simulation modeling

The article presents the results of a comprehensiv study of electric drives based on switched reluctance motors (SRM), which, due to the absence of permanent magnets and windings on the rotor, demonstrate high mechanical strength, thermal resistance, and economic efficiency. Despite these advantages, the implementation of SRMs in industry is hindered by problems of torque ripple and control complexity.

The low-temperature separation (LTS) process is widely used for moisture and condensate removal in natural gas treatment and is typically controlled using local automation systems. However, the process is inherently multivariable, with strong cross-couplings between inputs and outputs, and is significantly affected by external disturbances. This study defines the control inputs as actuator signals on the gas and condensate outlet lines, while the outputs are the gas pressure and condensate level in the separator.

The issue of changing the speed mode for vehicles in dedicated lanes for public transport is discussed in the paper. Several arterial streets in Lviv were selected to analyze this concept. The study assesses the impact of various factors, such as traffic volume and composition, on road traffic efficiency. It has been found that in areas with dedicated lanes for public transport, there is a reduction in delays and an increase in traffic capacity.

In contemporary mechanical engineering, manufacturing various parts of dies, molds, etc., is particularly challenging. This is due to some factors, including the high precision of the components, the low roughness of their functional surfaces, significant temperature fluctuations during operation, the complex nature of the materials used in these parts, and the high frequency and intensity of the cyclic and alternating thermal and power loads.

Statement of the problem and purpose of the work. The technology of machining hard-to-machine materials, which undoubtedly include high-alloy steels and chromium and nickel-based alloys, has some advantages over traditional abrasive machining methods. Among the most significant advantages, researchers note greater flexibility, faster changeover to other types of parts, the ability to combine several operations into one due to the versatility of the forming motion of the blade tool compared to the abrasive, higher productivity, and relatively low technological cost.

This study delves into the comprehensive examination of an overhead crane's construction, focusing on its frame, columns, and beams, while considering factors such as strength, stability, and stiffness. Through an in-depth review in the design domain, it is proposed a specific structural configuration for the overhead crane. This design comprises six vertical columns supporting two longitudinal beams equipped with tracks for the trolley's longitudinal movement. Additionally, cross beams featuring winches are mounted on the trolley's cross beams.

Research results, using which the method of minimization of public transport delay is improved at intersections with the system of coordinated motion control, are given in this paper. Such transport research was carried out with simultaneous application of field measurements of the study of traffic flow indicators and computer simulation in PTV VISSIM to check the level of efficiency of coordinated control and the reliability of the results.

The article considers the features of the work in the office of the Lviv Regional Council and the need to use methods of simulation modeling for making decisions to improve the efficiency of the departments activity office and its employees.