Car-engine vibration isolation by feedback control and performance comparison based on analytical investigations

Bouzid Seba, Nikola Nedeljković, Boris Lohmann

Research output: Contribution to conferencePaperpeer-review

Abstract

The major purpose of the Engine-Noise control is to isolate the low frequency vibrations of the engine from the car structure. The objective of this work is to compare two possible actuator positions together with suitable control structures. The dynamic of the system describing the motion of the engine and the chassis in the plane are investigated through analytical models, and the two configurations are compared by means of frequency analysis tools. State feedback control is applied and a comparison study is provided using different system outputs such as the displacement (velocity and acceleration) and the relative displacement (relative velocity and relative acceleration). Then we propose the feedback-gain tuning using LQG method. Beside the state feedback control and LQG methods, also Hx approach is investigated for the obtained models. Finally the performances of the different approaches are discussed and compared. An experimental setup for one of the presented configurations is built and an H controller is implemented and tested.

Original languageEnglish
Pages861-868
Number of pages8
StatePublished - 2003
Externally publishedYes
EventProceedings of the Tenth International Congress on Sound and Vibration - Stockholm, Sweden
Duration: 7 Jul 200310 Jul 2003

Conference

ConferenceProceedings of the Tenth International Congress on Sound and Vibration
Country/TerritorySweden
CityStockholm
Period7/07/0310/07/03

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