Title :
Application of three-degree-freedom Internal Model Control and mechanism analysis of IMC system robustness
Author :
Yuanshen, Zhou ; Xirong, Zhu
Author_Institution :
Dept. of Electron. Eng., Huaihai Inst. of Technol., Lianyungang, China
Abstract :
In the conventional two-degree-freedom (2DOF) internal model control (IMC) method, input controller is applied to regulate the output tracking, forwardback controller to regulate both load disturbance rejection performance and robustness performance. In order to regulate respectively them, this paper presents the three-degree-freedom(3DOF) IMC method, the additional feedback controller is used to regulate the robustness of the system. First the principle of 3DOF-IMC is analyzed, and the relation between robustness and feedback controller is searched. Then the 3DOF-IMC method is applied to the speed adjusting drive system of DC machine. The performances of system, based on 3DOF-IMC, have been verified by computer simulation. Simulation results show that the output tracking, the load disturbance rejection and robustness performance of system are regulated respectively by using the 3DOF-IMC method, the proposed 3DOF-IMC methods provide very good dynamic response performances.
Keywords :
DC machines; electric drives; feedforward; machine control; robust control; stability; tracking; DC machine; IMC system robustness; computer simulation; feedback controller; forwardback controller; input controller; internal model control method; load disturbance rejection performance; mechanism analysis; output tracking; speed adjusting drive system; three-degree-freedom internal model control; Adaptive control; Computational modeling; Computer simulation; Control system analysis; DC machines; Electronic mail; Performance analysis; Robust control; Robust stability; Robustness; Robust performance; Robust stability; Three-degree-freedom Internal Model Control (3DOF-IMC);
Conference_Titel :
Control and Decision Conference, 2009. CCDC '09. Chinese
Conference_Location :
Guilin
Print_ISBN :
978-1-4244-2722-2
Electronic_ISBN :
978-1-4244-2723-9
DOI :
10.1109/CCDC.2009.5191769
