NON-LINEAR MODEL REFERENCE CONTROL OF pH PROCESS: AN EXPERIMENTAL STUDY

摘要

The control of pH is important in many processes including wastewater treatment, chemical processes and biological processes. This paper considers a model reference non-linear controller developed by Jayadeva et al. (1990a). The method is tested using a 7-litre continuously stirred tank reactor to neutralise a strong acid using a strong alkaline solution. The method is first realised using a simulation of the process. Subsequently it is demonstrated on an experimental rig using real-time control. Experimental results confirm that a robust control of the process is achievable.