Modeling of Gas Charging and Discharging for Airbag Suspension System and Control of Height Adjustment South China University of Technology

Format:

Book

Conference/Event

Author/Creator:

Deng, Lin, author.

Contributor:

Lv, Hui

Shangguan, Wenbin

Conference Name:

WCX SAE World Congress Experience (2023-04-18 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2023

Summary:

Taking a closed airbag suspension system as studying objects, the nonlinear dynamic model of the reservoir, compressor, solenoid valve, pipeline and air spring is established. The compressor exhaust volume, solenoid valve flow rate and air spring charging and discharging rate are calculated and compared with experiment to validate the model. Taking pressure difference and height adjustment rate under different working conditions of an airbag suspension as control measures, a control strategy is developed based on the established nonlinear dynamic model. The result indicates that when the vehicle is in curb weight, design weight and GVW (gross vehicle weight), the working time of the compressor can be reduced by 13.6%, 15.1% and 46.5%, respectively, compared with the conventional mode, during a height adjustment cycle. Then a state observer is proposed to estimate the steady-height for reducing the disturbance of measured height from road excitation. According to the required height error and pipeline pressure, a method for adjusting compressor speed to reduce the influence of pipeline pressure on height adjustment accuracy is proposed

Notes:

Vendor supplied data

Publisher Number:

2023-01-0660

Access Restriction:

Restricted for use by site license