DIRECT POLE-PLACEMENT WITHOUT USING OBSERVERS

A new and direct approach to solve the pole placement problem for a gi ven linear plant is reported in this paper. The conventional procedure s involve complete identification of the plant and construction of eit her an Asymptotic or Kalman Filter type observer which use the estimat ed plant parameters. The estimated state variables are then fed back t o place the poles at the desired locations. In the new method suggeste d in this paper, a simple model is constructed based on specified pole locations. A minimum number of coefficients related to the zeros of t he plant and state feedback are determined together by a composite ide ntification algorithm. When the plant input/output are corrupted by no ise, it is possible to obtain accurate estimates of the parameters by using a periodic probing signal. The new procedure discussed involves minimum amount of computation for solving the direct pole placement pr oblem. The core of the model itself takes the role of an observer.