Design of a disturbance observer based control system to ensure robust stability of quarter-car suspensions

Sang Gyun So; Jung Rae Ryoo; Tae Yong Doh

doi:10.5302/J.ICROS.2016.16.0184

Design of a disturbance observer based control system to ensure robust stability of quarter-car suspensions

Sang Gyun So, Jung Rae Ryoo, Tae Yong Doh

Dept. of Electrical and Information Engineering

Hanbat National University

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The vehicle suspension system plays a very important part related with vehicle ride and handling. To improve the vehicle ride and handling many researches have been progressed from various damping parameter tuning techniques to the development of the electronic controlled suspension systems. In this paper, as one of the ride performance improvement a disturbance observer(DOB) based control system is applied to the quarter car vehicle model in order to show that the DOB can obtain good vibration isolation characteristics. First, the robust stability criterion for the DOB is introduced in detail, and then how DOB is applied to the 1/4 car vehicle model is represented, and finally to confirm the effectiveness of the DOB in vehicle ride performance improvement a computer simulation is carried out for various driving conditions.

Original language	English
Pages (from-to)	995-1001
Number of pages	7
Journal	Journal of Institute of Control, Robotics and Systems
Volume	22
Issue number	12
DOIs	https://doi.org/10.5302/J.ICROS.2016.16.0184
State	Published - 2016

Keywords

Disturbance observer
Q filter
Quarter car
Robust performance
Robust stability
Tracking errors
Uncertainties
Vibration isolation

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10.5302/J.ICROS.2016.16.0184

Cite this

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title = "Design of a disturbance observer based control system to ensure robust stability of quarter-car suspensions",

abstract = "The vehicle suspension system plays a very important part related with vehicle ride and handling. To improve the vehicle ride and handling many researches have been progressed from various damping parameter tuning techniques to the development of the electronic controlled suspension systems. In this paper, as one of the ride performance improvement a disturbance observer(DOB) based control system is applied to the quarter car vehicle model in order to show that the DOB can obtain good vibration isolation characteristics. First, the robust stability criterion for the DOB is introduced in detail, and then how DOB is applied to the 1/4 car vehicle model is represented, and finally to confirm the effectiveness of the DOB in vehicle ride performance improvement a computer simulation is carried out for various driving conditions.",

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AB - The vehicle suspension system plays a very important part related with vehicle ride and handling. To improve the vehicle ride and handling many researches have been progressed from various damping parameter tuning techniques to the development of the electronic controlled suspension systems. In this paper, as one of the ride performance improvement a disturbance observer(DOB) based control system is applied to the quarter car vehicle model in order to show that the DOB can obtain good vibration isolation characteristics. First, the robust stability criterion for the DOB is introduced in detail, and then how DOB is applied to the 1/4 car vehicle model is represented, and finally to confirm the effectiveness of the DOB in vehicle ride performance improvement a computer simulation is carried out for various driving conditions.

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KW - Uncertainties

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Design of a disturbance observer based control system to ensure robust stability of quarter-car suspensions

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