Design and Implementation of a Interval Type-2 Adaptive Fuzzy Controller for a Novel Pneumatic Active Suspension System

In order to reduce vibration and to increase performance for vehicles, a pneumatic muscle (PM) is integrated with an active vehicle suspension system (AVSS) in this paper. The behavior of nonlinearity and time-varying causes the PM-based AVSS (PM-AVSS) is difficult to be controlled. In this paper, therefore, the design and implementation of an interval type-2 adaptive fuzzy controller (IT2AFC) are proposed for PM-VSS for dealing with the system time-varying and nonlinear uncertain behaviors. The proposed controller has on-line tuning ability for adjusting the control rule parameters. The proposed the IT2AFC is implemented in a self-made quarter-car AVSS, and the experimental results show that the built active vehicle system has good performance in vibration reduction.