A vibration reduction system and vibration reduction method for reducing the vibration of the whole aircraft engine

Abstract

The invention relates to the technical field of mechanical vibration control, in particular to a vibration reduction system and a vibration reduction method for reducing the vibration of an aero-engine; the system includes a rotational speed sensor, a rotational speed signal acquisition unit, a vibration sensor, a vibration signal acquisition unit, and a vibration control unit. The engine electronic controller will analyze the vibration value and the vibration value of the current time and the next time. The azimuth angle is sent to the vibration controller; the vibration controller conducts vibration analysis and logical judgment according to the signal collected by the vibration signal acquisition unit and the signal sent by the electronic controller, and obtains the control signal required by the vibration excitation device, which is processed by the excitation processing unit. Control the vibration excitation device. The invention effectively reduces the vibration of the whole engine through intelligent adjustment.

Description

technical field [0001] The invention relates to the technical field of mechanical vibration control, in particular to a vibration reduction system and a vibration reduction method for reducing the vibration of the entire aero-engine. Background technique [0002] Aero-engines are large rotating machines with high temperature and high speed. Due to the machining error of parts and the influence of the natural frequency of the rotor itself, the rotor of the engine will generate a large unbalanced force when it rotates, and the unbalanced force will cause the whole machine to vibrate. Larger vibration will affect the life of the engine itself and the flight safety of the aircraft. The vibration value of the engine is an important parameter to monitor whether the engine state is normal. [0003] The traditional methods to reduce the vibration level of the engine include improving the machining accuracy of engine parts and reducing the residual unbalance of the rotor dynamic bala...

AI Technical Summary

Problems solved by technology

[0003] Traditional methods to reduce engine vibration levels include improving the machining accuracy of engine parts and reducing the residual unbalance of the rotor dynamic balance, but it is still impossible to completely eliminate the unbalance, and the engine rotor will always generate unbalanced force and vibration of the whole machine

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