Author(s): A. M. Abdel Ghany | A. S. Emam
Journal: Advances in Molecular Imaging
ISSN 2161-6728
Volume: 04;
Issue: 02;
Start page: 126;
Date: 2012;
Original page
Keywords: Mixed H2/H∞ | Semi Active Suspension | Pole-Placement | Ride Quality | Linear Matrix Inequality (LMI)
ABSTRACT
The aim of the present work is to illustrate the application of mixed H2/H∞ control theory with Pole-Placement in de- signing controller for semi-active suspension system. It is well known that the ride comfort is improved by reducing vehicle body acceleration generated by road disturbance. In order to study this phenomenon, Two Degrees of Freedom (DOF) in state space vehicle model was built in. However, the role of H is to minimize the disturbance effect on the output while H2 is used to improve the input of controller. Linear Matrix Inequality (LMI) technique is used to calculate the dynamic controller parameters. The simulation results show that the H2 and H techniques can effectively control the vibration of vehicle system where the reduction of suspension working space, dynamic tire load and body acceleration. Moreover, the simulation results show that the (RMS) of suspension working space was reduced by 44.5%, body acceleration and dynamic tire load are reduced by 18.5% and 20% respectively.
Journal: Advances in Molecular Imaging
ISSN 2161-6728
Volume: 04;
Issue: 02;
Start page: 126;
Date: 2012;
Original page
Keywords: Mixed H2/H∞ | Semi Active Suspension | Pole-Placement | Ride Quality | Linear Matrix Inequality (LMI)
ABSTRACT
The aim of the present work is to illustrate the application of mixed H2/H∞ control theory with Pole-Placement in de- signing controller for semi-active suspension system. It is well known that the ride comfort is improved by reducing vehicle body acceleration generated by road disturbance. In order to study this phenomenon, Two Degrees of Freedom (DOF) in state space vehicle model was built in. However, the role of H is to minimize the disturbance effect on the output while H2 is used to improve the input of controller. Linear Matrix Inequality (LMI) technique is used to calculate the dynamic controller parameters. The simulation results show that the H2 and H techniques can effectively control the vibration of vehicle system where the reduction of suspension working space, dynamic tire load and body acceleration. Moreover, the simulation results show that the (RMS) of suspension working space was reduced by 44.5%, body acceleration and dynamic tire load are reduced by 18.5% and 20% respectively.
