State observer design for an adaptive vehicle suspension

This paper presents a state observer design for an adaptive vehicle suspens ion. Based on simulations, two main issues are investigated, (a) the select ion of measurement signals in relation to estimation accuracy and sensing n eeds and (b) the effects of variations in both road inputs and vehicle para meters on estimation accuracy. Meanwhile, the system stabilities are also e xamined concerning the effects of using different combination of measuremen t states and the system parameter variations in practical, possible ranges.