Patent ID: 9600000
Date: 2017-03-21
CPC Classifications: F16F,G05B,G05D

Claim:
1. A method for active control of mechanical vibrations by implementation of a control law including a central corrector and a Youla parameter configured to attenuate essentially mono-frequency mechanical vibratory perturbations created in a physical structure of a physical system by at least one rotary machine fixed by a support to said physical structure and rotating at a determinable speed of rotation, the frequency of the vibratory perturbations being linked to the speed of rotation of the rotary machine and varying as a function of the variations of said speed of rotation, at least one mechanical actuator being disposed between the rotary machine and the physical structure, as well as at least one vibration sensor ( 4 ) producing signals y(t) or Y(t) according to a mono-variable or multi-variable case, respectively, the use of one sensor corresponding to a mono-variable case and the use of several sensors corresponding to a multi-variable case, the at least one mechanical actuator being in series, in the support, or in parallel with the support, the at least one sensor being connected to at least one calculator controlling the at least one actuator, the calculator including a correction calculation means for producing control signals u(t) or U(t) according to a mono-variable or multi-variable case, respectively, for the at least one actuator as a function of measurements of the at least one sensor and of a vibratory perturbation frequency parameter, the calculation means being configured according to a correction control law corresponding to a block-modeling of the system, said blocks being those of the central corrector and of a Youla parameter block, the modeling being such that only the Youla parameter has coefficients that depend on the vibratory perturbation frequency in said correction control law, the central corrector having fixed coefficients, the Youla parameter being in the form of an infinite impulse response filter, the method comprising: during a preliminary design phase, during a use phase, in real time: wherein in the mono-variable case, in the preliminary design phase, the method further comprises: and, in the use phase, in real time: