Electronic Design, Test and Applications, IEEE International Workshop on (2002)
Christchurch, New Zealand
Jan. 29, 2002 to Jan. 31, 2002
Leonardo L. Giovanini , Universidad Tecnol?gica Nacional, Regional School at Villa Mar?
In this work a new method to design predictive controllers for linear MIMO systems has been presented in this work. It uses only one prediction of the system output J time intervals ahead to compute the correspondent future error. Then, the predictive feedback controller is defined by introducing a filter that weights the last predicted errors. In this way, the resulting control action is computed by observing the system future behavior and the present and past errors. These features enable to the predictive feedback controller to combine the capacity of predictive control algorithm for good setpoint tracking and time delay compensation, with the classical use of the feedback information to improve the disturbance rejection. The character of these controllers is governed by one parameter: the prediction time, which directly influences the speed of closed-loop response. The predictive feedback controller has additional tuning parameters: the parameters of the filter. By varying them we can enhance the closed-loop performance and shape the closed-loop time-domain response.
predictive control, feedback control, decoupling control, time delay compensation
L. L. Giovanini, "Multivariable Predictive Feedback Control," Electronic Design, Test and Applications, IEEE International Workshop on(DELTA), Christchurch, New Zealand, 2002, pp. 453.