title: Two degree of freedom PID based inferential control of continuous bioreactor for ethanol production.
abstract: This article presents the development of inferential control scheme based on Adaptive linear neural network (ADALINE) soft sensor for the control of fermentation process. The ethanol concentration of bioreactor is estimated from temperature profile of the process using soft sensor. The prediction accuracy of ADALINE is enhanced by retraining it with immediate past measurements. The ADALINE and retrained ADALINE are used along with PID and 2-DOF-PID leading to APID, A2PID, RAPID and RA2PID inferential controllers. Further the parameters of 2-DOF-PID are optimized using Non-dominated sorted genetic algorithm-II and used with retrained ADALINE soft sensor which leads to RAN2PID inferential controller. Simulation results demonstrate that performance of proposed RAN2PID controller is better in comparison to other designed controllers in terms of qualitative and quantitative performance indices.
authors.affiliation: Instrumentation and Control Engineering Division, Netaji Subhas Institute of Technology, University of Delhi, Sec-3 Dwarka, New Delhi 110078, India. Electronic address: nikhilpchr@gmail.com.
authors.forename: Nikhil
authors.initials: N
authors.lastname: Pachauri
authors.affiliation: Instrumentation and Control Engineering Division, Netaji Subhas Institute of Technology, University of Delhi, Sec-3 Dwarka, New Delhi 110078, India. Electronic address: vijaydee@gmail.com.
authors.forename: Vijander
authors.initials: V
authors.lastname: Singh
authors.affiliation: Instrumentation and Control Engineering Division, Netaji Subhas Institute of Technology, University of Delhi, Sec-3 Dwarka, New Delhi 110078, India. Electronic address: ashansit@gmail.com.
authors.forename: Asha
authors.initials: A
authors.lastname: Rani
keywords: 2-DOF-PID; ADALINE; BRBNN; Bioreactor; LMPNN; PID