Conditional feedback systems -A new approach to feedback control

Performance limitation of tracking control problem for a class of references

“…Note that the summation in K (0) (s) is carried out for i =1 ,...,m p , since r(z i )=0holds for i = m p +1,...,m a . On the other hand, the recursion (10) and (11) corresponds to the constraint on the relative degree. Notice that α k in (12) is bounded by the constructions of K (k) (s).…”

“…47th IEEE CDC, Cancun, Mexico, Dec. [9][10][11]2008 WeC16.5 The limitation on the tracking performance has been analyzed for the 1DOF and the 2DOF control systems. We have first characterize the sets of the admissible output signals and parameterize those based on the set of the stable proper real rational functions.…”

GIMC architecture for linear systems with a single I/O delay

“…A variety of control system designs including multi-objective problems resolve themselves to specify this Q-parameter [3][4][5][6][7][8][9][10][11][12][13]. On the other hand, for LTI systems, two-degree-of-freedom control framework is considered in a variety of control schemes [14][15][16][17][18][19][20][21]; in particular, the parallel model and plant paradigm referred to ''internal model control'' (IMC) is a natural and tractable approach to the design and analysis of control systems [16]. Furthermore, the internal structure of the IMC controller is described directly with Youla parameterization and called generalized internal model control (GIMC) [13].…”

Two‐degree‐of‐freedom controller design for linear parameter‐varying systems

“…Two‐degree‐of‐freedom (TDOF) control schemes are fundamental to the design of linear time invariant (LTI) systems that deal with both command tracking and disturbance rejection independently 1, 2. Control performance, and also controller structures, can be independently dealt with in a TDOF framework 3–7.…”