Analysis and Design of Passive and Active Interconnected Hydro Pneumatic Suspension Systems in Roll Plane

Date

2015-05-19

Author

Sağlam, Ferhat
Ünlüsoy, Yavuz Samim

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In this study, analysis and design of a half car model in roll plane with passive and active unconnected and interconnected Hydro-Pneumatic (HP) suspension systems are made. An interconnection configuration with a connection between the piston side oil volume and rod side oil volume of the right and left suspensions, respectively, is considered. The performance of the active unconnected HP and interconnected HP suspension systems are compared in terms of ride comfort and handling. Nonlinear mathematical models are developed for each suspension configuration. A state space model with state dependent coefficients is derived using extended linearization to be used in the controller design. A nonlinear control method, State Dependent Riccati Equation (SDRE) control is used for the active controllers. The active controllers are designed to improve the ride comfort and handling, and to control the attitude and leveling of the vehicle. The performances of the controllers are evaluated by time and frequency domain simulations. Comparisons of the active and passive, unconnected and interconnected HP suspension systems with respect to ride comfort and handling are performed to evaluate the relative advantage and disadvantage of each type. The results illustrate the advantages as well as disadvantages of the active interconnected HP suspension system as compared with the other suspension configurations.

Subject Keywords

Hydro-pneumatic suspension, Active suspension, Interconnected suspension, Ride comfort, Vehicle handling, Attitude and leveling control, Nonlinear control, State dependent riccati equation control

URI

http://www.icens2015.com/sites/default/files/book-final-_last_version.pdf
https://hdl.handle.net/11511/73384

Conference Name

ICENS 2015 International Conference on Engineering and Natural Sciences (15 - 19 Mayıs 2015)

Collections

Graduate School of Natural and Applied Sciences, Conference / Seminar

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Citation Formats

F. Sağlam and Y. S. Ünlüsoy, “Analysis and Design of Passive and Active Interconnected Hydro Pneumatic Suspension Systems in Roll Plane,” presented at the ICENS 2015 International Conference on Engineering and Natural Sciences (15 - 19 Mayıs 2015), 2015, Accessed: 00, 2021. [Online]. Available: http://www.icens2015.com/sites/default/files/book-final-_last_version.pdf.