Development and control of a prototype pneumatic active suspension system

Anakwa, W.K.N.; Thomas, D.R.; Jones, S.C.; Bush, Jonathan; Green, D.; Anglin, G.W.; Rı́o, Rocı́o del; Sheng, Jixiang; Garrett, S. J.; Chen, L.

doi:10.1109/13.983220

Cited by 17 publications

(6 citation statements)

References 15 publications

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“…Zhu et al proposed an active acceleration control scheme to control the microgravity vibration isolation systems [4]. Anakwa et al developed and controlled a prototype pneumatic active suspension system using a pneumatic actuator for active damping [5]. However, active vibration isolation systems are less common than passive systems due to their associated cost, power requirements, complexity, and fail-safe problems.…”

Section: Introductionmentioning

confidence: 98%

Variable stiffness and damping magnetorheological isolator

Zhou

Wang

Zhang

et al. 2009

Front. Mech. Eng. China

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This paper presents the development and characterization of a magnetorheological (MR) fluidbased variable stiffness and damping isolator. The prototype of the MR fluid isolator is fabricated, and its dynamic behavior is measured under various applied magnetic fields. The parameters of the model under various magnetic fields are identified, and the dynamic performance of the isolator is evaluated in simulation. Experimental results indicate that both the stiffness and damping capability of the developed MR isolator can be controlled by an external magnetic field.

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Section: Introductionmentioning

confidence: 98%

Variable stiffness and damping magnetorheological isolator

Zhou

Wang

Zhang

et al. 2009

Front. Mech. Eng. China

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“…The stiffness and damping of the passive suspension cannot be adjusted automatically with the change in driving speed and road conditions and cannot achieve the desired performance under various working conditions. [1][2][3] Although the active suspension has strong adaptability and evident improvement of ride comfort and stability, it requires external energy supply which is more complex and costly than the semi-active suspension. 4,5 A semiactive suspension is extensively used in heavy vehicles given its low cost, simple manufacturing process and favourable damping effect.…”

Section: Introductionmentioning

confidence: 99%

Variable damping control strategy of a semi-active suspension based on the actuator motion state

Gong

Chen

2019

Journal of Low Frequency Noise, Vibration and Active Control

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A semi-active suspension variable damping control strategy for heavy vehicles is proposed in this work. First, a ninedegree-of-freedom model of a semi-active suspension of heavy vehicles and a stochastic road input mathematical model are established. Second, using a 1/6 vehicle as an example, a semi-active suspension system with damping that can be adjusted actively is designed using proportional relief and throttle valves. The damping dynamic characteristics of the semi-active suspension system and the time to establish the damping force are studied through a simulation. Finally, a variable damping control strategy based on an actuator motion state is proposed to adjust the damping force of the semi-active suspension system actively and therefore satisfy the vibration reduction requirements of different roads. Results show that the variable damping control suspension can substantially improve vehicle ride comfort and handling stability in comparison with a passive suspension.

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“…Since the first application of electronic technology to the vehicle air suspension system recorded in 1980s, electronic air suspension (EAS) system has gained wide attentions [1][2][3][4]. The main advantage of EAS system is the improvement of the vehicle dynamic performance, including the driving comfort, the handling stability and the fuel economy [5,6].…”

Section: Introductionmentioning

confidence: 99%

Fuzzy Sliding Mode Control for the Vehicle Height and Leveling Adjustment System of an Electronic Air Suspension

Sun

Cai

Yuan

et al. 2018

Chin. J. Mech. Eng.

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The accurate control for the vehicle height and leveling adjustment system of an electronic air suspension (EAS) still is a challenging problem that has not been effectively solved in prior researches. This paper proposes a new adaptive controller to control the vehicle height and to adjust the roll and pitch angles of the vehicle body (leveling control) during the vehicle height adjustment procedures by an EAS system. A nonlinear mechanism model of the full-car vehicle height adjustment system is established to reflect the system dynamic behaviors and to derive the system optimal control law. To deal with the nonlinear characters in the vehicle height and leveling adjustment processes, the nonlinear system model is globally linearized through the state feedback method. On this basis, a fuzzy sliding mode controller (FSMC) is designed to improve the control accuracy of the vehicle height adjustment and to reduce the peak values of the roll and pitch angles of the vehicle body. To verify the effectiveness of the proposed control method more accurately, the full-car EAS system model programmed using AMESim is also given. Then, the co-simulation study of the FSMC performance can be conducted. Finally, actual vehicle tests are performed with a city bus, and the test results illustrate that the vehicle height adjustment performance is effectively guaranteed by the FSMC, and the peak values of the roll and pitch angles of the vehicle body during the vehicle height adjustment procedures are also reduced significantly. This research proposes an effective control methodology for the vehicle height and leveling adjustment system of an EAS, which provides a favorable control performance for the system.

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Development and control of a prototype pneumatic active suspension system

Cited by 17 publications

References 15 publications

Variable stiffness and damping magnetorheological isolator

Variable stiffness and damping magnetorheological isolator

Variable damping control strategy of a semi-active suspension based on the actuator motion state

Fuzzy Sliding Mode Control for the Vehicle Height and Leveling Adjustment System of an Electronic Air Suspension

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