Research on H2/H∞ control of automotive active suspension with preview information under pitch moment

doi:10.16731/j.cnki.1671-3133.2024.03.008

Abstract

Abstract: Compared to passive suspension,active suspension has an additional device that can generate active force,effectively adjusting stiffness and damping in uneven road conditions,improving the shock absorption performance and riding comfort of the vehicle chassis. The wheelbase preview information is considered and the principle of Linear Matrix Inequality (LMI) is used for reference to establish the model of the half car active suspension under the action of pitching torque,and the traditional H₂/H_∞ state feedback controller and the H₂/H_∞ state feedback controller with preview information are designed. The multi-objective optimization control of the active suspension is carried out,and the performance of the two controllers is simulated in the time domain. The results indicate that both controllers can effectively optimize the performance parameters of the active suspension,but the H₂/H_∞ state feedback controller considering preview information has a more prominent optimization ability.

Key words: active suspension, state feedback control, wheelbase preview, H₂/H_∞ control

CLC Number:

TP391.9

FU Datian, YUAN Chunyuan, YAN Junjun, ZHU Aixin. Research on H₂/H_∞ control of automotive active suspension with preview information under pitch moment[J]. Modern Manufacturing Engineering, 2024, 522(3): 54-61.

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Research on H₂/H_∞ control of automotive active suspension with preview information under pitch moment

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