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Robust PID control for an industrial distillation column

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2 Author(s)
H. E. Musch ; Meas. & Control Lab., Swiss Federal Inst. of Technol., Zurich, Switzerland ; M. Steiner

State-space controllers are difficult to implement in a distributed control system. Therefore a control design based on the common PID control structures is desirable. This article presents the μ-optimal tuning of advanced PID control structures as well as a simple feedforward control design for an industrial binary high purity distillation column. The design is based on an optimization approach. The resulting controllers ensure stability and a high performance for the entire operating range of the distillation column. A summary of the practical experiences complements the theoretical results.

Published in:

IEEE Control Systems  (Volume:15 ,  Issue: 4 )