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Transient response comparison of feedback and feed-forward compensation methods in systems with zero steady state error

AuthorsMatía, Fernando
KeywordsControl systems
Feed-forward compensation
Feedback systems
PID controllers
Steady-state errors
Issue Date13-Jun-2019
PublisherJohn Wiley & Sons
CitationAsian Journal of Control: 1-10 (2019)
AbstractProportional–Integral–Derivative (PID) controllers with integral action are conventionally used as feedback controllers. They are used to obtain zero steady‐state error when the reference input or the disturbance are steps and where zero‐type systems (i.e. with no poles at the origin) are controlled. The controller meets its objective when the controlled system is non linear, but usually introduces undesirable changes in the dynamics that must be compensated by readjusting the proportional gain. In this paper, we compare PID with two alternative techniques based on the use of a feed‐forward system and a multiple feedback system, respectively. A detailed comparison of the transient response obtained with these methods is presented and validated with some simulation examples.
Publisher version (URL)https://doi.org/10.1002/asjc.2144
Appears in Collections:(CAR) Artículos
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