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. Keywords — Quarter Car Semi-active Suspension System, H∞ Controller, H2 optimal Controller DOI: 10.7176/JIEA/10-2-02 Publication date: March 31 st 2020
Highlights
Suspension systems are labeled in to three types: Passive, Semi Active and Active suspension systems
Based at the alerts received via the sensors and prescribed manipulate strategy the pressure inside the actuator is modulated to obtain progressed experience and coping with
It need to be cited, that an active suspension system calls for outside power to function, and that there may be a large penalty in complexity, reliability, cost and weight
Summary
Suspension systems are labeled in to three types: Passive, Semi Active and Active suspension systems. Passive suspension system includes an electricity dissipating detail, that's the damper, and an energy-storing detail, which is the spring. Based at the alerts received via the sensors and prescribed manipulate strategy the pressure inside the actuator is modulated to obtain progressed experience and coping with. It need to be cited, that an active suspension system calls for outside power to function, and that there may be a large penalty in complexity, reliability, cost and weight. Semi-active suspension is a type of automotive suspension systems that controls the damping pressure of the shock absorber in reaction to input from the constantly varying road surfaces. These equations are solved numerically using MATLAB’s dynamic system simulation software, SIMULINK
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