Digital Controller Design for Analog MIMO Systems with Multiple I/O Delays
This paper proposes a discretization scheme and an optimal digital cascaded plus state-feedback controller for Multiple-Input-Multiple-Output (MIMO) continuous-time systems with multiple time delays in both inputs and outputs. Firstly, an equivalent discrete-time model is obtained from the MIMO analog time-delayed system. The equivalent discrete-time model and a partially predetermined digital cascaded controller are formulated as an augmented discrete-time state-space system for state-feed forward and state-feedback Linear Quadratic Regulator (LQR) design. As a result, the parameters of the cascaded controller and its associated state-feedback controller can be determined by tuning the weighting matrices in the LQR optimal design. Then a discrete-time optimal observer for the MIMO analog time-delayed system is constructed for the implementation of the designed state-feedback digital controller. The proposed methodology has been verified through both simulation and experiment on the induction motor drive system.
MIMO Time delays Digital control State-space model LQR
Warsame H. Ali Yongpeng Zhang Penrose Cofie Jian Zhang Dhadesugoor Vaman
Department of Electrical and Computer Engineering, Prairie View A&M University, Prairie View, TX 774 Department of Engineering Technology, Prairie View A&M University, Prairie View, TX 77446, USA
国际会议
The 24th Chinese Control and Decision Conference (第24届中国控制与决策学术年会 2012 CCDC)
太原
英文
39-44
2012-05-23（万方平台首次上网日期，不代表论文的发表时间）