摘要
对含时滞的单自由度半主动开关控制悬架系统进行了研究。首先对系统进行无量纲化处理,然后利用平均法求出了系统方程的一次近似解析解。通过解析解与数值解得到的幅频曲线进行比较,验证了所提出方法和结果的正确性。最后对系统的稳定性做了分析,得到了导致系统产生不稳定运动的条件和临界时滞,发现系统的稳定性随着时滞会发生周期性变化。
A single degree-of-freedom （SDOF） semi-active on-off control suspension system with time-delay was studied here. After its dimensionless form was deduced, the first-order approximately analytical solution was obtained with the averaging method. The comparison of the amplitude-frequency curves obtained with the analytical solution and the numerical one showed the correctness of the proposed method. instability condition and the critical time-delay were gained. The was also illustrated. At last, the system stability was analyzed, and the periodical change of the system stability with time-delay
出处
《振动与冲击》
EI
CSCD
北大核心
2012年第24期38-40,共3页
Journal of Vibration and Shock
基金
国家自然科学基金(11072158
10932006)
河北省杰出青年科学基金(E2010002047)
教育部新世纪优秀人才项目
教育部创新团队发展计划项目(IRT0971)资助
关键词
半主动悬架
开关控制
时滞
平均法
稳定性
semi-active suspension
on-off control
time-delay
averaging method
stability
