IMPLEMENTATION OF A DIGITAL TWIN USING THE EXAMPLE OF STATE MONITORING OF THE REJOINT EXOSKELETON TRAINER

2020 ◽  
Vol 52 (4) ◽  
pp. 112-118
Author(s):  
STANISLAV E. DRAGUNOV ◽  
◽  
SVETLANA S. POPOVA ◽  
ANNA VLADIMIROVNA MATOKHINA ◽  
MAXIM A. CHERNETSKY ◽  
...  
Keyword(s):  
Muscle Activity ◽  
The State ◽  
State Monitoring ◽  
Quality Maintenance ◽  
Digital Twin ◽  
Monitoring Process ◽  
Operation Control ◽  
Digital Copy ◽  
Digital Shadow ◽  
Twin Methodology

This article discusses the approbation of the digital twin methodology for condition monitoring and operation control within the framework of the lease, the Rejoint exoskeletal trainer used to restore muscle activity after injuries and strokes. To test the work, digital shadow technology is used, which makes it possible to obtain information about the state of the device in remote operation, which improves the quality. maintenance and increase the life of the device. The monitoring process includes the installation of additional sensors on the device, which allow collecting realtime data on the position of the nodes and the state of the device, transmitting data to the server for subsequent analysis. The obtained data allow carrying out, in addition to digital analytics, computer simulations, providing for analysis a digital copy of the actually operated device.

scholarly journals Digital Twin: Origin to Future

2021 ◽  
Vol 4 (2) ◽  
pp. 36
Author(s):  
Maulshree Singh ◽  
Evert Fuenmayor ◽  
Eoin Hinchy ◽  
Yuansong Qiao ◽  
Niall Murray ◽  
...  
Keyword(s):  
Real Time ◽  
Remote Access ◽  
Physical Entity ◽  
Industrial Systems ◽  
Digital Twin ◽  
Planning Optimization ◽  
Different Types ◽  
Pros And Cons ◽  
Number Of Publications ◽  
Digital Shadow

Digital Twin (DT) refers to the virtual copy or model of any physical entity (physical twin) both of which are interconnected via exchange of data in real time. Conceptually, a DT mimics the state of its physical twin in real time and vice versa. Application of DT includes real-time monitoring, designing/planning, optimization, maintenance, remote access, etc. Its implementation is expected to grow exponentially in the coming decades. The advent of Industry 4.0 has brought complex industrial systems that are more autonomous, smart, and highly interconnected. These systems generate considerable amounts of data useful for several applications such as improving performance, predictive maintenance, training, etc. A sudden influx in the number of publications related to ‘Digital Twin’ has led to confusion between different terminologies related to the digitalization of industries. Another problem that has arisen due to the growing popularity of DT is a lack of consensus on the description of DT as well as so many different types of DT, which adds to the confusion. This paper intends to consolidate the different types of DT and different definitions of DT throughout the literature for easy identification of DT from the rest of the complimentary terms such as ‘product avatar’, ‘digital thread’, ‘digital model’, and ‘digital shadow’. The paper looks at the concept of DT since its inception to its predicted future to realize the value it can bring to certain sectors. Understanding the characteristics and types of DT while weighing its pros and cons is essential for any researcher, business, or sector before investing in the technology.

scholarly journals SPECIALIZATION AS A SYSTEMIC TOOL FOR THE DEVELOPMENT OF THE GARMENT INDUSTRY IN DIGITALIZATION

2020 ◽  
Vol 2 (32) ◽  
pp. 68-74
Author(s):  
L.R. Girfanova ◽  
◽  
R.R. Abdyrasulova ◽  
Keyword(s):  
Product Life Cycle ◽  
Digital Technologies ◽  
Garment Industry ◽  
Additive Technologies ◽  
Light Industry ◽  
Digital Twin ◽  
Stage Of Development ◽  
Wide Range ◽  
The Creation ◽  
Digital Shadow

The development of digital technologies offers a wide range of opportunities to increase production efficiency, which relies on known tools and methods that transform in modern conditions. Many researchers note that the specialization most characteristic of complex knowledge-intensive industries has high prospects and is evident in all sectors of the national economy. Its combination with cooperation and outsourcing brings momentum to the development of both individual enterprises and the industry as a whole. It has been found that in light industry, which had a developed system of specializations, the return to this practice is difficult due to significant changes in the industries related to the liquidation of large mass production enterprises and the lag in the creation of digital twins, which are the basis at the stage of production preparation. Lost in the process of transition to a market economy, large production with a complete cycle is now successfully replaced by specialized small and medium-sized production, using high-performance equipment combined with modern digital technologies. It is obvious that the garment industry has entered a new cycle of development characterized by a high degree of specialization against the background of the application of digital technologies at all stages of the product life cycle. The significant lag in the application of digital technologies at the stage of production of light industry products is overcome, especially in the transition to additive technologies. It is noted that the digital shadow complements the information digital twin, which is especially relevant from the point of view of production. The introduction of digital technologies in specialized industries allows to achieve higher productivity and payback of invested capital than in standard production, where such investment is "blurred" due to the lag of related processes of the enterprise. It has been revealed that the modern stage of development of light industry is characterized by the application of fundamentally new technologies based on the creation of a digital twin and digital shadow, which create prerequisites for industrial application of additive technologies in industry. Key words: specialization, cooperation, digitalization, development of light industry

scholarly journals Сarcinogenic substances in the atmospheric air of Dnipro city and risk to the population

2021 ◽  
Vol 26 (1) ◽  
pp. 226-231
Author(s):  
A.M. Serdiuk ◽  
I.O. Chernychenko ◽  
O.M. Lytvychenko ◽  
V.F. Babii ◽  
O.Ye. Kondratenko ◽  
...  
Keyword(s):  
Air Pollution ◽  
Physicochemical Analysis ◽  
Carcinogenic Risk ◽  
The State ◽  
State Monitoring ◽  
Dynamic Changes ◽  
Atmospheric Air ◽  
Emergency Situations ◽  
Chromium Vi ◽  
Industrial Center

The objective – to study the dynamic changes for the health risk of the population of the industrial center in accordance with the state of atmospheric air pollution with carcinogenic compounds. The assessment of the state of atmospheric air pollution was carried out by us based on the results of physicochemical analysis of samples taken in places attached to the locations of stationary posts of state monitoring. The concentration of identified substances was determined by conventional methods: spectral-luminescent and gas chromatographic. Heavy metal concentrations were determined using data from the Central Geophysical Observatory of the Ministry of Emergency Situations. The calculation of the inhalation load of chemical carcinogens and the risks associated with them (non-carcinogenic and carcinogenic) was carried out in accordance with domestic guidelines. The assessment of dynamic changes in the nature of atmospheric air pollution with a complex of carcinogenic substances was made 5 of them are constantly recorded at levels exceeding hygienic standards. When compared with the reference concentrations, all compounds are characterized by high coefficients, indicating the likelihood of their effect on the body's immune system, respiratory organs, malformations, etc. A high individual carcinogenic risk of the effect of chromium VI and nitrosamines was determined. A total carcinogenic risk is formed at levels of 2.5 – 3.9×10-3, which should be considered as high; this requires development and implementation of preventive measures. On the territory of the industrial center, a high level of air pollution with increased carcinogenic and non-carcinogenic risk is stably registered.

Concept of a System Architecture for a Simulation Data Management In the Digital Twin

2021 ◽  
Author(s):  
Benjamin Röhm ◽  
Reiner Anderl
Keyword(s):  
Product Development ◽  
Data Management ◽  
Input Data ◽  
Integrated Design ◽  
Simulation Data ◽  
Output Data ◽  
Digital Twin ◽  
Input And Output ◽  
Simulation Input ◽  
Digital Shadow

Abstract The Department of Computer Integrated Design (DiK) at the TU Darmstadt deals with the Digital Twin topic from the perspective of virtual product development. A concept for the architecture of a Digital Twin was developed, which allows the administration of simulation input and output data. The concept was built under consideration of classical CAE process chains in product development. The central part of the concept is the management of simulation input and output data in a simulation data management system in the Digital Twin (SDM-DT). The SDM-DT takes over the connection between Digital Shadow and Digital Master for simulation data and simulation models. The concept is prototypically implemented. For this purpose, real product condition data were collected via a sensor network and transmitted to the Digital Shadow. The condition data were prepared and sent as a simulation input deck to the SDM-DT in the Digital Twin based on the product development results. Before the simulation data and models are simulated, there is a comparison between simulation input data with historical input data from product development. The developed and implemented concept goes beyond existing approaches and deals with a central simulation data management in Digital Twins.

Monitoring the Condition of Mineral Nutrition of Crops Using UAV for Rational Use of Fertilizers

2019 ◽  
pp. 293-319 ◽  
Author(s):  
Dmytro Sergiyovich Komarchuk ◽  
Vitalii Pylypovych Lysenko ◽  
Oleksii Oleksandrovych Opryshko ◽  
Nataliia Anatoliivna Pasichnyk
Keyword(s):  
Mineral Nutrition ◽  
Metrological Support ◽  
Digital Camera ◽  
The State ◽  
Infrared Range ◽  
Agricultural Crops ◽  
Optical Range ◽  
State Monitoring ◽  
Rational Use ◽  
Official Data

The reviewed problem deals with the metrological support of sensory equipment using cameras with standard and infrared lenses. The elaborated method to use UAVs for remote shooting of agricultural crops and obtaining images is to be used to determine the level of nitrogen provision for grain crops has been developed. For radiofrequency correction of lighting changes while mineral nutrition state monitoring, it is recommended to use a method with the application of official data to be calculated on the basis of camera's regular camera exposure meter measurements. It is advisable to use an infrared lens for monitoring the state of individual crops using digital non-specialized cameras instead of optical one. Exampling GoPro Hero 4 digital camera, it has been found that there are three channels to use IR lens which have the characteristics of fixing radiation either in the infrared range or in the red area of the optical range.

A New Model to Accelerate Data Collection

2015 ◽  
Vol 1083 ◽  
pp. 155-160
Author(s):  
Ke Wei Li
Keyword(s):  
Data Collection ◽  
Assembly Line ◽  
Model Structure ◽  
State Monitoring ◽  
Monitoring Technology ◽  
New Model ◽  
Model Based ◽  
Monitoring Process ◽  
Data Collecting

This paper presents a new model based on assembly line to accelerate the speed of data collection. Traditional data collecting and state monitoring technology requires a CPU which is simple but results time consuming. Assembly line models make the data collection and monitoring process simultaneously and hence improve the efficiency. This paper compares several processing hierarchy and at the end propose a feasible model structure.

scholarly journals Research on the State-of-art, Connotation and Key Implementation Technology of Assembly Process Planning with Digital Twin

2019 ◽  
Vol 55 (17) ◽  
pp. 110
Author(s):  
GUO Feiyan ◽  
LIU Jianhua ◽  
ZOU Fang ◽  
ZHAI Yunong ◽  
WANG Zhongqi ◽  
...  
Keyword(s):  
Process Planning ◽  
The State ◽  
Assembly Process ◽  
Assembly Process Planning ◽  
Digital Twin ◽  
State Of Art

Optimal control of the digital twin of the enterprise.

2021 ◽  
Vol 5 ◽  
Author(s):  
S.N. Masaev ◽  
Keyword(s):  
Optimal Control ◽  
Kalman Filter ◽  
Computational Complexity ◽  
Execution Time ◽  
The State ◽  
Control Methods ◽  
Optimal Ratio ◽  
Digital Twin ◽  
The Past ◽  
Production Processes

The enterprise is presented as a digital twin of interrelated production processes, support processes and administrative processes. A semantic indicator for a general assessment of the state of the system at different points in time is given. The semantic indicator is applied to assess the optimal control by Kalman filter. The obtained estimates of optimal control make it possible to take into account the resources consumed by the processes in the past periods. The obtained optimal control can be used with other control methods through control and observation matrices. Estimates of the optimal ratio of values are obtained: the amount of the resource in the system, the method of attracting the resource, the execution time of the method, the computational complexity of the method.

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