刚度自调谐宽频动力吸振器设计与试验研究

打开文本图片集

关键词：动力吸振器；宽频；参数优化；改进麻雀搜索算法（ISSA）；PID控制中图分类号：TB535.1DOI：10.3969/j.issn.1004-132X.2025.11.014

Abstract： To address the issues of traditional dynamic absorbers losing resonance and exhibiting a sig nificant decline in vibration reduction performance when the external excitation frequency shifted，a novel wideband dynamic vibration absorber was designed that altered the stiffness to change the natural frequency，and to broaden the vibration absorption bandwidth. The vibration absorption and frequency adjustment mechanism of the absorbers were theoretically analyzed，followed by PID parameter optimization by using an ISSA，finally，an ISSA-PID controller was employed to adjust the structural parameters of the absorbers，achieving adaptive wideband vibration absorption. Simulation results indicate that the ISSA optimization requires fewer iterations and demonstrates greater optimization capability compared to the sparrow search algorithm（SSA） optimization. The control scheme optimized by ISSA reduces the overshoot by （204号 44.8% compared to that of the pre-optimization condition and reduces by 33.3% compared to that of the SSA-optimized scheme. In addition，the setling time of the control scheme optimized by ISSA is reduced by 16.2% compared to that of the SSA-optimized scheme. The testing results indicate that the wideband dynamic vibration absorber has a wide vibration absorption bandwidth and significant vibration reduction effectiveness，demonstrating substantial engineering application value.

Key words：dynamic vibration absorber；wideband；parameter optimization；improved sparrow searchalgorithm（ISSA）；PID control

0 引言

动力吸振器是一种简单有效的减振设备，已在多个领域得到广泛应用。（剩余12280字）