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Active Suspension

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Kou Fa-rong – One of the best experts on this subject based on the ideXlab platform.

  • Study on Simulation for Vehicle Electro-hydrostatic Active Suspension
    Computer Simulation, 2009
    Co-Authors: Kou Fa-rong
    Abstract:

    The structure of traditional electro-hydraulic servo Active Suspension is relatively complicated. As a result, these Active Suspension’s reliabilities drop. A kind of EHA (Electro-Hydrostatic Actuator) Active Suspension was proposed based on PBW (Power-By-Wire) technology. According to the analyses of EHA principle and Suspension structure, bond graph theory was applied to respectively build the bond graphs of controlled motor, hydraulic components, EHA and Active Suspension with EHA. The fuzzy control arithmetic and MATLAB tools were adopted and the simulations for EHA Active Suspension were carried out. And performance tests of developed Active Suspension with EHA were done. The simulation and experimental results show the established models of EHA Active Suspension are correct and EHA vehicle Active Suspension improves ride comfort, handling and stability of vehicle by the decline of vehicle vibration.

  • Control Research on Vehicle Active Suspension with EHA
    Tractor & Farm Transporter, 2009
    Co-Authors: Kou Fa-rong
    Abstract:

    EHA(Electro-Hydrostatic Actuator)technology in the aerospace field is introduced into vehicle Active Suspension.In addition,fuzzy control and self-adaptive fuzzy control algorithms for Active Suspension are designed.The simulation analyses are done and the effects of self-adaptive fuzzy control are proved.Physical prototype of Active Suspension and test system are developed.Finally,bench tests of Active Suspension are carried out under the inputs of simulation road.The experimental results with the similarity of simulation results show that self-adaptive fuzzy control strategy is feasible.Simulation and experimental results also show that the vibration of vehicle system is well controlled through EHA Active Suspension.

  • Test on fuzzy control for vehicle Active Suspension with EHA
    Journal of Xi'an University of Science and Technology, 2009
    Co-Authors: Kou Fa-rong
    Abstract:

    In order to improve passenger comfort and running safety and overcome such shortages of traditional hydraulic Active Suspension as complex structure and low reliability,EHA(Electro-Hydrostatic Actuator)technology in the field of aerospace is introduced into vehicle Active Suspension.According to the analyses of EHA principle and vehicle Suspension structure,mathematical model of vehicle Active Suspension with EHA was established.In addition,fuzzy control algorithm for Active Suspension was designed and the simulation analyses were done.Physical prototype of Active Suspension and test system were developed.Finally,bench tests of Active Suspension ware carried out under the inputs of simulation road.The experimental results show that the built model of EHA Active Suspension is credible and fuzzy control strategy is feasible.Experimental results also show that the vibration of vehicle system is well controlled through EHA Active Suspension.

Olivier Sename – One of the best experts on this subject based on the ideXlab platform.

  • Adaptive Semi-Active Suspension and Cruise Control through LPV Technique
    Applied Sciences, 2021
    Co-Authors: Hakan Basargan, Peter Gaspar, András Mihály, Olivier Sename
    Abstract:

    Several studies exist on topics of semi-Active Suspension and vehicle cruise control systems in the literature, while many of them just consider actual road distortions and terrain characteristics, these systems are not adaptive and their subsystems designed separately. This study introduces a new method where the integration of look-ahead road data in the control of the adaptive semi-Active Suspension, where it is possible to the trade-off between comfort and stability orientation. This trade-off is designed by the decision layer, where the controller is modified based on prehistorical passive Suspension simulations, vehicle velocity and road data, while the behavior of the controller can be modified by the use of a dedicated scheduling variable. The adaptive semi-Active Suspension control is designed by using Linear Parameter Varying (LPV) framework. In addition to this, it proposes designing the vehicle velocity for the cruise controller by considering energy efficiency and comfort together. TruckSim environment is used to validate the operation of the proposed integrated cruise and semi-Active Suspension control system.

  • Semi-Active Suspension control design for vehicles
    , 2010
    Co-Authors: Sergio Savaresi, Olivier Sename, Charles Poussot-vassal, Cristiano Spelta, Luc Dugard
    Abstract:

    Semi-Active Suspension systems promise simpler designs, weight efficiencies, and cost savings compared to the Active and adaptive Suspensions currently in use. With the growing emphasis on fuel economy, reduced CO2 emissions, and cost reductions for all vehicles, these semi-Active systems will be a growing part of overall vehicle design. Savaresi provides a comprehensive overview and treatment of semi-Active Suspension systems with an emphasis on performance analysis and control design. Several different approaches, using different control theories (either LPV or non-linear), are presented and evaluated. A methodology is presented to analyze and evaluate Suspension performances while identifying optimal performance bounds. Two innovative semi-Active Suspension strategies to enhance either comfort or roadholding performances are highlighted and analyzed.

  • An LPV Approach for Semi-Active Suspension Control
    , 2010
    Co-Authors: Olivier Sename, Luc Dugard, Sébastien Aubouet, Ricardo Ramirez-mendoza
    Abstract:

    In this paper, a new LPV control approach for semi-Active automotive Suspension equippedwith aMagneto- Rheological (MR) damper is presented. The interest of the approach is (1) to embed the model of semi-Active Suspension in a linear system design and (2) to allow limiting the damper force so that the controlled semi-Active Suspension works within its admissible region. First, a semi-Active Suspension model of an MR damper is reformulated in the LPV framework, which provides an LPV model for the vertical car behaviour. Then, by using the H1 control approach for polytopic systems, an LPV controller is synthesized to improve the passenger comfort while keeping the road-holding performances. The performances of the LPV controller are analyzed, based on simulations using the embedded nonlinear model of the MR damper

Jozsef Bokor – One of the best experts on this subject based on the ideXlab platform.

  • A New Semi-Active Suspension Control Strategy Through LPV Technique
    Control Engineering Practice, 2008
    Co-Authors: Charles Poussot-vassal, Olivier Sename, Luc Dugard, Peter Gaspar, Zoltan Szabo, Jozsef Bokor
    Abstract:

    This paper is concerned with the design and the analysis of a semi-Active Suspension controller. In the recent years different kinds of semi-Active control strategies, like two-state Skyhook, LQ-clipped or model-predictive control, have already been developed in the literature. In this paper, a new semi-Active Suspension control strategy that a priori satisfies the principal limitations of a semi-Active Suspension actuator (dissipative constraint and force bounds) is introduced using the tools of the linear parameter varying (LPV) theory. This new approach exhibits some interesting advantages (implementation, performance flexibility, robustness, etc.) compared to already existing methods. Both industrial criterion based evaluation and simulations on a nonlinear quarter vehicle model are performed to show the efficiency of the method and to validate the theoretical approach.

  • A LPV based semi-Active Suspension control strategy
    , 2007
    Co-Authors: Charles Poussot-vassal, Olivier Sename, Luc Dugard, Peter Gaspar, Zoltan Szabo, Jozsef Bokor
    Abstract:

    In this paper we consider the design and analysis of a semi-Active Suspension controller. In the recent years different kinds of semi-Active control strategies, like two-state Skyhook, LQ-clipped or model-predictive, have already been developed in the literature. In this paper we introduce a new semi-Active Suspension control strategy that achieves a priori limitations of a semi-Active Suspension actuator (dissipative constraint and force bounds) through the Linear Parameter Varying (LPV) theory. This new approach exhibits some interesting advantages compared to already existing methods (implementation, performance flexibility, robustness etc.). Both industrial criterion evaluation and simulations on nonlinear quarter vehicle model are performed to show the efficiency of the method and to validate the theoretical approach.

Luc Dugard – One of the best experts on this subject based on the ideXlab platform.

  • Semi-Active Suspension control design for vehicles
    , 2010
    Co-Authors: Sergio Savaresi, Olivier Sename, Charles Poussot-vassal, Cristiano Spelta, Luc Dugard
    Abstract:

    Semi-Active Suspension systems promise simpler designs, weight efficiencies, and cost savings compared to the Active and adaptive Suspensions currently in use. With the growing emphasis on fuel economy, reduced CO2 emissions, and cost reductions for all vehicles, these semi-Active systems will be a growing part of overall vehicle design. Savaresi provides a comprehensive overview and treatment of semi-Active Suspension systems with an emphasis on performance analysis and control design. Several different approaches, using different control theories (either LPV or non-linear), are presented and evaluated. A methodology is presented to analyze and evaluate Suspension performances while identifying optimal performance bounds. Two innovative semi-Active Suspension strategies to enhance either comfort or roadholding performances are highlighted and analyzed.

  • An LPV Approach for Semi-Active Suspension Control
    , 2010
    Co-Authors: Olivier Sename, Luc Dugard, Sébastien Aubouet, Ricardo Ramirez-mendoza
    Abstract:

    In this paper, a new LPV control approach for semi-Active automotive Suspension equippedwith aMagneto- Rheological (MR) damper is presented. The interest of the approach is (1) to embed the model of semi-Active Suspension in a linear system design and (2) to allow limiting the damper force so that the controlled semi-Active Suspension works within its admissible region. First, a semi-Active Suspension model of an MR damper is reformulated in the LPV framework, which provides an LPV model for the vertical car behaviour. Then, by using the H1 control approach for polytopic systems, an LPV controller is synthesized to improve the passenger comfort while keeping the road-holding performances. The performances of the LPV controller are analyzed, based on simulations using the embedded nonlinear model of the MR damper

  • A New Semi-Active Suspension Control Strategy Through LPV Technique
    Control Engineering Practice, 2008
    Co-Authors: Charles Poussot-vassal, Olivier Sename, Luc Dugard, Peter Gaspar, Zoltan Szabo, Jozsef Bokor
    Abstract:

    This paper is concerned with the design and the analysis of a semi-Active Suspension controller. In the recent years different kinds of semi-Active control strategies, like two-state Skyhook, LQ-clipped or model-predictive control, have already been developed in the literature. In this paper, a new semi-Active Suspension control strategy that a priori satisfies the principal limitations of a semi-Active Suspension actuator (dissipative constraint and force bounds) is introduced using the tools of the linear parameter varying (LPV) theory. This new approach exhibits some interesting advantages (implementation, performance flexibility, robustness, etc.) compared to already existing methods. Both industrial criterion based evaluation and simulations on a nonlinear quarter vehicle model are performed to show the efficiency of the method and to validate the theoretical approach.

Charles Poussot-vassal – One of the best experts on this subject based on the ideXlab platform.

  • Semi-Active Suspension control design for vehicles
    , 2010
    Co-Authors: Sergio Savaresi, Olivier Sename, Charles Poussot-vassal, Cristiano Spelta, Luc Dugard
    Abstract:

    Semi-Active Suspension systems promise simpler designs, weight efficiencies, and cost savings compared to the Active and adaptive Suspensions currently in use. With the growing emphasis on fuel economy, reduced CO2 emissions, and cost reductions for all vehicles, these semi-Active systems will be a growing part of overall vehicle design. Savaresi provides a comprehensive overview and treatment of semi-Active Suspension systems with an emphasis on performance analysis and control design. Several different approaches, using different control theories (either LPV or non-linear), are presented and evaluated. A methodology is presented to analyze and evaluate Suspension performances while identifying optimal performance bounds. Two innovative semi-Active Suspension strategies to enhance either comfort or roadholding performances are highlighted and analyzed.

  • A New Semi-Active Suspension Control Strategy Through LPV Technique
    Control Engineering Practice, 2008
    Co-Authors: Charles Poussot-vassal, Olivier Sename, Luc Dugard, Peter Gaspar, Zoltan Szabo, Jozsef Bokor
    Abstract:

    This paper is concerned with the design and the analysis of a semi-Active Suspension controller. In the recent years different kinds of semi-Active control strategies, like two-state Skyhook, LQ-clipped or model-predictive control, have already been developed in the literature. In this paper, a new semi-Active Suspension control strategy that a priori satisfies the principal limitations of a semi-Active Suspension actuator (dissipative constraint and force bounds) is introduced using the tools of the linear parameter varying (LPV) theory. This new approach exhibits some interesting advantages (implementation, performance flexibility, robustness, etc.) compared to already existing methods. Both industrial criterion based evaluation and simulations on a nonlinear quarter vehicle model are performed to show the efficiency of the method and to validate the theoretical approach.

  • A LPV based semi-Active Suspension control strategy
    , 2007
    Co-Authors: Charles Poussot-vassal, Olivier Sename, Luc Dugard, Peter Gaspar, Zoltan Szabo, Jozsef Bokor
    Abstract:

    In this paper we consider the design and analysis of a semi-Active Suspension controller. In the recent years different kinds of semi-Active control strategies, like two-state Skyhook, LQ-clipped or model-predictive, have already been developed in the literature. In this paper we introduce a new semi-Active Suspension control strategy that achieves a priori limitations of a semi-Active Suspension actuator (dissipative constraint and force bounds) through the Linear Parameter Varying (LPV) theory. This new approach exhibits some interesting advantages compared to already existing methods (implementation, performance flexibility, robustness etc.). Both industrial criterion evaluation and simulations on nonlinear quarter vehicle model are performed to show the efficiency of the method and to validate the theoretical approach.