Research of fault-tolerant control system of the formation process of carbon products

Abstract

The production of carbon products is largely resource- and energy-intensive. That is why increasing the efficiency of this production is an urgent scientific and practical task, especially in modern conditions of constant growth of energy costs. An effective way to solve this problem is to create a modern process control system, taking into account the possible failures of system elements.
 The practice of operating hydraulic presses in carbon graphite production, the control valve of the hydraulic press sometimes fails or works with errors. That is why this paper considers the stage of loading the process of forming carbon products in terms of building a fault-tolerant pressing speed control system.
 The article investigates the fault-tolerant control system of carbon products, which is synthesized on the basis of traditional fault-tolerant systems for non-cyclic processes and control systems with iterative learning, which have demonstrated their effectiveness in control technological processes of cyclical nature. A method using linear matrix inequalities has been developed for optimal adjustment of control system parameters.
 Based on the combination of control with iterative learning and control that takes into account the failures of regulators, built a control system for the formation of carbon products, which takes into account both the cyclical nature of the technological process and possible failures of regulators. The research of the effectiveness of the control system by comparing its work with traditional fault-tolerant systems and control systems with iterative learning in the event of faults and disturbances of various kinds showed that the proposed system improves control quality not only over time during each cycle, but also from cycle to cycle.
 Further research should be aimed at the practical application of the proposed control system for different technological processes in different types of failures of regulatory bodies and the action of disturbances of different nature.