Three control approaches for vehicle active suspension

The active control suspension system can improve both the riding comfort and handling safety in various operation conditions. In this paper, according to the evaluation method of riding comfort and handling safety of vehicle, the acceleration of the sprung mass, dynamic tyre load between wheels and road and dynamic deflection between the sprung mass and the unsprung mass are determined as the evaluation targets of suspension performance. For two-DOF vehicle suspension model, the generalized adaptive control, sky-hook control and least means squares (LMS) adaptive control are studied. The simulation results show that calculation of LMS adaptive control algorithm is much little, and the method is fit for the active control of the suspension system.