ 1 and a second corotating imbalance concentration mass (mass 1 _ 2 ) with a second rotating mass controllable rotating imbalance phase Φ 1 _ 2 .

9. A vehicle, as claimed in claim 8 , wherein said first rotating imbalance concentration mass (mass 1 _ 1 ) is driven with a first motor and said second corotating imbalance concentration mass (mass 1 _ 2 ) is driven with a second motor.

10. A vehicle, as claimed in claim 8 , with a detent linking between said first rotating imbalance concentration mass (mass m _ 1 ) and said second corotating imbalance concentration mass (mass m _ 2 ), and a motor for driving said first rotating mass (mass m _ 1 ), wherein said first rotating mass (mass m _ 1 ) comprises a master rotating mass (mass m _ 1 ) with a master rotating mass controllable rotating imbalance phase Φ 1 _ 1 , and said second corotating mass (mass m _ 2 ) comprises a slave corotating mass (mass m _ 2 ) with a slave rotating mass controllable rotating imbalance phase φ 1 _ 2 with said detent controlling said slave rotating mass controllable rotating imbalance phase φ 1 _ 2 relative to said master rotating mass controllable rotating imbalance phase Φ 1 _ 1 .

11. A vehicle, as claimed in claim 1 , including n nonrotating vehicle body vibration sensors and m nonrotating vehicle body circular force generators, with m≧2,
said first nonrotating vehicle body circular force generator including a first rotating imbalance concentration mass (mass 1 _ 1 ) controllably driven about a first circular force generator axis with a first rotating mass controllable rotating imbalance phase Φ 1 _ 1 and a second corotating imbalance concentration mass (mass 1 _ 2 ) controllably driven about said first circular force generator axis with a second rotating mass controllable rotating imbalance phase φ 1 _ 2 , and
a second nonrotating vehicle body circular force generator including a first rotating imbalance concentration mass (mass 2 _ 1 ) controllably driven about a second circular force generator axis with a first rotating mass controllable rotating imbalance phase Φ 2 _ 1 and a second corotating imbalance concentration mass (mass 2 _ 2 ) controllably driven about said second circular force generator axis with a second rotating mass controllable rotating imbalance phase Φ 2 _ 2 , said second nonrotating vehicle body circular force generator oriented relative to said first nonrotating vehicle body circular force generator wherein said second circular force generator axis is nonparallel with said first circular force generator axis.

12. A vehicle, as claimed in claim 11 , wherein m≧3, and including a third nonrotating vehicle body circular force generator including a first rotating imbalance concentration mass (mass 3 _ 1 ) controllably driven about a third circular force generator axis with a first rotating mass controllable

Assignees

• Lord Corp

Inventors

• Jolly Mark R
• Altieri Russell E
• Badre-Alam Askari
• Ivers Douglas E
• Swanson Doug A
• Mellinger Daniel
• Meyers Andrew D

Classifications

• F16F15/22

  Compensation of inertia forces {(suppression of vibrations of rotating systems by favourable grouping or relative arrangements of the moving members of the system or systems F16F15/20, counterweights F16F15/28; correcting-weights for balancing rotating bodies F16F15/32)} · CPC title

• B64C27/001 Primary

  Vibration damping devices · CPC title

• G05D19/02

  characterised by the use of electric means · CPC title

• B64C2027/003

  mounted on rotor hub, e.g. a rotary force generator · CPC title

• B64C27/32

  Rotors · CPC title