On the design of the feedforward compensator in two-degree-of-freedom controllers |
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| Affiliation: | 1. Aachener Verfahrenstechnik - Process Systems Engineering, RWTH Aachen University, Turmstr. 46, 52064 Aachen, Germany;2. Massachusetts Institute of Technology, Department of Mechanical Engineering, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States of America;3. Imperial College London, Centre for Process Systems Engineering, Department of Chemical Engineering, London SW7 2AZ, United Kingdom (Great Britain) |
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| Abstract: | This paper presents an innovative methodology to design the feedforward path of two-degree-of-freedom (2-d.o.f.) regulators for ‘optimal’ set point tracking. The proposed methodology is totally independent of the structure of the feedback controller, of the way it is designed, and of the characteristics of the set point signal. By using a nonparametric model of the control loop, that can be easily identified on-line, various tracking problems can be cast into a unified, and easily interpreted optimisation framework. Simulated and physical examples demonstrate the simplicity and efficacy of the proposal. |
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