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

Metadata

Show full item record

Item Usage Stats

248
views

0
downloads

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

Suggestions

OpenMETU
Core

Adaptive ride comfort and attitude control of vehicles equipped with active hydro-pneumatic suspension Saglam, Ferhat; Ünlüsoy, Yavuz Samim (2016-01-01) In this study, an active suspension for combined ride comfort and attitude control of a vehicle equipped with hydro-pneumatic (HP) suspension system is developed. The state-dependent Riccati equation (SDRE) control is employed in the design of the active suspension controller. A detailed sensitivity analysis is performed to examine the effects of the selection of weighting coefficients on the ride comfort and attitude control. According to the results of the sensitivity study, three different sets of fixed ...
State Dependent Riccati Equation Control of an Active Hydro Pneumatic Suspension System SAĞLAM, FERHAT; Ünlüsoy, Yavuz Samim (2014-10-01) In this study, a nonlinear active Hydro-Pneumatic (HP) suspension system is modelled. The HP suspension system model is then incorporated into the quarter car model and a nonlinear controller for the vehicle system is developed. A linear structured model with state dependent matrices of the nonlinear quarter car model is derived for use in controller design. A nonlinear control method, State Dependent Riccati Equation control (SDRE) is used to attenuate sprung mass acceleration, suspension deflection, and t...
Comparison of different active suspension control strategies using half car model Büyüker, Banu Çiçek; Bayar, Kerem; Department of Mechanical Engineering (2020-12-30) Among other advances in ground vehicle technology, active suspension systems play an important role in improving ride comfort, handling and road holding vehicles. Ride comfort is affected by vehicle motions, such as body bounce, pitch and roll, but also limiting wheel travel and suspension deflection is important for road holding performance. The main motivation of this study is designing different control strategies for active suspension systems equipped with a linear electric motor and making a comprehens...
Design and simulation of an integrated active yaw control system for road vehicles Tekin, Goekhan; Ünlüsoy, Yavuz Samim (2010-01-01) In this paper, design methodology and simulation results of an active yaw control system For road vehicles arc presented. The main objectives of the yaw control system arc to estimate the desired yaw behaviour of file vehicle according to the demand of file driver by means of a two degree-of-freedom vehicle model and track this desired yaw rate while considering vehicle steerability parameters. Based on vehicle yaw rate error and vehicle sideslip angle, the controller system applies brake torques to individ...
Optimization of ride comfort for vehicles equipped with passive and active hydro-pneumatic suspensions Sağlam, Ferhat; Ünlüsoy, Yavuz Samim; Department of Mechanical Engineering (2016) The main objective of this study is the optimization of ride comfort performance of vehicles equipped with Hydro-Pneumatic (HP) suspension systems. In order to improve ride comfort performance together with handling behavior as a constraint, active-passive, and unconnected-interconnected HP suspension systems are included in the study. The basic HP suspension model is developed and validated by experiments. Various HP suspension systems of increasing complexity are modeled, and their dynamic characteristics...

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.