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Method and device for filtering the vibratory excitations transmitted between two parts especially between the rotor and the fuselage of a helicopter

  • US 5,316,240 A
  • Filed: 08/12/1992
  • Issued: 05/31/1994
  • Est. Priority Date: 08/29/1991
  • Status: Expired due to Term
First Claim
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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:

  • 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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