主动控制中作动器非线性谐频的控制  

Control of Nonlinear Harmonic Frequency of Electromagnetic Actuator in Active Vibration Control

作　　者：谢强 帅长庚[1,2] 李彦 

机构地区：[1]海军工程大学振动与噪声研究所,武汉430033 [2]船舶振动噪声重点实验室,武汉430033

出　　处：《噪声与振动控制》2013年第1期56-58,共3页Noise and Vibration Control

摘　　要：采用主动隔振系统,能有效地控制低频线谱振动。在常规的作动器中,虽然可以有效地降低基频的振动;但二次谐波处产生的附加能量会影响隔振效果。通过理论分析与试验,研究了振动主动控制系统中电磁作动器的非线性现象,分析了进行低频线谱振动控制时电磁作动器在二次谐频处产生额外能量的原因,提出用谐波发生器自适应补偿作动器非线性现象的方法,结合前馈Fx LMS算法进行主动控制的试验表明,系统可得到较理想的控制效果。Use of active isolation system can effectively control low-frequency line-spectrum vibration. Although the base-frequency vibration can be reduced effectively in conventional actuators, the additional energy at secondary harmonic wave will influence the vibration isolation effect. In this paper, the nonlinear phenomena of electromagnetic actuator in active vibration control system were studied theoretically and experimentally. The reasons that the electromagnetic actuator can generate extra energy at the secondary harmonic frequency in the low-frequency line-spectrum vibration control were analyzed. The method of self-adaptive compensation of the nonlinear phenomena of the actuator using harmonic generator was proposed. Results of the experiment combined with the feedforward FxLMS algorithm in the active vibration-control system show that the control method is effective.

关 键 词：振动与波 主动隔振 电磁作动器 非线性 谐频 

分 类 号：TB53[理学—物理]