磁悬浮-气囊主被动隔振技术研究及性能测试

Technical study and performance testing of maglev actuator-air spring vibration isolation mounts

针对船舶机械设备的低频线谱隔振,提出了磁悬浮-气囊主被动混合隔振装置,研制了性能优良的主被动混合隔振器;研究了线谱振动的自适应控制算法,该算法计算量小、实时性好;针对磁悬浮作动器的非线性,提出了复杂度低、稳定性好的非线性逆模型补偿算法。建立了磁悬浮-气囊主被动混合隔振装置的实验台架,实验结果表明,本文的主被动混合隔振装置具有良好的宽频隔振效果,并能有效衰减多根低频线谱振动能量,同时未因作动器非线性而引起额外的振动线谱。

In order to effectively control the low frequency vibration of ship machinery,an active-passive vibration isolation mount using maglev actuator and air spring is proposed,and a hybrid vibration isolator with good performance is designed.An adaptive algorithm for line-spectrum vibration control is proposed,and an improvement algorithm based on reverse model linearization is proposed to compensate the nonlinearity of maglev actuator.The improved control algorithm here features the advantages of little calculation,high rate of convergence and good stability.Experiments on the active-passive vibration isolation mounting show that,line-spectrums of several frequency combinations can be effectively attenuate;in addition,no obvious extra nonlinearity energy is induced at the harmonics after control.