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.
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机译：本文为汽车的半主动悬架系统提供了设计和改进。主要思想是增加汽车身体的半主动悬架系统阻尼振动，即使在道路上穿过凹凸和正弦路面。该系统是为1/4车系统的建模，之后使用MAT Lab / Simulink模拟整个系统。它用于物理模拟汽车的四分之一车辆系统，看看对道路干扰的时域响应。 H Infinity控制器用于机械地控制半主动悬架系统的阻尼性能。该系统与使用三阶液压执行器的大多数可用悬架系统进行了相反的设计。将所提出的系统与H2最优控制器进行比较，以测试系统的性能，用于控制目标悬架偏转，身体加速度和凸块和正弦道路扰动的身体加速度和车身行程。本研究的仿真结果揭示了四分之一汽车半主动悬架系统的先进H∞控制器的效率。
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