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The paper presents the basic methods for developing an expert system to assess the efficiency of power supply networks. The existing expert systems and possibility of their use to assess the efficiency of power supply systems have been analyzed. Mathematical models for network expertise, in particular, methods of the theory of choice and decision making were described. Decision-making algorithm for power grid based on differential evolution method is considered. The algorithm to calculate the reduced costs in designing power supply networks, allowing to develop the optimal expert system for control and assessment of power supply network efficiency, has been obtained.

This work is aimed at proecting an automated control system for an overhead crane based on a neural network, which will replace the operator, but it is possible to transfer this control back to the operator. The paper considers an approach to the development of the necessary software for the correct operation of the crane, the choice of equipment suitable for the task. The final part describes the program blocks necessary for operation, as well as locks.

The paper presents the design of a wireless communication system for short-range, high-speed, and multi-node information acquisition based on BLE5.0 technology, targeting indoor wearable applications. The system employs the Nordic nRF52832 microcontroller, which integrates BLE5.0 transceivers, as the core, and includes designs for master-slave node communication, data acquisition, hardware circuitry, embedded and upper computer programs. The system is validated through upper computer software for device networking, multi-node data acquisition, and communication speed. The power consumption and communication distance of the devices are tested using a measurement device. The designed multi-node BLE5.0 communication system in this paper provides a technical foundation for the design of relevant short-range IoT applications and has broad application prospects.

In this paper, a hybrid polymer fuel cell system with a lead-acid battery has been explored, so that the battery is designed to support the fuel cell system in providing the power needed for the load as well as storing additional energy. The battery is used to maintain the efficiency of the SOC battery. From a constant power strategy for a fuel cell and managing the fuel at the optimum operating point, to reducing the voltage load on the battery and reducing the instantaneous current load on the fuel cell in use. The general configuration of the hybrid system includes a polymer fuel cell followed by a boost converter, as well as a lead-acid battery pack, after which a bidirectional converter to control the power of the battery in charge and discharge mode. It's in the system. According to the simulation, it has been observed that the power contribution between the fuel cell and the battery is well suited to load changes, and the fuel cell always produces a constant power to charge the battery and power the load. It is protected from any kind of load fluctuation and interference.