Rv. Dukkipati et Ss. Vallurupalli, Adaptive control of an active suspension for nonlinear time varying vehicle plant, T CAN SOC M, 24(3-4), 2000, pp. 525-546
Citations number
14
Categorie Soggetti
Mechanical Engineering
Journal title
TRANSACTIONS OF THE CANADIAN SOCIETY FOR MECHANICAL ENGINEERING
This paper presents a new adaptive control approach to general multi-degree
s-of-freedom suspension models. The control concept diverts from the widely
applied optimal control to adaptive control. The basic idea involves obtai
ning optimal performance of any nonlinear time varying suspension model by
adaptively following a predefined reference model. Optimal performance is a
chieved by an adaptive control law, which involves feed forward, feedback a
nd auxiliary controller parameters. Model reference adaptive control is use
d to derive adaptation laws for the controller. The proposed control scheme
is computationally fast and does not require a priori knowledge of complex
nonlinear dynamic variations and time varying parameters of the model. Sim
ulation results for a two-degree of freedom nonlinear suspension model subj
ected to random asphalt road input are presented. The time and frequency do
main results indicate good performance of adaptive controller even for larg
e dynamic variations of model.