Vibration Control of Vehicle by Active Suspension with LQG Algorithm

  • O. Gomonwattanapanich Department of Mechanical Engineering, Faculty of Engineering, Thammasat University, Thailand. Phone: 03-8259050-55
  • N. Pannucharoenwong Department of Mechanical Engineering, Faculty of Engineering, Thammasat University, Thailand. Phone: 03-8259050-55
  • P. Rattanadecho Department of Mechanical Engineering, Faculty of Engineering, Thammasat University, Thailand.
  • S. Echaroj Department of Mechanical Engineering, Faculty of Engineering, Thammasat University, Thailand.
  • S. Hemathulin Department of Mechanical and Industrial, Faculty of Industrial Technology, Rajabhat Sakon Nakhon University, Thailand
Keywords: Passive suspension, Active suspension, Linear quadratic Gaussian, Vibration, Ride performance

Abstract

In this paper, the ride performance of a vehicle with active suspension and Linear Quadratic Gaussian (LQG) controller has been studied and is compared to the performances of a traditional passive suspension system. The study includes variables that are related to a passenger’s comfort: vertical position, vertical velocity, pitch angle, pitch velocity, roll angle, and roll velocity. The performances of the two systems are evaluated by maximum values and root mean square (RMS) of the variables when riding on a sinusoidal road profile. The simulation results show that the vehicle with active suspension and LQG controller performs better than passive suspension system where the maximum values decrease by 85.77%, 92.73%, 50.31% 86.83%, 89.41%, 43.28%, and RMS values decrease by 88.59%, 92.36%, 42.99%, 87.61%, 90.85%, and 42.79% for vertical position, vertical velocity, pitch angle, pitch velocity, roll angle, and roll velocity, respectively.

Published
2020-07-11
How to Cite
Gomonwattanapanich, O., Pannucharoenwong, N., Rattanadecho, P., Echaroj, S., & Hemathulin, S. (2020). Vibration Control of Vehicle by Active Suspension with LQG Algorithm. International Journal of Automotive and Mechanical Engineering, 17(2), 8011-8018. https://doi.org/10.15282/ijame.17.2.2020.19.0600
Section
Articles