Linear and non-linear skyhook damping control laws for active railway suspensions

Hong Li, Roger M. Goodall

Research output: Contribution to journalArticlepeer-review

80 Citations (Scopus)


This paper presents and compares different control strategies for applying 'skyhook' damping control laws in active suspension systems for railway vehicles. It first examines a number of linear approaches for filtering the absolute velocity signal in order to optimise the trade-off between the random and deterministic track input requirements, and then what can be achieved using non-linear methods based upon Kalman-filters is explored. The principles that are developed are general and can be applied to both vertical and lateral secondary suspensions, although the paper concentrates upon the vertical direction and quantifies the performance achievable for a particular combination of track characteristics.

Original languageEnglish
Pages (from-to)843-850
Number of pages8
JournalControl Engineering Practice
Issue number7
Early online date16 Jul 1999
Publication statusPublished - Jul 1999
Externally publishedYes


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