scholarly journals Identification of temporal anomalies of spectrograms of vibration measurements of a turbine generator rotor using a recurrent neural network autoencoder

2021 ◽  
Vol 9 (2) ◽  
pp. 78-87
Author(s):  
V. P. Kulagin ◽  
D. A. Akimov ◽  
S. A. Pavelyev ◽  
E. O. Guryanova
Keyword(s):  
Experimental Studies ◽  
Emergency Situation ◽  
The State ◽  
Turbine Generator ◽  
Emergency Situations ◽  
Turbine Generators ◽  
Automatic Mode ◽  
Learning Techniques ◽  
Decision Making Model ◽  
And Control

A method is proposed for recognizing pre-emergency conditions of rotary installations based on the use of the Hamming window and advanced Deep Learning techniques in retrospective analysis of the results of accounting for the factors of operation of a turbine generator, diagnostics and control under critical impacts. A program of experimental studies on the model of a turbine plant with simulation of faults and receiving vibration signals has been developed. An experiment based on the homostatic method of checking the signal with Hamming windows, in the frequency, time and modulation domains and common initial data, allows one to determine the most promising signal characteristics for identification. A method has been developed for monitoring the state of turbine generators in an automatic mode for timely notification of the CHPP personnel about the appearance of signs of pre-emergency situations, as well as about the nature of faults by the method of predicting the state of a pre-emergency situation using convolutional neural networks implemented in the form of a recurrent autoencoder. Clustering is applied and clusters are identified that correspond to the spectrograms of pre-emergency situations. The effectiveness of the use of the homostatic method in combination with correlation analysis is based on the decision-making model described in more detail in other works.

scholarly journals Results of comparative experimental studies of turning conditions of tractor trains and observance of the width of the transport corridor

2021 ◽  
Vol 3 (45) ◽  
pp. 20-20
Author(s):  
Alexander Saakian ◽  
◽  
Keyword(s):  
Plant Protection ◽  
Experimental Studies ◽  
Emergency Situation ◽  
Plant Protection Products ◽  
Automatic Device ◽  
The Road ◽  
Emergency Situations ◽  
Transport Unit ◽  
Turning Radius ◽  
Safe Transport

Improving the efficiency of using tractor-transport units (tractor trains) in the central agricultural zone of the Amur Region is an economically important issue, especially relevant for small peasant farms. This is due to the fact that in such farms the area of fields occupied for the cultivation of agricultural crops is relatively small, while most of them belong to the category of slope lands. It was also found that during the periods of sowing and harvesting operations, traffic on agricultural roads is hampered by safety conditions due to regional climatic features, which include a large amount of precipitation. In this connection, the use of vehicles for the transportation of seed, fertilizers, plant protection products and other goods, and the export of crops in these conditions seems to be a rather complicated operation. It should be borne in mind that in many, the main energy means are wheeled tractors of class 1.4, and not cars of various cross-country ability, therefore, in order to increase the efficiency of the use of available mechanization means, it is necessary to use them for the transport of goods, and as part of multi-link tractor trains in particular. At the same time, when driving on on-farm field roads with a limited width, the turn of multi-link trains is difficult due to the failure of the second and subsequent aggregated trailers to comply with the safe transport corridor, since the second trailer, when turning, shifts to the center of the road and creates an emergency situation for oncoming traffic. In order to eliminate the identified shortcomings and create safe conditions for traffic, an automatic device was developed that allows you to shift the second trailer when turning from the center to the side of the passing traffic, thereby regulating the transport corridor and not creating emergency situations for oncoming traffic. The paper presents the results of experimental studies on the use of a transport unit consisting of a class 1.4 tractor and two 2PTS-4 trailers in the production modes of multi-link tractor trains. Keywords: TRACTOR, TURN, TURNING RADIUS, TRAILER, OFFSET, WIDTH OF THE TRANSPORT CORRIDOR, EFFICIENCY

scholarly journals The scientific analysis of risks in life-support of a person, a society and the state

2019 ◽  
Vol 16 (2) ◽  
pp. 70-86 ◽  
Author(s):  
N. A. Makhutov ◽  
M. M. Gadenin ◽  
O. N. Yudina
Keyword(s):  
Life Support ◽  
Quantitative Measure ◽  
The State ◽  
Emergency Situations ◽  
Base Parameters ◽  
Scientific Analysis ◽  
Depth Analysis ◽  
Key Factor ◽  
Estimation And Control ◽  
And Control

It is showed that the key factor at the solution of problems of an estimation and control of risks for social, natural and technogenic spheres is use of the concept of the analysis and monitoring of the risks, founded on determination of base parameters of a current and probable dangerous state of analyzed socially-natural-technogenic system. Importance of safety maintenance and protect-ability tasks of basic practices and appearances in such system is interlinked to spreading of scientific possibilities and actual methods of decrease of risks, and also with an in-depth analysis of a spectrum of dangers, defiances, threats, crises, emergency situations, disasters at increment of losses from them to a person, a society, the state, an environment and an ability to live of infrastructure. The universal quantitative measure of probabilities of initiation and implementation of the indicated unfavorable events and processes in a combination to accompanying them losses are risks of the stacked state and prospects of evolution of considered system. Builted on results of corresponding comprehensive analysis the theory, algorithms and program complexes for determination, maintenances and raises of protectability of objects in social, natural and technogenic spheres taking into account the bundled to them risks are scientific baseline for a justification of decrease of their interlinked values to acceptable level. Making and service of objects and an infrastructure of ability to live for a person, a society and the state on the basis of a meeting the requirements to acceptable levels of risks and to guard of objects from accidents and disasters present an essence of transition to new level of the state strategic planning certified to the strategy of national safety of Russia.

scholarly journals Problems of Preventive Work in the Field of Fire Safety

2019 ◽  
pp. 73-79
Author(s):  
V. V. Antonchenko
Keyword(s):  
Fire Safety ◽  
The State ◽  
Fire Prevention ◽  
Safety Control ◽  
The Real ◽  
Emergency Situations ◽  
Preventive Work ◽  
Problematic Area ◽  
High Level ◽  
And Control

The article analyzes the activities of supervisory authorities in implementing control and supervisory measures in the field of fire safety. The author believes that today the society lives in the conditions of imitation of activity in this important area, which is not related to the real provision of fire safety. One of the circumstances allowing drawing such a conclusion is the transfer of fire safety supervisory functions and control powers to nongovernmental institutions.Based on the analysis of the mechanisms of fire safety control and supervision — both the state fire supervision bodies under the Ministry of Emergency Situations of Russia and companies providing services for the fire audit — the conclusion is made about inadmissibility of eliminating the State from the principal, active and purposeful work on fire prevention and narrowing the powers of state bodies in this extremely important and, at the same time, very problematic area. The author believes that the neglect of the need to maintain a high level of fire safety, including by legal means, significantly weakens the level of protection of an individual and a society from fires.

Development and Application of an Infant and Toddler Healthcare Program for Marriage-Migrant Women

2019 ◽  
Vol 14 (1) ◽  
pp. 19-28
Author(s):  
Eun Young Kim ◽  
Jun Hee Noh ◽  
Eun Young Jung ◽  
Eun Ju Lim
Keyword(s):  
Self Efficacy ◽  
Emergency Situation ◽  
Relevant Information ◽  
First Aid ◽  
Migrant Women ◽  
Emergency Situations ◽  
Significant Difference ◽  
Healthcare Program ◽  
Knowledge And Attitude ◽  
And Control

This study was conducted among Vietnamese marriage-migrant women to investigate the effect of both cardiopulmonary resuscitation (CPR) and first aid healthcare trainings on their knowledge and attitude towards CPR, self-efficacy, and first-aid. The experimental and control groups revealed statistically significant differences across all dependent variables: knowledge of CPR (t = 3.26, p = 0.002); attitude towards CPR (t = 4.46, p = 0.019); self-efficacy during CPR (t = 2.77, p = 0.010); and finally, knowledge on coping with emergency situations (t = 2.77, p = 0.008). A significant difference was indicated in their knowledge and attitude towards CPR, self-efficacy, and first aid depending on whether they attended the healthcare training program, which suggested its educative effect. CPR training and relevant information should be continually provided to Vietnamese marriage-migrant women to maintain this effect, and help provide them with guidelines to deal with an emergency situation faced by their family or neighbors.

Gas Turbine Information and Control System

1980 ◽  
Author(s):  
D. Johnson
Keyword(s):  
Gas Turbine ◽  
Microcomputer System ◽  
Central Control ◽  
Disk Drives ◽  
Control Room ◽  
Turbine Generator ◽  
Turbine Generators ◽  
Full Control ◽  
Command Sequence ◽  
And Control

A distributed microcomputer system is being developed so that eight gas turbine generators can communicate over simple serial “party” cables to computers located in a central control room. There, the Station Operator’s Console gives an operator full control over the turbines, while presenting status and annunciator information on two CRTs. Redundant microcomputers inside this console drive two “party” cables for improved reliability. These microcomputers interface through telemetry equipment to the system dispatch center 60 Km from the turbine site, completing a command sequence for eight turbines in 2.5 sec. When the system is not processing commands, it collects data for the maintenance minicomputer. Over 200 signals from each turbine generator are used to create a significant data base on dual disk drives. The maintenance computer generates several logs, condition analyses and plots to support diagnostic and maintenance messages.

Machine training to the distribution of tasks in the multi-agent robotic system in the elimination of emergency situations

2018 ◽  
pp. 59-68
Author(s):  
V. Ya. Vilisov
Keyword(s):  
Decentralized Control ◽  
Emergency Situation ◽  
Type Model ◽  
Optimal Distribution ◽  
Emergency Situations ◽  
Automatic Mode ◽  
Control Scheme ◽  
Multi Agent ◽  
Experienced Operator ◽  
Transport Type

An algorithm for machine learning of a transport type model is presented for the optimal distribution of tasks in a heterogeneous group of robots operating in an automatic mode without operator participation. It is assumed that the model is trained by an experienced operator in a landfill environment adequate to a real emergency situation in which robots are to perform operations. According to the configured model in a real setting, tasks can be distributed according to a supervisory or decentralized control scheme. Training can be carried out and in the process of the regular operation of robots. In this case, the use of the learning model allows you to split the configuration tuning circuits and the assignment of tasks, which enables the robots and the operator to function at their own natural pace. 

OPERATIONAL STATE OF BRIDGES OF UKRAINE

2019 ◽  
pp. 57-68
Author(s):  
Larysa Bodnar ◽  
Petro Koval ◽  
Sergii Stepanov ◽  
Liudmyla Panibratets
Keyword(s):  
Management System ◽  
The State ◽  
Operating Conditions ◽  
Bridge Management ◽  
Bridge Management System ◽  
Program Complex ◽  
Operating Condition ◽  
Software Complex ◽  
Automatic Mode ◽  
The Status

A significant part of Ukrainian bridges on public roads is operated for more than 30 years (94 %). At the same time, the traffic volume and the weight of vehicles has increased significantly. Insufficient level of bridges maintenance funding leads to the deterioration of their technical state. The ways to ensure reliable and safe operation of bridges are considered. The procedure for determining the predicted operational status of the elements and the bridge in general, which has a scientific novelty, is proposed. In the software complex, Analytical Expert Bridges Management System (AESUM), is a function that allows tracking the changes in the operational status of bridges both in Ukraine and in each region separately. The given algorithm of the procedure for determining the predicted state of the bridge using a degradation model is described using the Nassie-Schneidermann diagram. The model of the degradation of the bridge performance which is adopted in Ukraine as a normative one, and the algorithm for its adaptation to the AESUM program complex with the function to ensure the probabilistic predicted operating condition of the bridges in the automatic mode is presented. This makes it possible, even in case of unsatisfactory performance of surveys, to have the predicted lifetime of bridges at the required time. For each bridge element it is possible to determine the residual time of operation that will allow predict the state of the elements of the structure for a certain period of time in the future. Significant interest for specialists calls for the approaches to the development of orientated perspective plans for bridge inspection and monitoring of changes in the operational status of bridges for 2009-2018 in Ukraine. For the analysis of the state of the bridge economy, the information is available on the distribution of bridges by operating state related to the administrative significance of roads, by road categories and by materials of the structures. Determining the operating state of the bridge is an important condition for making the qualified decisions as regards its maintenance. The Analytical Expert Bridges Management System (AESUM) which is implemented in Ukraine, stores the data on the monitoring the status of bridges and performs the necessary procedures to maintain them in a reliable and safe operating condition. An important result of the work is the ability to determine the distribution of bridges on the public roads of Ukraine, according to operating conditions established in the program complex of AESUM, which is presented in accordance with the data of the current year. In conditions of limited funding and in case of unsatisfactory performance of surveys, it is possible to make the reasonable management decisions regarding the repair and the reconstruction of bridges. Keywords: bridge management system, operating condition, predicted operating condition, model of degradation, bridge survey plan, highway bridge.

Lifting the Veil

2014 ◽  
Vol 91 (4) ◽  
pp. 43-55
Author(s):  
Scott Pittman
Keyword(s):  
Los Angeles ◽  
State Government ◽  
The State ◽  
University Of California ◽  
Red Scare ◽  
National Archives ◽  
The Veil ◽  
Hiring And Firing ◽  
And Control ◽  
California Schools

The story of anti-communism in California schools is a tale well and often told. But few scholars have appreciated the important role played by private surveillance networks. This article examines how privately funded and run investigations shaped the state government’s pursuit of leftist educators. The previously-secret papers of Major General Ralph H. Van Deman, which were opened to researchers at the National Archives in Washington, D.C., only a few years ago, show that the general operated a private spy network out of San Diego and fed information to military, federal, and state government agencies. Moreover, he taught the state government’s chief anti-communist bureaucrat, Richard E. Combs, how to recruit informants and monitor and control subversives. The case of the suspicious death of one University of California, Los Angeles student – a student that the anti-communists claimed had been “scared to death” by the Reds – shows the extent of the collaboration between Combs and Van Deman. It further illustrates how they conspired to promote fear of communism, influence hiring and firing of University of California faculty, and punish those educators who did not support their project. Although it was rarely successful, Combs’ and Van Deman’s coordinated campaign reveals a story of public-private anticommunist collaboration in California that has been largely forgotten. Because Van Deman’s files are now finally open to researchers, Californians can gain a much more complete understanding of their state bureaucracy’s role in the Red Scare purges of California educators.

Analysis of the horizontal structure of a measurement and control geodetic network based on entropy

2013 ◽  
Vol 62 (1) ◽  
pp. 23-31 ◽  
Author(s):  
Maria Mrówczyńska
Keyword(s):  
Geodetic Network ◽  
The State ◽  
Observation System ◽  
Optimum Number ◽  
Optimum Structure ◽  
Horizontal Structure ◽  
The Difference ◽  
And Control ◽  
Measurement And Control ◽  
Horizontal Displacements

Abstract The paper attempts to determine an optimum structure of a directional measurement and control network intended for investigating horizontal displacements. For this purpose it uses the notion of entropy as a logarithmical measure of probability of the state of a particular observation system. An optimum number of observations results from the difference of the entropy of the vector of parameters ΔHX̂ (x)corresponding to one extra observation. An increment of entropy interpreted as an increment of the amount of information about the state of the system determines the adoption or rejection of another extra observation to be carried out.

THE NATIONAL EMPLOYMENT PLAN IN BULGARIA - ANALYSIS AND OPPORTUNITIES FOR CHANGE

2017 ◽  
Author(s):  
Venelin Krastev Terziev ◽  
◽  
Ivan Stefanov Ivanov ◽  
Keyword(s):  
Labour Market ◽  
Emergency Situation ◽  
Extensive Study ◽  
Financial Resource ◽  
The State

This paper is the part of an extensive study which analyzes and examines the processes on the Bulgarian market that unfold in the emergency situation resulting from the COVID-19 pandemics. The focus is on the state of the labour market before the pandemic crisis and the subsequent changes in the current national employment plan in view of the challenges of the situation caused by COVID-19. It proposes measures and supports actions for restructuring the financial resource for adaptation of the plan to the new challenge to the labour market in Bulgaria.

Sign in / Sign up

Export Citation Format

Share Document