2006
DOI: 10.3182/20060710-3-it-4901.00042
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Pid Controller Synthesis for a Class of Unstable Mimo Plants With I/O Delays

Abstract: Conditions are presented for closed-loop stabilizability of linear time-invariant (LTI) multi-input, multi-output (MIMO) plants with I/O delays (time delays in the input and/or output channels) using PID (Proportional + Integral + Derivative) controllers. We show that systems with at most two unstable poles can be stabilized by PID controllers provided a small gain condition is satisfied. For systems with only one unstable pole, this condition is equivalent to having sufficiently small delay-unstable pole prod… Show more

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Cited by 13 publications
(13 citation statements)
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“…rather than (15), and then applying the small gain theorem, as was done in [28], does not work in the case of fractional systems. So, we have to compute R α (γ ) as a function of γ for the specific α value appearing in the plant transfer function.…”
Section: Adding Integral Action To the Pd Controllermentioning
confidence: 99%
See 1 more Smart Citation
“…rather than (15), and then applying the small gain theorem, as was done in [28], does not work in the case of fractional systems. So, we have to compute R α (γ ) as a function of γ for the specific α value appearing in the plant transfer function.…”
Section: Adding Integral Action To the Pd Controllermentioning
confidence: 99%
“…As in [28], the design will be done in two steps: first, PD controllers will be investigated, and then the integral action will be added.…”
Section: Pid Controller Designmentioning
confidence: 99%
“…In this section we discuss the design of C1 for the largest allowable range of ρ, (9), for a class of single input single output (SISO) plants with time delays. In this case, from (9) we see that C1 should be designed to minimize…”
Section: Design Of C 1 Maximizing the Integral Action Gainmentioning
confidence: 99%
“…EEEAG-105E156). Cpi, is a stabilizing controller for the new plant P (I + C1P ) −1 , then the parallel connection of the controller, Cpi + C1, is a stabilizing controller for the original plant P , see [9,14,16]. One can study the problem choosing the best C1 so that the allowable range of ki is maximum.…”
Section: Introductionmentioning
confidence: 99%
“…[13] and its references. An alternative approach for SS0PD would be to use the results of [7,11], where a simple but conservative design method is proposed for proportional plus derivative (PD) controller synthesis for systems with time delays.…”
Section: Ss0mentioning
confidence: 99%