Aspects of achievable performance for quarter-car active suspensions
ABSTRACT In this paper, constraints on the transfer functions from the road disturbance to the vertical acceleration, the suspension travel, and the tire deflection are derived for a quarter-car active suspension system using the vertical acceleration and/or the suspension travel measurements for feedback. The derived constraints complement the similar constraints in the literature. By using the factorization approach to feedback stability, it is shown that tire damping couples the motions of the sprung and unsprung masses; and eliminates a constraint at the wheel-hop frequency. The influence of tire damping on the design of an active suspension system for a quarter-car model by a mixture of the LQG methodology and the interpolation approach is also illustrated.
Conference Proceeding: Influence of tire damping on multi-objective control of quarter-car suspensions[show abstract] [hide abstract]
ABSTRACT: In this paper, multi-objective control of a quarter-car suspension system subjected to random road disturbances is studied. The active suspension problem is formulated as a mixed H<sub>2</sub>/H<sub>∞</sub> synthesis problem and solved using linear matrix inequalities. It is first demonstrated that the influence of tire damping on the closed-loop performance can be significant. Then, this result is extended to suspension models with polytopic tire damping uncertainties.Industrial Technology (ICIT), 2010 IEEE International Conference on; 04/2010
Conference Proceeding: Vibration suppression of vehicle active suspension systems in finite frequency domian.Proceedings of the 48th IEEE Conference on Decision and Control, CDC 2009, combined withe the 28th Chinese Control Conference, December 16-18, 2009, Shanghai, China; 01/2009
Conference Proceeding: Influence of tire damping on the ride performance potential of quarter-car active suspensions[show abstract] [hide abstract]
ABSTRACT: In this paper, performance limitations are studied for a quarter-car active suspension system excited by sinusoidal or random road disturbances. It is demonstrated that the influence of tire damping on the closed-loop performance of the active suspension system can be significant.Decision and Control, 2008. CDC 2008. 47th IEEE Conference on; 01/2009