Article,
Performance Investigation of H∞ Controller for Quarter Car Semi-active Suspension System using Simulink
Report and Opinion Journal, 12 (6): 14-18 (June 2020)
DOI: 10.7537/marsroj120620.03
Abstract
This paper affords the design and improvement of a semi-active suspension
system for an automobile.
The main idea is to increase the semi-active suspension system damping
vibration of the automobile body even as
crossing the bump and sine pavement on the road. This system is modelled
for 1 / 4 car system after which the entire
system has been simulated using Mat lab/Simulink. It is used to physically
simulate the quarter vehicle system of the
automobile and have a look at the time domain response to the road
disturbances. H infinity controllers is used to
govern the damping properties of the semi-active suspension system
mechanically. The system is designed in
contrast to the most of the available suspension systems using a third
order hydraulic actuator. The proposed system
is compared with H2 optimal controller to test the performance of
the system for the control targets suspension
deflection, body acceleration and body travel for the bump and sine
road disturbances. The simulation result of this
studies reveal the efficiency of the advanced H∞ controller for the
quarter car semi-active suspension system.
