Design Considerations for Generalized Predictive Controllers and Systems with Fractional Dead Time

摘要: Non-integral dead time in computer-controlled systems causes a zero to be created on the real axis \( {\mathbf{z}} \)-plane, position of which can outside unit circle or near ringing pole \left( {{\text{z }} = \, - 1} \right). \) Generalized predictive control (GPC), under certain circumstances, uses an inverse plant model place closed-loop poles open loop zeros. Non-minimum phase and some with fractional have zeros that are pole. GPC, would positions result undesirable instability system. An analysis into effect GPC variables, gain is presented.