抄録
Generally, the specifications of the actuator system robustness and the disturbance or noise are often provided in frequency domain. Traditional observer design method is based on a state space structure in time-domain approach of a linear system. In this paper, an observer designed using the transfer function in frequency domain is described. This method is composed of a diophantine equation and only three design steps are required to construct the observer. An estimation error was chosen for the evaluation of observer characteristics, and the simulation results show the effectiveness of the proposed method.