Ⅲ-conditioned stable inversion arising from singularly perturbed Zero dynamics
Xuemei GUO
Guoli WANG
摘要：The ill-conditioned stable inversion is studied for slightly nonminimum phase systems whose zero dynamics is singularly perturbed,that is,the relative degree is ill-defined.For these systems,we show that there exists an inherent limitation in the bandwidth of a reference trajectory to be tracked when a well-conditioned feedforward input via stable inversion is sought.We assert that,when the violation of this limimtion occurs,the so-called reference trajectory redesign ia called for.Our analysis results can provide an explicit assessment as well as useful guidance for the reference trajectory redesign if needed.
机标关键词：Zero dynamicssingularly perturbednonminimum phaserelative degreezero dynamics
资助基金：the National Natural Science Foundation of China(60473120)the Natural Science Foundation of Guangdong(6023190)
论文发表日期：2008-01-01
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：7( 385-391 )
英文信息