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Design and performance research of a hydro-pneumatic suspension with variable dam** and stiffness characteristics

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Abstract

This research proposes a novel hydro-pneumatic suspension structure based on high-speed on-off solenoid valves, which can realize two spring force modes and four dam** force modes. The basic working principles of the HPS with multiple output force modes are analyzed to establish the dam** and stiffness features mathematical models. Based on the parameters taken from a mine dump truck, the stiffness coefficient and dam** coefficient of the proposed HPS are matched firstly, then the initial charging pressure of accumulators and the diameter of throttle valves are determined. Finally, the validity of the proposed model is demonstrated by comparing the force-displacement and the force-velocity responses of the model with the corresponding measured experimental data under a broad range of excitations.

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Abbreviations

f :

Natural frequency of suspension

m u :

Sprung mass

K s :

Stiffness of HPS

P :

Instantaneous pressure of accumulator

P 0 :

Initial gas pressure of accumulator

V :

Instantaneous gas volume of accumulator

V 0 :

Initial gas volume of accumulator

r :

Gas polytropic index

ΔX :

Piston position height variation

ΔV :

Gas volume change of accumulator

S g :

Cross sectional area of accumulator

K g :

Stiffness of accumulator

S 1 :

Area of rodless cavity

ξ :

Dam** ratio

C S :

Optimum dam** coefficient

P 1 :

Pressure of rodless cavity

P 2 :

Pressure of rod cavity

S 2 :

Area of rod cavity

P A0 :

Initial pressure of accumulator A

V A :

Instantaneous gas volume of accumulator A

P A :

Instantaneous pressure of accumulator A

V A0 :

Initial gas volume of accumulator A

X :

Displacement of piston

P B :

Instantaneous pressure of accumulator B

P B0 :

Initial pressure of accumulator B

V B :

Instantaneous gas volume of accumulator B

V B0 :

Initial gas volume of accumulator B

F k1 :

Soft elastic force

K 1 :

Soft stiffness

F k2 :

Hard elastic force

K 2 :

Hard stiffness

Q :

Oil flow through damper valve

C d :

Discharge coefficient

ρ :

Oil density

A z4 :

Area of throttle hole 4

A z5 :

Area of throttle hole 5

A z6 :

Area of throttle hole 6

A d :

Hole area of check valve

F :

Output force of HPS

F c1 :

Dam** force of mode 1

F c2 :

Dam** force of mode 2

F c3 :

Dam** force of mode 3

F c4 :

Dam** force of mode 4

F S :

Maximum static output force

d :

Piston rod diameter

D :

Cylinder diameter

λ d :

Ratio value of piston rod outer diameter to hydraulic cylinder diameter

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Acknowledgments

This work was supported by the National Key Research and Development Program of China (Project No. 2020YFC1512403) and the International Science and Technology Cooperation Program of Jiangsu Province (Project No BZ2022055).

Author information

Authors and Affiliations

  1. School of Electrical and Information Engineering, Jiangsu University, Zhenjiang, 212013, China

    Chunfang Yin

  2. Automotive Engineering Research Institute, Jiangsu University, Zhenjiang, 212013, China

    Xuhui Zhai, **aoqiang Sun & Shaohua Wang

  3. Department of Electromechanical Engineering, University of Macau, Taipa, 999078, Macau

    Pak Kin Wong

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  1. Chunfang Yin
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Corresponding author

Correspondence to Shaohua Wang.

Additional information

Chunfang Yin received the B.Sc. degree in Electrical Engineering, and the M.Sc. and Ph.D. degrees in Control Theory and Control Engineering from Jiangsu University, Zhenjiang, China, in 1999, 2004, and 2019, respectively. She is currently an Associate Professor with the School of Electrical and Information Engineering, Jiangsu University, Zhenjiang, China. Her research interests mainly include advanced suspension systems and dynamics control.

Xuhui Zhai received the Bachelor’s degree in Vehicle Engineering from Inner Mongolia University of Science and Technology in Baotou, China in June 2017, and is currently studying for a Master’s degree in Vehicle Engineering. His research interests include hydro pneumatic suspension.

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Yin, C., Zhai, X., Sun, X. et al. Design and performance research of a hydro-pneumatic suspension with variable dam** and stiffness characteristics. J Mech Sci Technol 36, 4913–4923 (2022). https://doi.org/10.1007/s12206-022-0905-0

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  • DOI: https://doi.org/10.1007/s12206-022-0905-0

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