Intelligent controller is the basic paper for the Artificial intelligence (AI). AI is an interdisciplinary science with multiple approaches capable of performing tasks like human intelligence.  In our instrumentation engineering it is very helpful to understand the concept behind the automation. Automation and instrumentation are fundamental aspects of the modern industry. Automation is the technique through which any system is made automatic. In this intelligent controller paper we can able to comprehend the architecture of intelligent control system, neural network and fuzzy logic which is helpful to make the automatic system.