IDENTIFICATION OF MULTI-ZONE THERMAL FACILITIES

Abstract

An important component of solving the problem of coordination of control of multi-zone thermal facilities is obtaining primary information, which is necessary for finding optimal control. Determination of object parameters is carried out by solving the identification problem. The inertia of the object and, accordingly, the possibility of changing the state of its elements during the coordination cycle determines the need to forecast processes in multi-zone thermal objects. Proposed methods of active and passive identification of control object parameters. Active identification is used mainly at the initial stage of functioning of distributed cyber-physical systems (DCPS) or in the event of a change in its structure. Passive identification is used in the process of its operation to increase the accuracy of the assessment of characteristics and take into account their trends. Identification is carried out on the basis of the DCPS model in the form of a transfer function of a closed control system, taking into account the mutual influence of the object's elements. The problem of identification can be solved by both active and passive methods. However, the best result is given by a technique based on their combination. In the case of combined active-passive identification, at the beginning of the operation of the DCPS or when its structure is changed, a test effect (active stage) is carried out - the introduction of an initial fixed amount of the resource in sequence to each controlled element of the distributed object and the registration of the reaction of the change in the state of the elements over time. Based on this information, the object parameters are evaluated. Further, in the process of work, the control influences on the elements of the object and changes in their state are also registered (passive stage), on the basis of which the parameters of the object are specified and their possible trend is taken into account.