オブザーバの新しい設計法

周波数領域による方法

抄録

Traditional observer design by Gopinath method is not easy to apply to the practical system because of sèveral design steps, and is difficult to understand its design structure. To overcome this disadvantage, a new design method is proposed based on the frequency domain, i.e., by using transfer function. This method is composed of a diophantine equation and only three steps are required in the design procedure. By choosing the order and coefficients of the equation adequately, various observers such as an n-th order observer, a reduced-order observer, a robust observer etc. can be designed in the same manner. The advantage of the new method is emphasized on its simplicity in construction and understandable structure.