双腔固液混合介质隔振系统变刚度控制试验研究

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (4) : 88-93.

论文

李方硕，陈前，周俊辉

作者信息 +

Experimental study on the variable-stiffness control of dual-chamber solid and liquid mixture vibration isolator

LI Fang-shuo，CHEN Qian，ZHOU Jun-hui

Author information +

文章历史 +

摘要

双腔固液混合介质隔振器可以通过改变联通管道的节流面积调节隔振系统的动力学特性。设计了一个主动控制阀组，通过控制四个分支油路的通断可以实现对于整个油路节流开度的近似连续调节。对于不同节流开度下的隔振系统的动力学特性进行了实验研究，结果表明，通过改变控制阀组的流通特性，可以有效控制隔振器的刚度和阻尼特性。介绍了FEBC（frequency estimation based control）控制策略基本原理，并用不同方法对于振动信号基频的实时辨识进行了对比研究。最后基于FEBC控制策略，对于双腔隔振系统的半主动控制进行了实验研究，结果表明，通过变刚度半主动控制，可以有效的规避共振峰值，提高隔振系统的性能。

Abstract

The dynamic property of dual-chamber solid and liquid mixture vibration isolator can be easily adjusted by changing the section area of the oil tube which connects the two chambers. An active group valve containing four branches was designed to control the flow of oil flowing between the two chambers. Dynamic experiments for the novel isolator with different apertures were performed to verify the efficiency of the active group valve. The experimental result turned out that the stiffness and damping properties of the novel isolator could be effectively adjusted by actively control the group valve. Then, the FEBC strategy combing with various methods of identifying the base frequency of the vibrating signals were introduced. At last the semi-active control of the target isolator based on FEBC strategy was carried out experimentally. The test result showed that the semi-active system with stiffness-varying property did well in avoiding the resonance response and improving the isolation performance.

导出引用

李方硕，陈前，周俊辉. 双腔固液混合介质隔振系统变刚度控制试验研究[J]. 振动与冲击, 2018, 37(4): 88-93

LI Fang-shuo，CHEN Qian，ZHOU Jun-hui. Experimental study on the variable-stiffness control of dual-chamber solid and liquid mixture vibration isolator[J]. Journal of Vibration and Shock, 2018, 37(4): 88-93

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