Type Of Technical Systems Research Articles

Technical Systems Effectiveness Management Technique

Currently, the task of performing a target function by a technical system with minimal resource costs is urgent. Obtaining the beneficial effect of a vehicle depends on many factors, which can become the basis for the formation of a control effect on the functional part of the system. At the same time, it is necessary to take into account the importance of a useful (target) effect in order to manage the technical systems effectiveness. The purpose of this article is to describe an instrument that allows adaptively redistributing the resource spent on the implementation of a purposeful process in the vehicle, based on the requirements of the consumer function and the target effect. As a result of the conducted research, the article proposes a technique for redistributing the resource of a technical system in the interests of its effectiveness management. The features of the presented technique are the visibility of its results presentation, as well as the possibility of application in evaluating the effectiveness and it`s management in relation to various types of technical systems, which will allow to substantiate the practical significance of obtained results.

THE INFLUENCE OF VIBRATIONS ON THE EFFICIENCY OF THE INTERNAL COMBUSTION ENGINE

This article is devoted to the study of the influence of vibrations on the efficiency and reliability of the internal combustion engine (ICE). The authors consider in detail the amount of vibration that occurs as a result of engine operation and its possible consequences for various components. The article examines modern methods of vibration analysis and their impact on various types of technical systems, including electromechanical, hydromechanical, and thermal energy equipment. Vibration reduction technologies and their implementation to increase the efficiency of technical systems are being studied. The study also includes consideration of possible technologies and innovations aimed at reducing the impact of vibration on engine performance, such as the use of shock absorbers, design optimization and the use of new materials. In particular, the article analyzes the use of the latest materials for vibration reduction, the development of control and diagnostic systems, and also studies the impact of vibrations on human health and the environment. The importance of considering vibration aspects in the process of design, operation and maintenance of technical equipment is noted. Possible implications for measurement accuracy, electronic stability, and overall control efficiency are highlighted. The authors offer practical solutions to reduce these negative impacts, including the use of innovative technologies and the development of improved electronics systems. This article is aimed at the engineering and scientific community, as well as at professionals who are interested in improving the efficiency of technical systems and understanding the effect of vibrations on their functioning. The conclusions and recommendations presented in this paper can be used for further research and development in the field of vibration engineering and technology.

Loading policy minimizing cumulative unsupplied demand of production system with storage

The loading level applied during a system's operation can greatly affect the system's productivity and time-to-failure distribution. The optimal loading problem aims to determine loading levels leading to the best system performance. While this problem has been solved for many types of technical systems, very little work was devoted to production systems (PSs) with storage and the existing model assumed the storage is fully reliable and failed to consider effects of the storage's loading levels. This paper makes contributions by solving the optimal loading problem for an imperfect PS having an unreliable storage with possibility to choose different load levels that determine the storage's uploading and downloading paces and load levels that determine the productivity of the PS. Moreover, the downloading load level is chosen dynamically depending on the beginning time of the storage downloading. We evaluate and minimize the expected cumulative unsupplied demand (EUD) during the mission, and perform a detailed case study of a water supply system to demonstrate the proposed model and optimal loading policy solutions. Influences of several model parameters (mission time, PS's reliability, storage's reliability, capacity and initial filling) and their interactions on the EUD and optimization solutions are also examined through examples.

ANALYSIS OF TEST EQUIPMENT FOR INVESTIGATION OF MATERIALS UNDER A STRONG LOAD APPLICATION

An analysis of modern testing equipment to establish the mechanical properties of different in structure and origin of building materials. As a result, it was established, that the most effective for testing are foreign electromechanical and servo-hydraulic machines of different configurations. It is determined that this type of technical systems allows to study different types of materials, including high-strength, compressive, tensile, bending and other types of loads in accordance with current international regulations. The article analyzes the principles of operation of the universal test machine INSTRON and the universal servo test machine UIT STM 100S. The configuration of such modern technical systems involves the availability of electronic computers and software, which allows testing in automatic mode, program research factors, determine the current and maximum values of mechanical properties of building materials, perform mathematical calculation of characteristics, reproduce information on the device screen, build research diagrams in electronic and printed form. It has been found that the advantages of such test machines are a load of up to 60 tons. It was determined that the universal machine UIT STM 100S is characterized by a large traverse stroke and a wide range of test speeds, which allows to expand the solution of quality control problems in industry. It is also established that the UIT STM 100S has software that includes a standard library of test methods according to regulatory documentation. The advantages of such a machine are the possible expansion of the standard information base necessary for the operation of the standards or the installation of an additional software module that provides the ability into independently supplement the standard library. Given the wide range of measurements of the universal testing machine UIT STM 100S, we envisage its use for the study of deciduous and coniferous wood in modern rigid test mode.

Structure and classification of unified energy agents as a base for the systematic development of future energy grids

The ongoing conversion of our energy supply encounters a great interest of many different market players that were originally located in different industries. As a consequence, a vast amount of proprietary solutions for “smart” energy applications is flooding the market. This tends to be rather a problem than part of the solution for the systematic development of future energy grids. Here, the absence of necessary unifications and standards blocks further developments that would enable the creation of novel, market-driven and hybrid control solutions for various types of technical systems. To overcome these problems, we present in this article our notion and the definition of a unified autonomous software entity that we call Energy Agent. Based on the energy conservation law and a generalized energy option model, we claim that our Energy Agent approach has the capabilities to enable cross domain interactions between different types of energy systems and networks. Further we will outline a systematic development process for Energy Agents that considers implementation, simulation, test-bed application and a real on-site usage. By taking into account these development stages, we expect to concurrently develop a novel laboratory that enables to competitively test and validate new and hybrid control solutions before they are applied in real systems.

Functional hierarchy and algorithms for managing complex technical systems

Based on the research, we suggest the following sequence of actions in the synthesis of new or improve the existing organization of the system: determination of elements (subsystems) performance, grouping items subsystems for specific tasks performed, and analysis tasks of planning, management and control in groups, identification based on the analysis of the number of controls the formation of the structure of individual levels as models of technical systems. Thus, the combination of purely organizational practices and management of technical systems allows the development of algorithms for generalized type whose use should be recommended in complex systems. Obviously, in each case, binding to the actual conditions of the system based on a detailed analysis of each application subsystem. The aim is to develop recommendations for the synthesis of new or upgrading existing organization functioning of the systems, including security systems, as well as an algorithm for the management of the generic type of technical systems of varying complexity and purpose.

An evaluation of the multi-state node networks reliability using the traditional binary-state networks reliability algorithm

Abstract A system where the components and system itself are allowed to have a number of performance levels is called the Multi-state system (MSS). A multi-state node network (MNN) is a generalization of the MSS without satisfying the flow conservation law. Evaluating the MNN reliability arises at the design and exploitation stage of many types of technical systems. Up to now, the known existing methods can only evaluate a special MNN reliability called the multi-state node acyclic network (MNAN) in which no cyclic is allowed. However, no method exists for evaluating the general MNN reliability. The main purpose of this article is to show first that each MNN reliability can be solved using any the traditional binary-state networks (TBSN) reliability algorithm with a special code for the state probability. A simple heuristic SDP algorithm based on minimal cuts (MC) for estimating the MNN reliability is presented as an example to show how the TBSN reliability algorithm is revised to solve the MNN reliability problem. To the author's knowledge, this study is the first to discuss the relationships between MNN and TBSN and also the first to present methods to solve the exact and approximated MNN reliability. One example is illustrated to show how the exact MNN reliability is obtained using the proposed algorithm.