artificial intelligence
M. Hadjiski. Intelligent Control with Reinforcement Learning in Industrial Automation

Key Words: Adaptation; integration; Machine Learning; modeling; optimization; Reinforcement Learning; tuning.

Abstract. The article examines the main directions for integrating the Reinforcement Machine Learning (RL) as an extension of the already existing advanced industrial automation systems based on the classical PID and MPC regulators. The appropriate areas of application, functionality, advantages and disadvantages of the application of RL in direct process control, hybrid regulation, as well as in local coordination of complex multidimensional, nonlinear, with parametric variability and large number of constraints objects with frequent changes of the control objectives are analyzed. The goal of integrating RL is to achieve optimality, adaptability and security in all possible operational situations from technological and business aspects that are unattainable for traditional systems with PID and MPC regulators. An analysis was made and the prospects for the gradual transformation of RL into the third main pillar of industrial automation along with PID and MPC were assessed.

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artificial intelligence
S. Yordanov, G. Mihalev, K. Ormandzhiev, H. Stoycheva, S. Ivanov. Application of an Adaptive Neuro-PID Controller for Control of an Electro-Hydraulic System

Key Words: Neural PID control; adaptive control; electro-hydraulic system; nonlinear systems; MATLAB/Simulink; robustness.

Abstract. This article presents an adaptive Neural PID Optimizer for control of a nonlinear electro-hydraulic servo system. Conventional PID controllers with fixed parameters ensure satisfactory performance only in a limited operating range and exhibit degraded behavior at low rotational speeds due to dead-zone effects and at high speeds due to actuator saturation. To address these limitations, a neural network is employed to adapt the PID gains Kp, Ki, and Kd in real time based on the system state. Simulation studies conducted in MATLAB/Simulink for different operating regimes and load variations demonstrate that the proposed adaptive controller improves dynamic performance, reduces settling time, eliminates steady-state error, and enhances robustness to disturbances. The time evolution of the controller parameters confirms the effective operation of the neural adaptation mechanism. The results validate the suitability of the proposed approach for control of nonlinear electrohydraulic systems with variable operating conditions.

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automatica
V. Akivanov. Methods and Means for Remote Measurement and Storage of Data from Primary Sources

Key Words: Signal sources; PLC; Arduino; Raspberry Pi; Data Base; data server; programming software.

Abstract. In this article are considered several variants of systems for capturing data from measuring devices, their processing and their transmission for further storage in a database. Databases are considered, also the formation of records in them. In the modern digital world, automation acquires new dimensions and new qualities of receiving, processing and storing results. This article considers: measuring devices – sources of digital signals; devices/controllers for signal processing; methods and means for storing measured information; software tools for processing and storing data. As an example, elements of a program for receiving, processing and storing data received via the Modbus protocol are shown.

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