S. Pan et J. Pal, DISCRETIZATION OF EXISTING CONTINUOUS CONTROL-SYSTEMS, Journal of dynamic systems, measurement, and control, 119(2), 1997, pp. 315-318
A new method is presented for discretizing an existing analog controll
er. The method is based on frequency response matching of the closed-l
oop digital system with that of the original analog system. The method
requires solution of linear algebraic equations and is computationall
y simple. Efficacy of the method is illustrated through examples taken
front the literature.