REALIZATION PROBLEM FOR A CLASS OF POSITIVE CONTINUOUS-TIME SYSTEMS WITH DELAYS

In positive systems, inputs, state variables and outputs take only non-negative values. Examples of positive systems are industrial processes involving chemical reactors, heat exchangers and distillation columns, storage systems, compartmental systems, or water and atmospheric pollution models. A variety of models revealing the behaviour of positive linear systems can be found in engineering, management science, economics, social sciences, biology and medicine, etc.