Analysis and design of active suspensions by HINF robust control theory

Antonio Moran, Masao Nagai

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


This paper presents a new design method for an active suspension control system based on H optimization robust control theory. A four-degrees-of-freedom half-car model equipped with independently controlled from and rear active suspensions is analyzed. Time, frequency and spectral analyses show that the active suspension maintains the tire-road contact force for good maneuvering, stability and handling, reduces the vibration transmissibility and attenuates the passenger-perceived acceleration, improving the ride comfort. The robustness properties of the H-optimization-based suspension controller are examined and compared with those of a conventional LQC-based active suspension.

Original languageEnglish
Pages (from-to)427-437
Number of pages11
JournalJSME International Journal, Series 3: Vibration, Control Engineering, Engineering for Industry
Issue number3
StatePublished - 1992
Externally publishedYes


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