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Design of Multiloop Controllers for an Ammonia Reactor

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3 Author(s)
Patnaik, L.M. ; School of Automation, Indian Institute of Science, Bangalore 560012, India. ; Viswanadham, N. ; Sarma, Isukapalli G.

The specific objective of this paper is to develop multiloop controllers that would achieve asymptotic regulation in the presence of parameter variations and disturbance inputs for a tubular reactor used in ammonia synthesis. The dynamic model considered here has nine state variables, two control inputs, and two outputs. A systematic procedure for pairing the two inputs with the corresponding two outputs is presented. The two multiloop proportional controllers so configured are designed via the parameter plane method. This economic configuration of controllers maintains the temperature profile almost at the optimal value whereas the point controllers fail to do so.

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Industrial Electronics and Control Instrumentation, IEEE Transactions on  (Volume:IECI-28 ,  Issue: 4 )