Title: Isolation efficiency of the EV seat's suspension using the various NSE modes

Authors: Changpei Shang; Vanliem Nguyen; Jili Zha; Yuanyuan Niu

Addresses: School of Mechanical Engineering, Henan Polytechnic Institute, Nanyang 473000, China ' Hubei Key Laboratory of Intelligent Conveying Technology and Device, Hubei Polytechnic University, Huangshi, 435003, China ' School of Mechanical and Electric Engineering, Hubei Polytechnic University, Huangshi, 435003, China ' School of Automotive and Aeronautical Engineering, Henan Polytechnic Institute, Nanyang 47300, China

Abstract: To compare the efficiency of the operator's seat suspension of the electric vehicles using the control isolation systems, vehicle's control isolations and seat suspension equipped with negative-stiffness-element designed by tuned-mass-damper (C-TMD-NSE) and air-piston (C-AP-NSE) are proposed to improve the operator's ride quality. The vehicle's vibration model has been built based on excitations from road surfaces and in-wheel motors. The efficiency of C-TMD-NSE and C-AP-NSE is estimated through the reduction of the root-mean-square acceleration of the operator's seat (aws). The results indicate that C-TMD-NSE and C-AP-NSE embedded in the vehicle's isolation systems ameliorate ride quality better than without C-NSE. Besides, aws with C-AP-NSE is also decreased compared to C-TMD-NSE under the changes of road surfaces and total mass of the in-wheel motor and rotor's eccentricity. Particularly, aws with C-AP-NSE is smaller than that of C-TMD-NSE by 27%. Thus, the C-AP-NSE could be supported into seat's suspension to ameliorate vehicle's ride efficiency.

Keywords: electric vehicles; air-pistons; AP; tuned-mass-damper; TMD; negative-stiffness-element; NSE; control isolation systems; operator's seat suspension; ride efficiency.

DOI: 10.1504/IJVNV.2023.136062

International Journal of Vehicle Noise and Vibration, 2023 Vol.19 No.3/4, pp.165 - 183

Received: 16 Nov 2022
Accepted: 31 Jan 2023

Published online: 15 Jan 2024 *

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