Analysis of automotive rolling lobe air spring under alternative factors with finite element model

Wong, Pak Kin; Xie, Zhengchao; Zhao, Jing; Xu, Tao; Feng, He

doi:10.1007/s12206-014-1128-9

Cited by 37 publications

(15 citation statements)

References 13 publications

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“…In the half-vehicle suspension model, the air spring used is a rolling lobe air spring (RLAS), and its modeling details can be found in Xie et al 14 and Wong et al 28 So, the modeling process is not presented here and the corresponding parameters used for air spring model can be referred to a normal passenger vehicle.…”

Section: Dynamic Modelingmentioning

confidence: 99%

Design and analysis of an integrated sliding mode control–two-point wheelbase preview strategy for a semi-active air suspension with stepper motor-driven gas-filled adjustable shock absorber

Zhao

Wong²,

Ma³

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part I:

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This article proposes an integrated sliding mode control-two-point wheelbase preview strategy for semi-active air suspension system with gas-filled adjustable shock absorber. First of all, a vehicle suspension model with rolling lobe air spring and gas-filled adjustable shock absorber is built, following with a road input model for the front wheel. By describing the detailed structure and working process of the gas-filled adjustable shock absorber, the regulating mechanism between the stepper motor and the designed gas-filled adjustable shock absorber is established. Subsequently, the sliding mode control algorithm is applied to generate the desired damping force with the real-time state of the vehicle. Moreover, to predetermine the road profile for the rear wheel, a two-point wheelbase preview approach is proposed and its superiority is also illustrated as compared with the conventional single-point wheelbase preview approach. To evaluate the performance of the proposed system, numerical analysis is conducted with other three comparative schemes, namely, passive suspension system, active suspension system with H infinity control, and sliding mode controlcontrolled semi-active air suspension system with adjustable shock absorber. Simulation results show that the integrated sliding mode control-two-point wheelbase preview strategy can be successfully utilized in the semi-active air suspension system with stepper motor-driven gas-filled adjustable shock absorber, and the vehicle performance with the proposed system can be greatly improved.

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Section: Dynamic Modelingmentioning

confidence: 99%

Design and analysis of an integrated sliding mode control–two-point wheelbase preview strategy for a semi-active air suspension with stepper motor-driven gas-filled adjustable shock absorber

Zhao

Wong²,

Ma³

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part I:

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the quarter car suspension model, the air spring used is a rolling lobe air spring, and its modeling details can be found in [8]. So, the modeling process is not presented here and the corresponding parameters used for the air spring modeling can be referred to a normal passenger vehicle.…”

Section: Quarter Car Dynamic Modelmentioning

confidence: 99%

Damping Force Control of A Semi-active Suspension System Using Cuckoo Search Optimized PID Method

Wong¹,

Ma²,

Zhao³

et al. 2017

Proceedings of the Second International Conference on Mechanics, Materials and Structural Engineering (ICMMSE 2017)

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Abstract. In the automotive engineering, semi-active suspension (SAS) system has been one of the most attractive research projects. The SAS system usually refers to the damping force control using an adjustable damper. This research proposes a cuckoo search optimized proportionalintegral-derivative (CS-PID) strategy for the damping force control system in order to improve the vehicle performance under different driving conditions and to improve the handling stability and smoothness of driving. Firstly, a quarter car dynamic model with an air spring and an adjustable damper is developed. Subsequently, the CS-PID controller is designed to generate the desired damping force according to the vehicle states in a real-time. Simulation results reveal that the vehicle performance can be greatly improved with the proposed controller.

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“…However, their models were developed without considering the dynamic characteristics caused by the behavior of the twisted cord rubber material of the air spring under the external disturbances. The authors of [9] conducted several experiments to analyze the twisted cord rubber material of the air spring with alternative cord angles and cord diameters for building a numerical model. However, this model was built using the finite element method, so it cannot be utilized for the ride height control (RHC) system.…”

Section: Introductionmentioning

confidence: 99%

Robust Ride Height Control for Active Air Suspension Systems With Multiple Unmodeled Dynamics and Parametric Uncertainties

Zhao¹,

Xie

Wong³

et al. 2019

IEEE Access

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This paper addresses the problem of ride height tracking for an electronically-controlled active air suspension (AAS) system in the presence of parametric uncertainties and unmodeled dynamics. A mathematical model of a quarter vehicle with AAS system is first built on the basis of thermodynamics to describe the dynamic characteristics. Then, by employing the backstepping technique, a novel height tracking controller is proposed in order to guarantee that 1) the ride height of a vehicle can converge on a neighborhood of the desired height, achieving global uniform ultimate boundedness (GUUB); 2) the controller is robust to the parametric uncertainties by designing parameter estimators and introducing some conservativeness in the control law to dominate the unmodeled dynamics. Moreover, a group of smooth projectors is used to ensure all estimates remain within predefined corresponding bounds. To validate the efficiency and performance of the proposed strategy, the simulation and experimental results are presented and analyzed, showing that the proposed control strategy is superior to the PID controller and the recently proposed hybrid model predictive controller. INDEX TERMS Active air suspension, pneumatic system, automobile height control, robust control, parameter estimation.

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Analysis of automotive rolling lobe air spring under alternative factors with finite element model

Cited by 37 publications

References 13 publications

Design and analysis of an integrated sliding mode control–two-point wheelbase preview strategy for a semi-active air suspension with stepper motor-driven gas-filled adjustable shock absorber

Design and analysis of an integrated sliding mode control–two-point wheelbase preview strategy for a semi-active air suspension with stepper motor-driven gas-filled adjustable shock absorber

Damping Force Control of A Semi-active Suspension System Using Cuckoo Search Optimized PID Method

Robust Ride Height Control for Active Air Suspension Systems With Multiple Unmodeled Dynamics and Parametric Uncertainties

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