Frolov

It is shown that an effective method of presenting undefined parameters of mathematical models are interval numbers. The authors propose algorithms for solving interval mathematical models of statics and dynamics which have lumped and distributed parameters. The algorithms are based on solving optimization problems. Implementation of the presented algorithms is demonstrated by material firing in a rotary kiln in which information on some of the parameters is set in the form of interval numbers. The method can effectively solve the problem of design and process control under uncertainty.