A modified coupling Independent Component Analysis algorithm applied to a semi-active suspension system

摘要

In this paper, the Independent Component Analysis (ICA) was proposed to be integrated with a semi-active control in order to improve the vehicle performance in real time. In fact the ICA was used to estimate the road profile variability. Taking into account the estimated road information, a skyhook controller was allowed to switch its control gain. It acts accurately in real time to eliminate the vibrations and ensure passengers comfort. This control was used due to its simplicity and efficiency. It depends only on the speed of the sprung mass which is affected by the type of road profile. The studied profile consists of a series of random roads selected according to the ISO 8608 standard. Only two measurements are required in the proposed coupling method: the sprung mass variation and the vehicle speed variation. The numerical results in time and frequency domain show that the modified ICA method ensures the passengers comfort and enhances the required performances.