METHOD FOR CONTROL OF RECIRCULATION HEATING OF AERODYNAMIC LOSSES FURNACE Russian patent published in 2020 - IPC F26B9/06 

FIELD: heating.

SUBSTANCE: invention relates to methods of recirculation heating in furnaces of aerodynamic losses. Disclosed is method of controlling recirculation heating of aerodynamic losses furnace. Method includes stages, at which direct and feedback matrices are synthesized. Discrete model is converted to vertical accompanying canonical form and then to canonical form of controllability. Equation of closed state is recorded. Poles of the system are calculated for the continuous model and the desired poles are set and their discrete representation is then calculated. Matrix of the desired dynamics of the discrete model is set in a diagonal form and is converted using a D. K. Faddeev algorithm to Frobenius shape. In compliance with the Hamilton-Cayley theorem, the characteristic polynomial of the initial discrete model is formed into a canonical shape of controllability, and the feedback matrix for the canonical controllability form is calculated using the Ackerman formula. Back coupling matrix is calculated by inverse transformation for initial discrete model. Total transfer coefficient of the system for discrete and continuous models is calculated. Direct communication coefficient is calculated. Numerical values of the direct communication matrix and feedbacks are recorded in the controller memory. Further, the aerodynamic losses furnace is heated by means of the rotary heater and the quality of the heating process is controlled by means of deviation of the throttle shutter, which is programmed by the controller.

EFFECT: advantage of the invention is achievement of predicted results with high accuracy, acceleration of process of equipment putting into operation and increase of its service life.

1 cl, 5 dwg