Method and device for filtering the vibratory excitations transmitted between two parts especially between the rotor and the fuselage of a helicopter
First Claim
1. A method for filtering the vibratory excitations transmitted between two parts (3,5), linked by at least one linking element (7) comprising a member (8) for transmission of the static force between said parts (3,5), and an actuator (9) associated with said transmission member (8), comprising:
- generating a physical quantity which is representative of the vibratory excitations transmitted from one part to the other part is measured on said linking element (7), and corresponding first signals are generated;
processing said first signals by processing means (12), in order to convert said first signals into second control signals for said actuator (9); and
carrying out the decoupling of the static force and of the vibratory excitations by said processing means (12), in such a way that said second control signals drive the actuator in order to exactly oppose said vibratory excitations.
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Accused Products
Abstract
The present invention relates to a device for elastic linking between two parts (3, 5) in order to filter the vibratory excitations which are transmitted from one to the other, comprising:
at least one linking element (7) between said parts (3, 5) comprising a transmission member (8) for the static force between said parts (3, 5), and an actuator (9) associated with said transmission member (8),
at least one means of measurement (10) of a physical quantity which is representative of said vibratory excitations, and able to supply corresponding first signals, and
electronic processing means (12) for said first signals in order to convert them into second control signals for said actuator (9).
According to the invention, said measurement means (10) is mounted on said linking element (7).
84 Citations
21 Claims
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1. A method for filtering the vibratory excitations transmitted between two parts (3,5), linked by at least one linking element (7) comprising a member (8) for transmission of the static force between said parts (3,5), and an actuator (9) associated with said transmission member (8), comprising:
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generating a physical quantity which is representative of the vibratory excitations transmitted from one part to the other part is measured on said linking element (7), and corresponding first signals are generated; processing said first signals by processing means (12), in order to convert said first signals into second control signals for said actuator (9); and carrying out the decoupling of the static force and of the vibratory excitations by said processing means (12), in such a way that said second control signals drive the actuator in order to exactly oppose said vibratory excitations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An elastic linking device between two parts (3,5) for transmitting, from one part to the other part, the static forces in the axis of the device and simultaneously filtering the associated coaxial vibratory excitation which are transmitted from one part to the other part, said device comprising:
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at least one linking element (7) between said parts (3,5) comprising a transmission member (8) for the static force between said parts (3,5), and an actuator (9) associated with said transmission member (8); at least one means of measurement (10) of a physical quantity which is representative of the vibratory excitations transmitted from one part to the other part, said measurement means being able to supply corresponding first signals, said measurement means (10) being mounted on said linking element (7); and electronic processing means (12) for processing said first signals in order to convert them into second control signals for said actuator (9), said processing means (12) decoupling the static force and the vibratory excitations, in such a way that said second control signals drive the actuator in order to exactly oppose said vibratory excitations. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An aircraft with rotating wings, especially a helicopter, comprising a main lift rotor (2) driven by a main transmission gearbox (3) for the motive power, which gearbox supports a fuselage (5), said aircraft comprising:
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an elastic linking device between said transmission gearbox (3) and said fuselage (5) for transmitting, from said transmission gearbox (3) to the fuselage (5), the static forces in the axis of the device and simultaneously filtering the associated coaxial vibratory excitations which are transmitted from the transmission gearbox (3) to the fuselage, said device comprising;
at least one linking element (7) between the transmission box (3) and the fuselage (5) comprising a transmission member (8) for the static force between said transmission box (3) and said fuselage (5) and an actuator (9) associated with the transmission member (8);at least one means of measurement (10) of a physical quantity which is representative of the vibratory excitations transmitted from the transmission box (3) to the fuselage (5), said measurement means able to supply corresponding first signals, the measurement means (10) being mounted on said linking element (7) and electronic processing means (12) for processing said first signals in order to convert them into second control signals for said actuator (9), said processing means (12) decoupling the static force and the vibratory excitations, in such a way that said second control signal drive the actuator in order to exactly oppose said vibratory excitations. - View Dependent Claims (20, 21)
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Specification