Model for the Logic Determination of Innovation Ideas for Technical Systems

2020 ◽  
Author(s):  
Gunther Schuh ◽  
Thomas Schwarberg ◽  
Jonas Muhlbauer ◽  
Nihan Yildirim
Keyword(s):  
Technical Systems

scholarly journals The vector optimization and modeling of a technical systems

2018 ◽  
Vol 224 ◽  
pp. 04020
Author(s):  
Leonid B. Matusov
Keyword(s):  
Parameter Space ◽  
Multicriteria Optimization ◽  
Feasible Solution ◽  
Solution Set ◽  
Identification Problems ◽  
Design Variables ◽  
Technical Systems ◽  
The Mathematical Model ◽  
Term Identification

The construction a feasible solution set with a given accuracy is a main problem in multicriteria optimization and modeling. In order to construct the feasible solution set, a method called the Parameter Space Investigation has been created and successfully integrated into various fields of industry, science, and technology. Multicriteria modeling (identification) is a new direction that is of great value in applications. In the most common usage, the term “identification” means construction of the mathematical model of a system and determination of the parameters (design variables) of the model. The construction a feasible solution set with a given accuracy is a common way for solving multicriteria optimization and modeling problems. The issues of the estimation of the Parameter Space Investigation method convergence rate, the approximation of the feasible solution set are described. Besides these, the multicriteria identification problems of mechanical systems are discussed too.

scholarly journals Analysis of assessment criteria for selected systems of transport means operation

2018 ◽  
Vol 182 ◽  
pp. 02003
Author(s):  
Łukasz Muślewski ◽  
Leszek Knopik ◽  
Bogdan Landowski ◽  
Oleh Polishchuk
Keyword(s):  
Time Moment ◽  
Transport Systems ◽  
Time Interval ◽  
Sociotechnical System ◽  
Human Driver ◽  
System Functioning ◽  
Technical Systems

The problems discussed in the study are connected with evaluation of complex technical systems functioning, in particular, transport systems. It was assumed that evaluation of their functioning depends on fulfilment degree of selected criteria. Therefore, it is important to determine a set of criteria including their type, number and importance. Since the research object is a public city transport system considered to be a sociotechnical system of the type: human (driver) –machine (vehicle) and the environment <H-M-E>, the criteria to be used for the assessment must include behavior of humans, operation of transport means, and the environmental impact. Thus, selection and determination of importance of significant, time variable, measurable and independent characteristics whose values, in a given time moment or a given time interval, define fulfillment degree of the criteria provide the basis for evaluation of such systems functioning. The quality of technical systems functioning in time is assessed on the basis of the criteria fulfilment degree or comparison and classification of different systems of the same type. It needs to be emphasized that the choice of optimal methods for selection of relevant criteria and determination of their impact on the analyzed system functioning is the research subject of study.

scholarly journals Implementation of A Geometric Constraint Regularization For Multibody System Models

2014 ◽  
Vol 61 (2) ◽  
pp. 365-383 ◽  
Author(s):  
Andreas Müller
Keyword(s):  
Multibody System ◽  
Time Integration ◽  
Simulation Method ◽  
Dynamics Simulation ◽  
Computational Performance ◽  
Kinematic Loops ◽  
Computationally Expensive ◽  
Technical Systems ◽  
Loop Constraints

Abstract Redundant constraints in MBS models severely deteriorate the computational performance and accuracy of any numerical MBS dynamics simulation method. Classically this problem has been addressed by means of numerical decompositions of the constraint Jacobian within numerical integration steps. Such decompositions are computationally expensive. In this paper an elimination method is discussed that only requires a single numerical decomposition within the model preprocessing step rather than during the time integration. It is based on the determination of motion spaces making use of Lie group concepts. The method is able to reduce the set of loop constraints for a large class of technical systems. In any case it always retains a sufficient number of constraints. It is derived for single kinematic loops.

scholarly journals The Use of Optical Methods in the Analysis of the Areas with Stress Concentration

2018 ◽  
Vol 68 (2) ◽  
pp. 61-76 ◽  
Author(s):  
Miroslav Pástor ◽  
Peter Frankovský ◽  
Martin Hagara ◽  
Pavol Lengvarský
Keyword(s):  
Stress Concentration ◽  
Digital Image Correlation ◽  
Mechanical Stress ◽  
Digital Image ◽  
Image Correlation ◽  
Optical Methods ◽  
Stress Fields ◽  
Plane Model ◽  
Technical Systems

AbstractAnchoring parts of technical systems are often damaged due to the heavy forces acting on these systems during their operation. For that reason, various modifications are suggested and created on the anchoring screws, which should help to reduce the mechanical stress values in a place of the first load-bearing thread of a female screw. For the determination of stress fields on the surface of a plane model of a threaded joint, two non-contact optical methods were used – conventional transmission photoelasticimetry and modern digital image correlation.

ENSURING RELIABILITY FOR COMPLEX TECHNICAL SYSTEMS LIKE MOVABLE MOUNTINGS OF SPECIAL PURPOSE

2020 ◽  
pp. 42-47
Author(s):  
V. M. Trukhanov ◽  
N. V. Fedorova ◽  
G. V. Trukhanov
Keyword(s):  
Service Life ◽  
Complex Systems ◽  
Qualitative Analysis ◽  
Spare Parts ◽  
Failure Recovery ◽  
Recovery Times ◽  
Distribution Laws ◽  
Complex Technical Systems ◽  
Technical Systems

The article is devoted to the question of ensuring the reliability of complex technical systems such as special purpose mobile units for extended service life. The features of maintainability of complex systems as one of the properties of mobile units, which must be taken into account in the development of structures, provide them in the manufacture and maintain during operation at a given level of quantitative reliability. The qualitative analysis of design solutions to ensure accessibility to places of control and maintenance, meet the requirements for interchangeability, unification and structural and technological continuity is described. Mathematical dependences for assessing the maintainability of special-purpose mobile installations in the form of distribution laws and failure recovery times are presented, as well as mathematical dependencies on the determination of spare parts and materials necessary for timely ensuring reliability, in particular maintainability, during operation.

scholarly journals Determination of Structural Parameters of Multilayer Perceptron Designed to Estimate Parameters of Technical Systems

2017 ◽  
Vol 9 (10) ◽  
pp. 57-62 ◽  
Author(s):  
Zhengbing Hu ◽  
◽  
Igor A. Tereykovski ◽  
Lyudmila O. Tereykovska ◽  
Volodymyr V. Pogorelov
Keyword(s):  
Multilayer Perceptron ◽  
Structural Parameters ◽  
Technical Systems

scholarly journals Semi-Markov model of a technical system with the component-wise instantly replenished time reserve

2018 ◽  
Vol 224 ◽  
pp. 04008 ◽  
Author(s):  
Yuriy E. Obzherin ◽  
Stanislav M. Sidorov ◽  
Sergey N. Fedorenko
Keyword(s):  
Markov Model ◽  
Approximate Determination ◽  
Two Component System ◽  
Additional Time ◽  
Component System ◽  
Time Redundancy ◽  
Two Component ◽  
Technical Systems ◽  
Time Reserve

Time redundancy is one of the methods to increase the reliability and efficiency of technical systems. When it is used, the system is given additional time (a time reserve) for restoring characteristics. In this paper we construct a semi-Markov model of a two-component system with a component-wise instantly replenished time reserve. In this paper we construct a semi-Markov model of a two-component system with a component-wise instantaneous replenishment of the time reserve. For an approximate determination of the stationary characteristics of the reliability of the system, the phase merging scheme algorithm is used.

Semi-Markov model of the functioning of redundant measuring instruments, taking into account the frequency of verification

2021 ◽  
pp. 22-27
Author(s):  
Vladimir I. Mishchenko ◽  
Alexander N. Kravtsov ◽  
Timur F. Mamleev
Keyword(s):  
Markov Process ◽  
Markov Model ◽  
Markov Processes ◽  
Measuring Instruments ◽  
The Real ◽  
Real Process ◽  
Semi Markov Process ◽  
Technical Systems ◽  
Semi Markov Processes

The problem of modeling the process of functioning of redundant measuring instruments is considered. On the basis of the developed model, the determination of the frequency of verification of complex duplicated measuring instruments based on the semi-Markov model of the process of their functioning is justified. The relevance of the application of the theory of semi-Markov processes for modeling the functioning of redundant technical systems, including measuring instruments, is shown. A semi-Markov model of the process of functioning of measuring instruments has been developed, which allows us to take into account the influence of the frequency of verification, the provision of measuring instruments with spare elements, as well as the level of reliability and maintainability on the reliability of measuring instruments. A method is found for defining a semi-Markov process that correctly and adequately approximates the real process. The indicator of the effectiveness of the functioning of the measuring instruments and the corresponding model is the availability factor of the measuring instruments.

scholarly journals THE DETERMINATION OF THE PROCEDURE OF DIAGNOSTICS OF THE AXLE NODES OF LOCOMOTIVES ON THE BASIS OF DATA ABOUT THEIR DAMAGE IN MAINTENANCE

2015 ◽  
Vol 2 (158) ◽  
Author(s):  
Yurii Datsun ◽  
Georgy Kolesnichenko
Keyword(s):  
Technical Condition ◽  
Technical State ◽  
The Future ◽  
Technical Systems ◽  
First Diagnosis

In the article the damage of the axle boxes of locomotives CHS-2 in operation are analyzed. The mostfrequently in use bearings of axle nodes are damaged (their rings and separators). On the basis of histogramsis determined that the distribution obeys the Weibull law. Based on the analysis of the nature of the damagethe main directions of improving the reliability of axle nodes of locomotives in maintenance are determined.To determine the technical condition of axle boxes the usage of the methods and technical systems based onthe analysis of parameters of vibration is proposed. The article presents a short analysis of existing methodsof diagnostics of the bearings of nodes. As a result of the calculation according to the criterion of uptime thetime of first diagnosis of axle equipment after repair is defined.To further determine the frequency of diagnosis the criterion of change of parameters of the technical state ofthe node is proposed to use. For the current conditions of the maintenance of locomotives the introduction ofdiagnostic systems that have the functions of anticipating and shaping the future recommendations accordingto the previous diagnostics would be as the most acceptable option.

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