COMPUTER SYSTEM AND PROGRAM PRODUCT FOR CONTROLLING VIBRATIONS
First Claim
1. A computer programmable media containing programmable software to control a rotating assembly vibration control system with a first imbalance mass concentration rotor and a second imbalance mass concentration rotor, for a rotating assembly having a periodic vibration while rotating at an operational rotation frequency, said computer programmable software including:
- first program instructions for rotating said first imbalance mass concentration rotor and said second imbalance mass concentration rotor at a whole number multiple vibration canceling rotation frequency 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 rotating net force vector to inhibit said periodic vibration, second program instructions to opposingly orient said first imbalance mass concentration relative to said second imbalance mass concentration during a starting stopping rotation speed less than said whole number multiple vibration canceling rotation frequency.
1 Assignment
0 Petitions
Accused Products
Abstract
A computer programmable system and program product for controlling vibrations is provided. The computer programmable system and program product include first program instructions for actively driving a first imbalance mass concentration rotor and a second imbalance mass concentration rotor at a vibration canceling rotation frequency while controlling the rotational position of the first imbalance mass concentration and the second imbalance mass concentration to produce a rotating net force vector to inhibit periodic vibrations. The computer programmable system and program product include second program instructions to opposingly orient the first imbalance mass concentration relative to the second imbalance mass concentration during a starting stopping rotation speed less than the vibration canceling rotation frequency. The system and product preferably include a fault mode control protocol for controlling a rotation of the rotors during a sensed failure of the rotating assembly vibration control system.
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Citations
71 Claims
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1. A computer programmable media containing programmable software to control a rotating assembly vibration control system with a first imbalance mass concentration rotor and a second imbalance mass concentration rotor, for a rotating assembly having a periodic vibration while rotating at an operational rotation frequency, said computer programmable software including:
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first program instructions for rotating said first imbalance mass concentration rotor and said second imbalance mass concentration rotor at a whole number multiple vibration canceling rotation frequency 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 rotating net force vector to inhibit said periodic vibration, second program instructions to opposingly orient said first imbalance mass concentration relative to said second imbalance mass concentration during a starting stopping rotation speed less than said whole number multiple vibration canceling rotation frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computer program product for controlling a rotating vibration control system with a first imbalance mass concentration rotor and a second imbalance mass concentration rotor, said computer program product comprising:
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a computer readable medium, first program instructions for driving said first imbalance mass concentration rotor and said second imbalance mass concentration rotor at a vibration canceling rotation frequency while controlling the rotational position of said first imbalance mass concentration and said second imbalance mass concentration to produce a net force vector to inhibit a vibration, second program instructions to opposingly orient said first imbalance mass concentration relative to said second imbalance mass concentration during a transitioning rotation speed. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A computer program product for controlling a rotating assembly vibration control system, said computer program product comprising:
a computer readable medium, first program instructions to control a rotation of a first rotor and a rotation of a second rotor, second program instructions to monitor a plurality of sensor signals, third program instructions to control the rotation speed and phase of the first rotor and the rotation speed and phase of the second rotor to minimize a monitored vibration sensor signal. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A rotating vibration control system for an assembly having an operational vibration, said vibration control system comprised of:
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a first motor having a first rotor with a first imbalance mass concentration, said first motor driving a rotation of said first rotor, a second motor having a second rotor with a second imbalance mass concentration, said second motor driving a rotation of said second rotor, a first vibration sensor for producing a first vibration sensor signal, a second vibration sensor for producing a second vibration sensor signal, a first rotor rotational position sensor, a second rotor rotational position sensor, a motor control loop for controlling the rotation of said first rotor and the rotation of said second rotor, a vibration control loop for providing commands to the motor control loop to minimize the first vibration sensor signal and the second vibration sensor signal. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A helicopter vibration control system for a helicopter with a rotating wing assembly and having a periodic vibration while rotating at a helicopter operational rotation frequency, said helicopter vibration control system comprised of:
a housing, said housing containing a first motor, said first motor having a first rotor with a first imbalance mass concentration, said housing containing a second motor, said second motor having a second rotor with a second imbalance mass concentration, an electronics control system with program instructions which control a speed and a phase of said first motor and said second motor such that said first imbalance mass concentration and said second imbalance mass concentration are driven at a vibration canceling rotation frequency wherein said helicopter periodic vibration is reduced. - View Dependent Claims (49, 50)
- 51. A method of controlling a periodic vibration of an aircraft, said method including providing a housing having a rotor housing cavity subsystem, said rotor cavity subsystem containing a first motor having a first rotor with a first imbalance mass concentration, a second motor having a second rotor with a second imbalance mass concentration, driving said first rotor and said second rotor with motor control commands at a vibration canceling rotation frequency while controlling the rotational position of said first imbalance mass concentration and said second imbalance mass concentration in order to produce a net force vector to inhibit said periodic vibration.
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56. A rotating vibration control system, said rotating vibration control system comprised of:
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a first stator having a plurality of electromagnets, said electromagnets periodically spaced around a center axis of rotation, a first imbalance rotor having a mass concentration, said first imbalance rotor including a plurality of magnets periodically spaced around said center axis of rotation, said first imbalance rotor adjacent said first stator, a second stator having a plurality of electromagnets, said electromagnets periodically spaced around a center axis of rotation, a second imbalance rotor having a having a mass concentration, said second imbalance rotor including a plurality of magnets periodically spaced around said center axis of rotation, said second imbalance rotor adjacent said second stator, a vibration sensor for producing a vibration sensor signal, a vibration control loop for providing motor control commands to rotate the first rotor and the second rotor to minimize the vibration sensor signal. - View Dependent Claims (57, 58)
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59. A method of controlling a periodic vibration of a rotating assembly which rotates at an operational rotation frequency, said method including:
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providing a first stator having a plurality of electromagnets, said electromagnets periodically spaced around a center axis of rotation, and a first imbalance rotor, said first imbalance rotor having an eccentric mass concentration, said first imbalance rotor including a plurality of magnets periodically spaced around said center axis of rotation, providing a second stator having a plurality of electromagnets, said electromagnets periodically spaced around a center axis of rotation, and a second imbalance rotor, said second imbalance rotor having an eccentric mass concentration, said second imbalance rotor including a plurality of magnets periodically spaced around said center axis of rotation, providing computer readable program instructions to control the rotation of the first rotor and the rotation of the second rotor to minimize the periodic vibration. - View Dependent Claims (60, 61, 62)
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63. A rotating vibration control system, said rotating vibration control system for balancing out a periodic vibration force, said rotating vibration control system comprised
a first motor having a plurality of electromagnets, said electromagnets periodically spaced around a center axis of rotation, a first imbalance rotor having a mass concentration, said first imbalance rotor including a plurality of magnets periodically spaced around said center axis of rotation, said first imbalance rotor and said first motor centered about said axis of rotation, said first imbalance rotor driven by said first motor around said center axis of rotation at a vibration controlling rotation frequency, and a second imbalance rotor, said second imbalance rotor having a mass concentration, said second imbalance rotor centered about said axis of rotation with said second imbalance rotor proximate said first imbalance rotor, said second imbalance rotor mass concentration movable relative to said first imbalance rotor mass concentration, a vibration sensor for producing a vibration sensor signal, a vibration control loop for providing commands to control the rotation of the first rotor and the rotation of the second rotor to minimize the vibration sensor signal.
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64. A computer programmable media containing programmable software to control a rotating assembly vibration control system with an at least first imbalance mass concentration rotor and an at least second imbalance mass concentration rotor, for a rotating assembly having a periodic vibration while rotating at an operational rotation frequency, said computer programmable software including:
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first program instructions for driving said at least first imbalance mass concentration rotor and said at least second imbalance mass concentration rotor at a vibration canceling rotation frequency while controlling the rotational position of said at least first imbalance mass concentration and said at least second imbalance mass concentration to produce a rotating net force vector to inhibit said periodic vibration, second program instructions to opposingly orient said at least first imbalance mass concentration relative to said at least second imbalance mass concentration during a starting stopping rotation speed less than said vibration canceling rotation frequency. - View Dependent Claims (65, 66, 67, 68, 69, 70, 71)
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Specification