Volume 5.
Issue 09.

This research paper delves into the realm of control strategies aimed at enhancing the performance of flexible robot manipulator systems. The study focuses on the exploration and unveiling of novel feed-forward control schemes tailored to mitigate the challenges posed by system flexibility. With an emphasis on precision, stability, and efficiency, the proposed strategies harness the potential of advanced control techniques to elevate the capabilities of these complex systems. Through theoretical analysis and simulation, the effectiveness of the feed-forward schemes is demonstrated, showcasing their potential to revolutionize the operation of flexible robot manipulators across various industries

The present work provides a structured examination of approaches for improving the energy efficiency of municipal and industrial wastewater treatment plants (WWTPs) under conditions of deep reconstruction. Against the backdrop of pronounced volatility in energy markets in 2022–2023—when EU electricity prices reached record levels in the first half of 2023—the reduction of operating expenditures became a priority engineering and economic objective. Within the study framework, a benchmarking methodology based on specific indicators (kWh/m³, ) is considered; a comparative analysis of technological solutions for CAS and MBR configurations is carried out; and the attainability of partial energy self-sufficiency through biogas cogeneration is assessed. Scientific novelty is associated with the development of an integrated model for selecting a modernization strategy that accounts for equipment performance, operational constraints, and the digitalization potential embedded in the “water sector digital transformation / Water 4.0” logic. The results indicate that advanced control (including AI/ML-based decision support where data quality allows) and modern membrane technologies can enable a 20–30% reduction in energy consumption while maintaining compliance with stringent environmental requirements. The material is oriented toward chief engineers of design organizations, specialists of utility operating services, and developers of environmental protection equipment.

One of the saponite sand deposits in the territory of Uzbekistan is Uchtut, located in the Central Kyzylkum plains of the Navoi region of the Republic of Uzbekistan. It was determined that the main layer of saponite is 1.7-1.9 m apart in some places, 10-15.0 cm thick (40-60% saponite), and in some places it is in the form of two layers. 15.0-20.0 cm (20-40% saponite). The mineralogical composition of saponite obtained from the Uchtut deposit was studied by chemical, X-ray phase, IR spectroscopic, differential thermal analysis, as well as gamma-spectrometric methods. The main mineral in the deposit is saponite, which is a multi-purpose mineral raw material and has been found to contain high levels of magnesium and calcium. The saponite mineral was roasted in a muffle furnace at different temperatures. The cinder was leached in three different percentage solutions of acid, as a result, magnesium chloride was obtained by roasting the saponite mineral at a temperature of 600-800C, and leached using the hydrocloric acid decomposition method, and in the next step by treating it with ammonium dihydrogen phosphate.

The pursuit of sustainable construction materials has driven innovative research into alternative cementitious components that can reduce the environmental footprint of concrete production. This study explores the utilization of micronised biomass silica as a novel cement replacement material in concrete formulations. Micronised biomass silica, derived from agricultural waste, offers not only an eco-friendly solution to waste management but also the potential to enhance concrete properties. This paper presents a comprehensive investigation into the effects of incorporating micronised biomass silica on the mechanical, durability, and environmental performance of concrete. Through a combination of experimental testing and analytical analysis, the study demonstrates the feasibility of harnessing this bio-sourced material to advance sustainable construction practices.

The paper presents the results of experiments to study the properties of water absorption and water resistance of the waterproofing material "Polyisol-M". As a result of experimental analysis the water absorption capacity of the waterproofing material "Polyisol-M" with thickness of 5 mm was 0,59 %, and the value of mass loss was 2,42 %, therefore it was recommended to use it in production.

This article describes the possibilities of teaching drawing in the subjects of engineering graphics using engineering computer graphics programs, making geometric figures using the AutoCAD program, volumetric modeling of objects, cutting, applying color schemes and showing dimensions.