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Increasing the Speed and Performance of the Drupal CMS Server for Industrial IoT Technologies
(2023) Satsyk, Viktor; Cagáňová, Dagmar; Reshetylo, Oleksandr; Zabolotnyi, Oleg; Tkachuk, Anatolii
In this paper, the methods of increasing the speed and performance of the Drupal CMS-based server in IIoT technologies were analyzed. Three main load parameters were taken into account: processor time (CPU), level of server RAM usage, and disk memory usage level; on three pages of the WEB site (main, list of blogs, and a page with one blog) and two research methods were applied: generalized and detailed. Based on the results of the analysis of four options for optimizing Drupal CMS for IIoT technologies: basic, using additional installed modules, servers, and configurations, and Drupal Hooks, effective, simple, cost-effective methods were synthesized that guarantee an increase in server speed and productivity. It was found that the optimization of configurations and Drupal Hooks is the most effective since after its implementation, the response of a page with one blog increased by 9.32 requests per second; built-in optimization is extremely simple to implement and inefficient, while server-side optimization is inefficient, most complex and expensive to implement.
Modeling dynamic and static operating modes of a low-power asynchronous electric drive
(2025-06-27) Lyshuk, Viktor; Moroz, Sergiy; Selepyna, Yosyp; Zablotskyi, Valentyn; Yevsiuk, Mykola; Satsyk, Viktor; Tkachuk, Anatolii
The article presents a mathematical model of the asynchronous motor in oblique coordinates, based on differential equations expressedin the standard Cauchy form. The differential equations of traditional models are implicitly formulated; therefore, during numerical implementationfor prolonged processes, matrix coefficient rotation leads to significant time expenditure and the accumulation of errors during integration. This complex task is proposed to be addressed by ensuring that the differential equations of the electromechanical state are non-stiff and, importantly, writtenin standard Cauchy form. The standard Cauchy form is essential for analyzing asynchronous motors, as changes in the number of unknowns significantlyrestructure the coefficient matrix. This formulation of the equations is convenient for numerical integration, as explicit methods, which are considerably simpler than implicit methods, can be implemented. To create a mathematical model, coordinate transformations were performed based on the classical theory of electric machines. The advantage of the proposed method of using different coordinate axes is the possibility of analyzing new variablesand obtaining constant coefficients in the equations of state of the electric motor.The model accounts for the electromagnetic interactions of the motor’s electrical circuits and their nonlinearity, enabling the simulation of electromagnetic and electromechanical processes. Transitional operating modes of the asynchronous motor have been modeled and analyzed. The proposed model can be utilized for analyzing the operation of motors both as standalone elements and as components of an electromechanical system. It is demonstrated that this model aligns with classical electrical machine theory.Simulation results are provided, along with their analysis.

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