Disturbance propagation in vehicle strings

Pete Seiler, Aniruddha Pant, Karl Hedrick

Research output: Contribution to journalArticlepeer-review

523 Scopus citations


This note focuses on disturbance propagation in vehicle strings. It is known that using only relative spacing information to follow a constant distance behind the preceding vehicle leads to string instability. Specifically, small disturbances acting on one vehicle can propagate and have a large effect on another vehicle. We show that this limitation is due to a complementary sensitivity integral constraint. We also examine how the disturbance to error gain for an entire platoon scales with the number of vehicles. This analysis is done for the predecessor following strategy as well as a control structure where each vehicle looks at both neighbors.

Original languageEnglish (US)
Pages (from-to)1835-1841
Number of pages7
JournalIEEE Transactions on Automatic Control
Issue number10
StatePublished - Oct 2004


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