Design and Analysis of a Controller Using Quantitative Feedback Theory for a Vehicle Air Suspension System

TL;DR

This paper develops a robust controller for vehicle air suspension using Quantitative Feedback Theory, focusing on uncertain dynamics and linearized models to improve system stability and performance.

Contribution

It introduces a QFT-based control design specifically tailored for uncertain and linearized vehicle air suspension systems, enhancing robustness.

Findings

Successfully designed a QFT controller for the suspension system.

Demonstrated improved robustness under varying conditions.

Validated the approach with simulations on a simplified model.

Abstract

This paper presents the design of a robust controller for a vehicle air suspension system using Quantitative Feedback Theory (QFT). This study is primarily focused on control of linearized active air suspension system. For the purpose of simplicity, the dynamics of the air suspension system is modeled using a simple 2-DOF quarter car model. Uncertain dynamic system with different working condition has been considered for the vehicle air suspension system.