Study on the vibration isolation characteristics of an anti‐resonant hydropneumatic suspension

Sohail, Aamir; Liu, Chunrong

doi:10.1049/joe.2018.9020

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…A hydropneumatic suspension is an integration of elastic elements and dampers, using an inert gas stored in an accumulator as the elastic medium and hydraulic oil as the load transfer medium of the dampers [1,2]. It has the functions of balancing load, generating damping vibration, and improving vehicle attitude [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of Hydropneumatic Suspension Simulation Test Bench with Electro-Hydraulic Proportional Control

Wu,

Jiao,

Sun

et al. 2023

Machines

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Available hydropneumatic suspension simulation test benches have insufficient loading accuracy and limited functionality rendering them unsuitable for performance testing of heavy vehicles with this type of suspension. Therefore, a multi-functional compound simulation test bench was designed that used an electro-hydraulic proportional control technique. A mathematical model was established to describe the hydraulic loading system, and the transfer function of the system was derived. The gain and phase margins confirmed the stability of the system. A simulation model was established in the Simulink environment and step and sine signals of different frequencies were applied separately to analyze the dynamic characteristics of the system. The results showed that the system responded slowly and exhibited phase lag and signal distortion. The dynamic characteristics of the system were improved by incorporating an adaptive fuzzy PID controller. Simulation results showed that the response of the system to the step signal stabilized at the preset value within 0.3 s with no oscillation or overshoot. The improved system performed well in replicating the random vibrations of heavy vehicles operating on Class B and C roads. This confirmed that the system can satisfy the loading requirements of heavy vehicle hydropneumatic suspensions and can be used as a simulation test bench for such suspensions.

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Section: Introductionmentioning

confidence: 99%

Design and Optimization of Hydropneumatic Suspension Simulation Test Bench with Electro-Hydraulic Proportional Control

Wu,

Jiao,

Sun

et al. 2023

Machines

View full text Add to dashboard Cite

show abstract

“…Sohail, A. [19] presented a novel anti-resonant hydropneumatic suspension system to achieve a better vibration isolation performance on different road conditions. Wang [20] established a performance-limit-oriented approach that provided a new design methodology for active vibration control.…”

Section: Introductionmentioning

confidence: 99%

Influences of Parameter Deviation on the Vibration Isolation System of an End Effector

Song

2022

Actuators

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The vibration problem influences the precision of the equipment. However, some vibration isolation systems (VISs) with the perfect theoretical and simulation results are still unable to suppress the vibration well, resulting in the damage during the operation, such as the phenomenon of fragments for the end effector of a glass substrate handling robot. Therefore, this paper focuses on the glass substrate handling robot in actual production and simplifies the VIS into a 2D (2 degree) system. From the analysis of the deviation of material parameters and installation deviations between vibration isolators, this paper concludes that, as long as there is a deviation, the vibration isolation performance of the system will be reduced. Through the mutually verified theory, simulation, and experimental structure, this paper also presents that the resonance frequency increase factor of the vibration isolation system is approximately the deviation. As for the end effector, the distance of the two vibration isolations is 579.4 mm. The change of the load does not change the isolation frequency of the same system, but the resonance amplitude will increase. The results of this study can supervise the installation and selection of vibration isolators in VISs. At the same time, the reasons for the weak vibration isolation performance of some systems are explained.

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Study on the vibration isolation characteristics of an anti‐resonant hydropneumatic suspension

Cited by 2 publications

References 10 publications

Design and Optimization of Hydropneumatic Suspension Simulation Test Bench with Electro-Hydraulic Proportional Control

Design and Optimization of Hydropneumatic Suspension Simulation Test Bench with Electro-Hydraulic Proportional Control

Influences of Parameter Deviation on the Vibration Isolation System of an End Effector

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