  Use of Control theory within process control industries has changed rapidly
due to the increase complexity of instrumentation, real time requirements,
minimization of operating costs and highly nonlinear characteristics of
chemical process. Previously developed process control technologies which are
mostly based on a single controller are not efficient in terms of signal
transmission delays, processing power for computational needs and signal to
noise ratio. Hybrid controller with efficient system modelling is essential to
cope with the current challenges of process control in terms of control
performance. This paper presents an optimized mathematical modelling and
advance hybrid controller (Fuzzy Logic and PID) design along with practical
implementation and validation of pH neutralization pilot plant. This procedure
is particularly important for control design and automation of Physico-chemical
systems for process control industry.
