Аннотация:Article is devoted to solving the problem of controlling weakly deterministic chemical-technological systems using the example of a polymer synthesis reactor. There is developed a block diagram of an adaptive regulator with a fuzzy-logic supervisor, which changes the regulator settings during the process according to a certain rule base. The membership functions and rulebase of the supervisor is given. The results of the operation of such a control system are shown in comparison with the classical one. As a result of a comparative analysis, a significant increase in the quality of the transition process in the proposed system is shown.