Title :
Constraint on steady state output imposed by zeros at s=0 and servo synthesis using unstable weight with application to multi-area frequency control of power plants
Author :
Villas-boas, Sergio B. ; Liu, Kang-Zhi
Author_Institution :
Dept. of Electron. & Mech. Eng., Chiba Univ., Japan
Abstract :
When an MIMO plant has zeros at s=0, it can be shown that this imposes a constraint on the steady state output of the plant. Therefore, reference tracking/disturbance rejection is possible only if certain structural condition is satisfied. In the optimal servo synthesis using unstable weight, such as the one using unstably weighted H∞ control, the structure of unstable weight can not be selected freely in this case. The required structure is exposed in this paper. Further, the proposed method is applied to the multi-area frequency control of power plants which has a zero at s=0
Keywords :
H∞ control; MIMO systems; control system synthesis; frequency control; poles and zeros; power plants; servomechanisms; tracking; H∞ control; MIMO systems; disturbance rejection; frequency control; power plants; servo synthesis; tracking; unstable weight; zeros; Frequency control; MIMO; Mechanical engineering; Optimal control; Power generation; Power industry; Power system modeling; Servomechanisms; Steady-state; Weight control;
Conference_Titel :
Control Applications, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Trieste
Print_ISBN :
0-7803-4104-X
DOI :
10.1109/CCA.1998.721686
