UDC 681.513
AUTOMATIC CONTROL SYSTEM OF AMMONIA SYNTHESIS PROCESS
A. A. Voevoda, Dr. Sc. (Tech.), full professor, Novosibirsk, Russia; This email address is being protected from spambots. You need JavaScript enabled to view it.
K. M. Bobobekov, post-graduate student, NSTU, Novosibirsk, Russia; This email address is being protected from spambots. You need JavaScript enabled to view it.
The problem of temperature stabilization in the ammonia synthesis column is considered. The mathematical description of the object is given in the form of a matrix transfer function obtained in the identification process from the results of the experiment, which is then converted into a left matrix polynomial decomposition. The procedure of transition from left decomposition to right mutually simple polynomial decomposition is given. The regulator of a second order is selected with the property of astatism. Regulator parameters are calculated using the polynomial method. To determine the parameters of the regulator it is necessary to move from a polynomial equation to the so-called Diophantine equation with numerical matrices, which is solved using known methods. Block diagram of automatic control system and transient processes in the system when applying test signals are given. The aim of the work is to develop an astatic ACS temperature regime in the reaction zone of ammonia synthesis column at a given time of transient process, overshoot and provision of channel autonomy based on matrix polynomial method using the approximation of mathematical model of matrix process of transfer function of a low order in order to simplify the regulator compared to known results.
Key words: interconnected control object, left / right mutually simple polynomial decomposition, transition from left to right decomposition, synthesis of multichannel regulators, polynomial synthesis, temperature stabilization, ammonia synthesis column, astatism.