Most of the existing active suspension studies assume that an ideal force actuator exists and will carry out the commanded force accurately. In reality, due to the interaction between the hydraulic actuator and suspension system, the lightly damped modes of the plant will generate lightly damped zeros (LDZ) for the servo-loop system, which confines the closed-loop performance to a low frequency...

Automotive suspension system is important part of car comfort and safety. In this article automotive active suspension with linear motor as actuator is designed using H-infinity control. This paper is focused on comparison of different controller designed for quart, half or full-car model (and always used for “full” car). Special attention is placed on energy demand of the whole system. Each co...

Smart materials have a growing technological importance due to their unique thermomechanical characteristics. Shape memory alloys belong this class of being easy manufacture, relatively lightweight, and able produce high forces or displacements with low power consumption. These aspects could be exploited in different applications including vibration control. A dynamic absorber (DVA) can used as...

This paper presents a control of active suspension for quarter car model with two degree of freedom by using H∞ method. Absolute velocity of car body is measured for feedback. The system parameter variations are treated with multiplicative uncertainty model. Simulation results show that the H∞controller provides good trade-off between ride quality, suspension packaging and road holding constrai...