Title: Analysis on hydraulic parameters of interconnected suspension based on fuzzy grey correlation

Authors: Chengyuan Ren; Kai Li

Addresses: Beijing Electric Vehicle Co., Ltd., Beijing, China ' Beijing Electric Vehicle Co., Ltd., Beijing, China

Abstract: In this paper, a 4 DOF hydraulically interconnected suspension roll frequency domain model is set up. The frequency response functions and a road surface model are set up to achieve responses such as vertical acceleration power spectral density and roll acceleration power spectral density. For the problem of the effect of hydraulic parameters on the hydraulically interconnected suspension response, a sensitivity analysis method based on fuzzy grey correlation is used and the influence degree of hydraulic parameters to vertical response and roll response is determined. The obtained results indicate that the valve connected to hydraulic chamber has a large impact on vertical vibration modal; accumulator and the valves connected to it make a large impact on roll vibration modal. This paper provides a theoretical basis for the selection of design variables in the optimisation of the suspension.

Keywords: hydraulically interconnected suspension; response spectral density matrix; sensitivity analysis; fuzzy grey correlation.

DOI: 10.1504/IJVNV.2017.086020

International Journal of Vehicle Noise and Vibration, 2017 Vol.13 No.1, pp.1 - 12

Received: 30 Jan 2016
Accepted: 20 Sep 2016
Published online: 21 Aug 2017 *

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