Active vibration control device and vibration control method

Abstract

The invention discloses an active vibration control device and a vibration control method. Specifically, a signal generator generates a vibration signal, the vibration signal is transmitted to a poweramplifier for power amplification and then transmitted to a first vibration exciter, the first vibration exciter drives a vibration damper to conduct vibration excitation back and forth, and a vibration source similar to vibration of an engine is generated; an acceleration sensor converts the vibration source into a vibration signal which is the same with a vibration signal of the engine; a capture card collects the vibration signals and transmits the vibration signals to a control module, the control module conducts PID adjustment on the received the vibration signals to obtain a signal which is the same with the vibration signals in frequency and reverse with the vibration signals in direction, and the signal is output to a second power amplifier and subjected to power amplification; asecond vibration exciter receives the amplified signal and generates an excitation force which is the same with the vibration source in cycle and reverse with the vibration source in direction; and the excitation force is acted on the first vibration exciter. The active vibration control device and the vibration control method have the advantages of being low in cost, simple in structure, capableof achieving active adjusting and controlling, wide in control range, high in precision and the like.

Description

technical field [0001] The invention belongs to the technical field of aero-engines, and in particular relates to an active vibration control device and a vibration control method. Background technique [0002] The aero engine is the core component of the aircraft, and it is a high-speed, complex fluid machine. Therefore, vibrations are inevitably generated during engine operation. There are many reasons for the vibration of the engine: including the complexity of the engine structure, the diversity of parts and the variability of working conditions. According to statistics, more than 90% of engine structural strength failures are related to vibration. At the same time, the vibration of the aero-engine will directly affect its normal operation and life. For example, the vibration of the high-speed rotating rotor, blades and casing in the engine will greatly limit the performance and life of the engine: [0003] [1] The vibration of the stator will not only damage itself ...

AI Technical Summary

Problems solved by technology

[0010] Purpose of the invention: In order to solve the problems of complex operation and high cost in active vibration contr

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