Abstract—The reported method of Equivalent transfer function(ETF) method for PI/PID decoupled controller design of multi-input multi-output square systems (Xiong, et al., 2007) is extended to non-square systems. This method is applied by simulation to Example considered by Ogunnaike and Ray (1994) given by 2×3 system. Simulation studies have been carried out for servo problem and regulatory problems. Robust performance (10% increase in each process gain, 10% increase in each time delay, and 10% decrease in each time constant) of servo problem and regulatory problem are also checked. The improvement of performance of non-square controller compared with that square controller is evaluated. The performance is evaluated in terms of ISE.

Index Terms—ETF, decoupled controller, servo, non square, ISE

Cite: T. Chiranjeeevi, I. V. V. Vijetha, B. N. CH. V. Chakravarthi, and M. Karthika, "Tuning and Control of Multi Variable Systems," International Journal of Electronics and Electrical Engineering, Vol. 2, No. 4, pp. 309-320, December 2014. doi: 10.12720/ijeee.2.4.309-320