Dual-channel shafting transverse vibration active control device

Abstract

The invention discloses a dual-channel shafting transverse vibration active control device. The dual-channel shafting transverse vibration active control device comprises first, second and third acceleration sensors, a vibration controller, first, second and third signal amplifiers, first and second power amplifiers, first and second electromagnetic actuators and an actuator bracket, wherein the first and second electromagnetic actuators are connected with a middle bearing seat through the actuator bracket, the first, second and third acceleration sensors transmit measured vibration acceleration electric signals to the first, second and third signal amplifiers to be amplified, the vibration acceleration electric signals are transmitted to the vibration controller through the first, second and third signal amplifiers, and the vibration controller performs spectrum analysis and feature signal extraction to obtain vibration information; and the third acceleration sensor extracts shafting vibration signals as reference signals, the first and second electromagnetic actuators generate force which is the same as shafting vibration in frequency and opposite in direction to offset shafting vibration, and control over shafting transverse vibration in multiple directions is achieved.

Description

technical field [0001] The invention relates to an active control device for lateral vibration of a shaft system, in particular to a dual-channel active control device for lateral vibration of a shaft system. Background technique [0002] Shafting is the main equipment for power transmission. It effectively connects the main engine and executive parts (such as oars) and forms a complete power system to make the equipment (such as ships) run normally. When the main force transmission of the shaft system is uneven, the torque and installation cannot be centered, and the material processing is inaccurate, etc., the shaft system will be in an unbalanced state and lateral vibration will occur (in addition, the propeller in the uneven flow field work, it will cause disturbance at the tail of the ship, causing resonance and local vibration of the ship). Severe lateral vibration may cause excessive bending stress of the shafting, causing it to break and endangering human life. [...

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Problems solved by technology

[0006] Due to the limited effect of the dynamic optimization design method, and the limitation that the passive control cannot be controlled in the low frequency band, it is necessary to conduct research on the active control strategy of the lateral vibration of the propulsion shafting

The existing active control technology is commonly used to control the longitudinal vibration of the shaft system, but the active control method to control the lateral vibration is currently less studied

And because the direction of lateral vibration is changeable, compared with longitudinal vibration, which only moves in one dimension in the radial direction of the shaft system, its control is more difficult, and the effect of simple single-channel lateral vibration control is not ideal

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