  This paper presents an adaptive control strategy with LQ control of a
quarter-car, which is ameliorated to smoothly follow the dynamically changing
reference arm angle, in order to omit the heave sensor in this study.
Linearized plant parameters are initially derived from model equation and then
estimated by online estimator. LQ control method provides optimal control
effort with corresponding estimated plant parameters. The results of the
simulation are depicted in time domain. Weighted RMS values of the consequences
are suggested to assess the efficiency of the controller. Different road
conditions are considered in order to reveal the performance of the controller
in detail.

Systems and Control