颤振主动抑制系统开环模型的进一步降阶及其参数摄动

More Reduced-order Model and Parameter Perturbation for Active Flutter Suppression System

运用保留模态法对颤振主动抑制系统(AFSS)作了进一步降阶处理,并用最小二乘拟合法得到了降阶模型的参效摄动误差表达式。数值算例表明,对选定的计算项目,本文给出的降阶模型和参数摄动误差表达式,在AFSS的参数摄动范围内,与全阶模型非常接近,可用来进行AFSS其它项目设计和分析。

Based upon paper [1], the more reduced-order model and parameter perturbation for active flutter suppression system (AFSS) is obtained by retaining key modes of the system and appllying the least-squares technique. The method is demonstrated using a 9-mode AFSS example, numerical results show that the reduced model is a good approximation of full model.