초록 ▼

A rotary blade rotating hub mounted rotating assembly vibration control system including a first imbalance mass concentration rotor, a second imbalance mass concentration rotor, a third imbalance mass concentration rotor, and a fourth imbalance mass concentration rotor. The first imbalance mass conc

A rotary blade rotating hub mounted rotating assembly vibration control system including a first imbalance mass concentration rotor, a second imbalance mass concentration rotor, a third imbalance mass concentration rotor, and a fourth imbalance mass concentration rotor. The first imbalance mass concentration rotor has a first imbalance mass concentration rotor center axis rotation centered on the rotating assembly center rotation axis. The second imbalance mass concentration rotor has a second imbalance mass concentration rotor center axis rotation centered on the rotating assembly center rotation axis. The third imbalance mass concentration rotor has a third imbalance mass concentration rotor center axis rotation centered on the rotating assembly center rotation axis. The fourth imbalance mass concentration rotor has a fourth imbalance mass concentration rotor center axis rotation centered on the rotating assembly center rotation axis. The first and second imbalance mass concentration rotors are driven at a first rotation speed greater than the rotating assembly operational rotation frequency while controlling the rotational position of the first imbalance mass concentration and the second imbalance mass concentration to produce a first rotating net force vector to inhibit a first vibration frequency. The third and fourth imbalance mass concentration rotors are driven at a second rotation speed greater than the rotating assembly operational rotation frequency while controlling the rotational position of the third imbalance mass concentration and the fourth imbalance mass concentration to produce a second rotating net force vector to inhibit a second vibration frequency.

대표청구항 ▼

1. A rotary blade rotating hub mounted rotating assembly vibration control system for a rotary blade rotating hub assembly experiencing a vibration of a plurality of vibration frequencies while rotating at an operational rotation frequency about a rotating assembly center axis of rotation, said rota

1. A rotary blade rotating hub mounted rotating assembly vibration control system for a rotary blade rotating hub assembly experiencing a vibration of a plurality of vibration frequencies while rotating at an operational rotation frequency about a rotating assembly center axis of rotation, said rotating assembly vibration control system comprising: a first imbalance mass concentration rotor, a second imbalance mass concentration rotor, a third imbalance mass concentration rotor, and a fourth imbalance mass concentration rotor,said first imbalance mass concentration rotor having a first imbalance mass concentration rotor center axis rotation centered on said rotating assembly center axis of rotation,said second imbalance mass concentration rotor having a second imbalance mass concentration rotor center axis rotation centered on said rotating assembly center axis of rotation,said third imbalance mass concentration rotor having a third imbalance mass concentration rotor center axis rotation centered on said rotating assembly center axis of rotation,said fourth imbalance mass concentration rotor having a fourth imbalance mass concentration rotor center axis rotation centered on said rotating assembly center axis of rotation,said first imbalance mass concentration rotor and said second imbalance mass concentration rotor driven at a first rotation speed greater than said rotating assembly operational rotation frequency while controlling the rotational position of said first imbalance mass concentration and said second imbalance mass concentration to produce a first rotating net force vector to inhibit a first vibration frequency,said third imbalance mass concentration rotor and said fourth imbalance mass concentration rotor driven at a second rotation speed greater than said rotating assembly operational rotation frequency while controlling the rotational position of said third imbalance mass concentration and said fourth imbalance mass concentration to produce a second rotating net force vector to inhibit a second vibration frequency. 2. A vibration control system as claimed in claim 1, wherein said first vibration frequency is a distinct frequency from said second vibration frequency and said first imbalance mass concentration rotor and said second imbalance mass concentration rotor is driven and controlled independently from said third imbalance mass concentration rotor and said fourth imbalance mass concentration rotor. 3. A vibration control system as claimed in claim 1, wherein said first vibration frequency is a distinct frequency from said second vibration frequency and said first imbalance mass concentration rotor rotational position control and said second imbalance mass concentration rotor rotational position control is segregated from said third imbalance mass concentration rotor rotational position control and said fourth imbalance mass concentration rotor rotational position control. 4. A vibration control system as claimed in claim 1, including a tachometer input and a first rotation speed rotors stage VC controller for controlling said first imbalance mass concentration rotor rotational position and said second imbalance mass concentration rotor rotational position, and a second rotation speed rotors stage VC controller for controlling said third imbalance mass concentration rotor rotational position and said fourth imbalance mass concentration rotor rotational position. 5. A vibration control system as claimed in claim 1, including a first rotation speed electronics control system for controlling said first imbalance mass concentration rotor rotational position and said second imbalance mass concentration rotor rotational position, and a second rotation speed electronics control system for controlling said third imbalance mass concentration rotor rotational position and said fourth imbalance mass concentration rotor rotational position. 6. A vibration control system as claimed in claim 1 including a fault mode control protocol for controlling a rotation of said rotors during a sensed failure of the rotating assembly vibration control system. 7. A vibration control system as claimed in claim 1 wherein said first imbalance mass concentration is opposingly oriented to said second imbalance mass concentration during a first starting stopping rotation speed less than said first rotation speed and said third imbalance mass concentration is opposingly oriented to said fourth imbalance mass concentration during a second starting stopping rotation speed less than said second rotation speed. 8. A rotating vibration control system for a rotating assembly having at least a first vibration frequency operational vibration and at least a second vibration frequency operational vibration, said rotating vibration control system comprised of: a first rotor with a first imbalance mass concentration, said first rotor driven to rotate at a first rotation speed greater than an operational rotation frequency of said rotating assembly,a second rotor with a second imbalance mass concentration, said second rotor driven to rotate at said first rotation speed greater than an operational rotation frequency of said rotating assemblya third rotor with a third imbalance mass concentration, said third rotor driven to rotate at a second rotation speed greater than an operational rotation frequency of said rotating assemblya fourth rotor with a fourth imbalance mass concentration, said fourth rotor driven to rotate at said second rotation speed greater than an operational rotation frequency of said rotating assemblyat least a first vibration sensor for producing a plurality of first vibration sensor signals,at least a second vibration sensor for producing a plurality of second vibration sensor signals,a first rotor rotational position sensor,a second rotor rotational position sensor,a third rotor rotational position sensor,a fourth rotor rotational position sensor,a first motor control loop for controlling the rotation of said first rotor and the rotation of said second rotor,a first vibration control loop for providing commands to the first motor control loop to minimize said first vibration sensor signals and said second vibration sensor signals,a second motor control loop for controlling the rotation of said third rotor and the rotation of said fourth rotor,a second vibration control loop for providing commands to the second motor control loop to minimize said first vibration sensor signals and said second vibration sensor signals. 9. A rotary wing aircraft rotating hub mounted vibration control system for a rotary wing hub having at least a first and a second vibration frequency while rotating at a rotary wing operational rotation frequency, said rotating hub mounted vibration control system comprised of: a system housing, said system housing attached to said rotary wing hub and rotating with said rotary wing hub at said operational rotation frequency, said housing a first coaxial ring motor having a first rotor with a first imbalance mass concentration, a second coaxial ring motor having a second rotor with a second imbalance mass concentration,a third coaxial ring motor having a third rotor with a third imbalance mass concentration, a fourth coaxial ring motor having a fourth rotor with a fourth imbalance mass concentration,an electronics control system for controlling the vibration control systemsaid electronics control system including a first rotation speed rotor stage VC controller electronics control subsystem for controlling a rotational position of said first imbalance mass concentration rotor and a rotational position of said second imbalance mass concentration rotor, said first rotation speed rotor stage VC controller electronics control subsystem controlling a speed and a phase of said first coaxial ring motor and said second coaxial ring motor such that said first imbalance mass concentration and said second imbalance mass concentration are driven at a whole number multiple vibration canceling rotation frequency greater than said operational rotation frequency wherein said first rotary wing hub vibration frequency is reduced, said electronics control system including a second rotation speed rotor stage VC controller electronics control subsystem for controlling a rotational position of said third imbalance mass concentration rotor and a rotational position of said fourth imbalance mass concentration rotor, said second rotation speed rotor stage VC controller electronics control subsystem controlling a speed and a phase of said third coaxial ring motor and said fourth coaxial ring motor such that said third imbalance mass concentration and said fourth imbalance mass concentration are driven at a whole number multiple vibration canceling rotation frequency greater than said operational rotation frequency wherein said second helicopter rotary wing hub vibration frequency is reduced. 10. A method of controlling a plurality of vibration frequencies of an aircraft with a rotary hub which rotates at an operational rotation frequency, said method including providing an annular ring housing containing a first coaxial ring motor having a first rotor with a first imbalance mass concentration, a second coaxial ring motor having a second rotor with a second imbalance mass concentration, a third coaxial ring motor having a third rotor with a third imbalance mass concentration, a fourth coaxial ring motor having a fourth rotor with a fourth imbalance mass concentration, and an electronics control system for controlling the vibration control system said electronics control system including a first rotation speed rotor stage VC controller electronics control subsystem for controlling a rotational position of said first imbalance mass concentration rotor and a rotational position of said second imbalance mass concentration rotor, said electronics control system including a second rotation speed rotor stage VC controller electronics control subsystem for controlling a rotational position of said third imbalance mass concentration rotor and a rotational position of said fourth imbalance mass concentration rotor, andsecuring said annular ring housing to said rotary hub with said annular ring housing rotating at said operational rotation frequency with said rotary hub, driving said first rotor and said second rotor at a first whole number multiple vibration canceling rotation frequency greater than said operational rotation frequency while controlling the rotational position of said first imbalance mass concentration and said second imbalance mass concentration in order to inhibit a first vibration frequency driving said third rotor and said fourth rotor at a second whole number multiple vibration canceling rotation frequency greater than said operational rotation frequency while controlling the rotational position of said third imbalance mass concentration and said fourth imbalance mass concentration in order to inhibit a second vibration frequency. 11. An electronic vibration control system, said system controlling a rotation of a first rotor and a rotation of a second rotor, said system monitoring a plurality of sensor signals,said system controlling the rotation speed, rotation direction and phase of the first rotor and the rotation speed, rotation direction and phase of the second rotor to minimize a first monitored vibration frequency sensor signal,said system controlling a rotation of a third rotor and a rotation of a fourth rotor, with said system controlling the rotation speed, rotation direction and phase of the third rotor and the rotation speed, rotation direction and phase of the fourth rotor to minimize a second monitored vibration frequency sensor signal. 12. A system as claimed in claim 11 said system opposingly orienting a first rotor first imbalance mass concentration relative to a second rotor second imbalance mass concentration. 13. A system as claimed in claim 11, said system opposingly orienting a third rotor imbalance mass concentration relative to a fourth rotor imbalance mass concentration. 14. A system as claimed in claim 11, said system including a fault mode control protocol for controlling a rotation of said rotors during a sensed rotating vibration control system failure. 15. A system as claimed in claim 11, said system including a first rotation speed rotor stage VC controller electronics control subsystem for controlling the first rotor and the second rotor and a separate second rotation speed rotor stage VC controller electronics control subsystem for controlling the third rotor and the fourth rotor. 16. A system as claimed in claim 11 centered about a rotary wing center axis of rotation. 17. A system as claimed in claim 11 wherein said first and second rotors are separated from said third and fourth rotors.