Applications of Control Systems in Power Supply Devices

1995 ◽  
pp. 144-175
Author(s):  
Hans Gumhalter
Keyword(s):  
Control Systems ◽  
Power Supply

scholarly journals TECHNOLOGY OF OPERATION OF CITY ELECTRICAL SYSTEMS WITH TRACTION LOADS BASED ON ENERGY AND RESOURCES SAVING

2020 ◽  
Vol 1 (154) ◽  
pp. 16-27
Author(s):  
М. Khvorost ◽  
I. Domanskiy ◽  
V. Vasenko
Keyword(s):  
Life Cycle ◽  
Expert System ◽  
Control Systems ◽  
Power Supply ◽  
Quality Criteria ◽  
Resource Conservation ◽  
The State ◽  
Contact Network ◽  
Electric Transport ◽  
Analytical Centers

The scientifically substantiated principles of development of technology of operation of electric systems with traction loads by condition and minimum expenses during their life cycle for urban electric transport are developed. Saving quality criteria that determine resource conservation are generalized. It is proposed to expand the functions of tram wagon laboratories to measure the basic quality criteria. The scheme of expert system for analysis of the state of power supply devices and development of control effects in the analytical centers of control systems is developed. The scientifically grounded principles of the development of the technology of operation of electric systems with traction loads on the state and minimum expenses in the course of their life cycle, in particular the concept of maintenance of power supply devices on the basis of their diagnostics and monitoring, a complex automated system of diagnostics of the contact network and current collectors, means of improving quality scratching and reducing the wear of the contact wire, which collectively solves the problem of resource conservation and allows reducing operating costs 1.5–2 times. Generalized current quality criteria that determine resource conservation. It is established and experimentally confirmed that the basic criteria for the state of the contact network are contact pressing and the coefficients of reliability and economy of current flow. It is proposed to expand the functions in the field of measuring the basic criteria for servicing the contact network by state. The information technologies of an estimation of a condition of power supply devices during their operation on the basis of synthesis of two sources of information are offered: real-time diagnostics and simulation modeling. A generalized scheme of the expert system for analysis of the status of power supply devices and development of control effects in the analytical centers of control systems has been developed. Keywords: electric transport, traction substations, traction networks, diagnostics and operation, technologies, energy efficiency, resource saving.

Force Controlled Electrical Pulse Assisted Forming

2020 ◽  
Author(s):  
Tyler J. Grimm ◽  
Amit B. Deshpande ◽  
Laine Mears ◽  
Jianxun Hu
Keyword(s):  
Control Systems ◽  
Stress Level ◽  
Stress Reduction ◽  
Power Supply ◽  
Electrical Current ◽  
Strain Rates ◽  
Control Approach ◽  
Electrically Assisted ◽  
Minimum Stress ◽  
Electrically Assisted Manufacturing

Abstract Electrically-assisted manufacturing refers to the direct application of electrical current to a workpiece during a manufacturing process. This assistance results in several benefits such as flow stress reduction, increased elongation, reduced springback, increased diffusion, and increased precipitation control. These effects are also associated with traditional thermal assistance. However, for over half a decade it has been argued whether or not these observed effects are due to electroplasticity, a term which describes effects that cannot be fully explained through resistive heating. Several theories have been proposed as to the mechanism responsible for these purported athermal effects. Conflicting results within literature have enabled this debate over electroplasticity since its discovery in the mid 20th century. While the effects of electrically-assisted manufacturing are clearly characterized throughout literature, there is a lack of research related to control systems which may be used to take advantage of its effects. Typically, control systems are developed using an empirical approach, requiring extensive testing in order to fully characterize the stress-strain behavior at all conditions. Additionally, current research has primarily focused on reducing flow stresses during electrically-assisted processes without regard for the strength of the material subsequent to forming. Therefore, there is a strong need for a control system which can quickly be deployed for new materials and does not significantly reduce the subsequent strength of the material. Herein, a novel control approach is developed in which electrical pulses are triggered by a predetermined stress level. This stress value would be set according to the manufacturer’s stamping die strength. Once the material reaches this stress value, current is deployed until a minimum stress level is reached. At that point, the electricity is turned off and the material allowed to cool; at that stage the stress begins to elevate and the cycle continues. This approach does not require extensive pre-testing and is robust to a range of strain rate. This type of implementation can also be adapted to different levels of capability. For example, since the current is controlled by force and not by time, a low-current power supply will stay on for each pulse longer than a power supply with higher capabilities; however, each will achieve a similar effect. This study investigates the effect of several different minimum stress levels and strain rates. The strain rates chosen are relatively similar to common stamping process. This system was experimentally tested using 1018 CR steel. This control approach was found to be a successful method of maintaining a desired stress level.

Vibration Control Using Semi-Active Force Generators

1974 ◽  
Vol 96 (2) ◽  
pp. 619-626 ◽  
Author(s):  
D. Karnopp ◽  
M. J. Crosby ◽  
R. A. Harwood
Keyword(s):  
Vibration Control ◽  
Control Systems ◽  
Power Supply ◽  
Active Vibration Control ◽  
Simulation Studies ◽  
Active Force ◽  
Passive Vibration Control ◽  
Active Vibration ◽  
Computer Simulation Studies ◽  
Force Generator

A type of force generator which can respond to general feedback signals from a vibrating system in order to control the vibration but which does not require the power supply of a servomechanism is described. Computer simulation studies show that performance comparable to that of fully active vibration control systems can be achieved with the semi-active type of device. Physical embodiments of the concept are discussed and compared to hardware used in active and passive vibration control systems.

scholarly journals BOOSTR: A Dataset for Accelerator Control Systems

Data ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 42
Author(s):  
Diana Kafkes ◽  
Jason St. John
Keyword(s):  
Artificial Intelligence ◽  
Time Series ◽  
Reinforcement Learning ◽  
Control Systems ◽  
Power Supply ◽  
Cycle Time ◽  
Rapid Cycling ◽  
Operation Optimization ◽  
Advanced Control ◽  
Rapid Cycling Synchrotron

The Booster Operation Optimization Sequential Time-series for Regression (BOOSTR) dataset was created to provide a cycle-by-cycle time series of readings and settings from instruments and controllable devices of the Booster, Fermilab’s Rapid-Cycling Synchrotron (RCS) operating at 15 Hz. BOOSTR provides a time series from 55 device readings and settings that pertain most directly to the high-precision regulation of the Booster’s gradient magnet power supply (GMPS). To our knowledge, this is one of the first well-documented datasets of accelerator device parameters made publicly available. We are releasing it in the hopes that it can be used to demonstrate aspects of artificial intelligence for advanced control systems, such as reinforcement learning and autonomous anomaly detection.

scholarly journals Mobile Platform for Car Service

2021 ◽  
Vol 24 (1) ◽  
pp. 64
Author(s):  
M. N. Abdelhamed ◽  
A. V. Shchenyatsky
Keyword(s):  
Control System ◽  
Remote Control ◽  
Control Systems ◽  
Power Supply ◽  
Carrying Capacity ◽  
Mobile Application ◽  
3D Models ◽  
Mobile Platform ◽  
Ground Clearance ◽  
Design Solutions

The analysis of the use of drives of mobile and transport robots is given. Various options for design solutions are considered, including the main selected drive of a mobile platform with four Omni-wheels, ensuring maximum mobility and maneuverability. Masses and ground clearance of vehicles of various classes are estimated to determine the overall dimensions of the mobile platform in terms of height and carrying capacity. It has been established that the necessary elements of a mobile platform are universal mounting plates and trailed equipment.The control systems of two variants have been developed. The first is automatic, for an autonomous mobile platform, and the second is for remote control. Control systems include 3 microcontrollers, 5 drivers, 6 motors, 4 sensors. The position of the mobile platform can be controlled by the operator remotely using a mobile application. Power supply of the MP is carried out from its own battery, from the car network or an external network. An algorithm for the operation of the control system for different versions is proposed. 3D models of the mobile platform and suspension unit models have been developed. Calculations of the lifting mechanism of the MP are given. The layout of the nodes of the mobile platform is presented.

scholarly journals ПЕРСПЕКТИВИ РОЗВИТКУ ЕЛЕКТРОННИХ САУ ГТД

2018 ◽  
pp. 95-100
Author(s):  
Геннадий Степанович Ранченко ◽  
Анна Григорьевна Буряченко
Keyword(s):  
Mathematical Model ◽  
Automatic Control ◽  
Control Systems ◽  
Power Supply ◽  
Aviation Industry ◽  
Wireless Technologies ◽  
Central Institute ◽  
Automatic Control Systems ◽  
Aero Engine ◽  
Engine Type

The analysis of the basic directions of electronic automatic control systems for aviation gas-turbine engines (FADEC) development is presented. This analysis is executed on the base of materials of the Scientific and Technical Congress of Aero-Engine Manufacturers. This Congress passed within the limits of the International engine forum in April 2018 in Moscow under aegis of the International association «Association of Aero-Engine Manufacturers» (ASSAD). The review of a modern condition of developing works of the specialized scientific enterprises in the field of application of onboard mathematical model «virtual engine» and introductions of wireless technologies in the aviation industry is given. It is noted, that design offices of manufacturers introduce as perspective decisions the modular unitized design for electronic automatic control systems and the “vibration passport” for engine type. The using of onboard mathematical model «virtual engine» provide the electronic automatic control systems with the possibility to apply the new controlling concepts and to compensate the failures of transducers which have information interchange with the automatic control system. The software «virtual engine» is developed by scientists of Central Institute of Aviation Motors (Moscow) and of Ukrainian National Aerospace University (Kharkov). The wireless technologies need the specialized power supply devices for wireless engines transducers. There is the tendency to use the engine energy (thermal engine energy, vibration engine energy) for such a power supply devices which is to be built on the base of thermoelectric generators, vibration generators and magnetic induction generators. The investigation of engine vibration characteristics in order to form the “vibration passport” for engine type is described. This passport is to be used for engine diagnostic during exploitation. There is described the method of electronic automatic control systems reliability confirmation by comparison with the prototypes (analogs) which is proposed by scientists of Central Institute of Aviation Motors.

scholarly journals Analysis of methods to optimize control systems for power supply of marine vessels using fuzzy logic and fractal analysis

2021 ◽  
Vol 2061 (1) ◽  
pp. 012088
Author(s):  
E V Khekert ◽  
A I Epikhin
Keyword(s):  
Time Series ◽  
Fuzzy Logic ◽  
Control Systems ◽  
Fractal Analysis ◽  
Power Supply ◽  
Effective Control ◽  
Air Cooling ◽  
Short Term ◽  
Depth Analysis ◽  
Marine Vessels

Abstract The paper considers the features of promising methods to optimize the control systems for power supply of marine vessels using fuzzy logic and fractal analysis. In order to design an effective control contour for the power supply system (PSS), it is proposed to use synergistic mechantronic systems based on intelligent technologies with fundamentally new properties that allow for a more effective solution of control problems using fractal analysis of time series to increase the adequacy of forecasting through in-depth analysis of the causes of emergency situations. The synergistic effect SE of the control within such systems is a set of effects obtained as a result of their combination and synchronization in time and space. Practical aspects of fractal analysis are considered on the example of a two-cycle engine with supercharging and air cooling. In the study of fractal processes, a method is proposed for identifying and eliminating the short-term dependence of the value of the time series of the process S(t), which is characteristic of autoregressive processes, using regression with respect to S(t-1) and conducting the R/S analysis of the remainder X(t). Short-term dependence is eliminated provided that long-term dependence is maintained. Autoregressive AR(1) differences are analyzed at a certain time interval for various engine operating modes. The results of the R/S analysis of the engine operation and the determination of the Hurst exponent are used to increase the efficiency of forecasting and control of the PSS in the period of the detected chaotic behavior of the time series.

Ensuring the sustainability of the operation of power facilities based on the protection of digital control systems

2021 ◽  
Vol 93 ◽  
pp. 172-182
Author(s):  
E. P. Grabchak ◽  
◽  
E. L. Loginov ◽  
Keyword(s):  
Control Systems ◽  
Power Supply ◽  
Digital Control ◽  
Abnormal Behavior ◽  
Critical Information ◽  
Emergency Situations ◽  
Digital Control Systems ◽  
Safety Research ◽  
Functional Units ◽  
The Stability

Introduction. The expansion of the range of threats of critical information impacts (attacks), all of which are difficult to foresee in the design and development of digital control systems, has actualized the development of new approaches, the use of which makes it possible to detect attacks, identify them and develop control commands to stabilize equipment operation, increase the resilience of energy facilities to critical information impacts (attacks). The purpose of the study is to solve the problem of protection against unauthorized interference in the operation of automatic and automated systems that control functional units of power equipment to achieve reliability and safety of power supply as an element of ensuring technosphere safety. Research methods. Within the framework of the study, general scientific and special methods of scientific knowledge were used, including analysis, synthesis, generalization, which were based on the main provisions and patterns of behavior of systems and information theory. Research results. It is proposed to create a system for monitoring the stability of energy facilities to critical information impacts (attacks), adapted to work in emergency situations and in a special period. The characteristics of the system, the main functions, components, key modules (subsystems), the main stages of development, implementation and ensuring the efficiency of work are formulated. Conclusion. The advantage of the system is its adaptation to abnormal behavior (including for unknown reasons) of functional units of equipment in order to achieve reliability and safety of power supply as an element of ensuring technospheric safety. The system allows you to reduce the workload and responsibility of operators, especially in situations where there is no, lack of reliable information or the presence of questionable technological information. Keywords: energy, digital control systems, threats, protection, security, intelligent elements, equipment

Information protection to prevent failures of elements of automated information and control systems of power facilities

2021 ◽  
Vol 94 ◽  
pp. 144-155
Author(s):  
E. P. Grabchak ◽  
◽  
E. L. Loginov ◽  
Keyword(s):  
Information Security ◽  
Control Systems ◽  
Power Supply ◽  
Information Exchange ◽  
Control Process ◽  
Reference Sequence ◽  
Security Threats ◽  
Power Equipment ◽  
Intelligent Methods ◽  
And Control

Introduction. One of the most important tasks in achieving reliability and safety of power supply as an element of ensuring technospheric security is the modernization of automated information and control systems for the transmitting and receiving sides, which ensures resistance against known types of attacks. The aim of the study is to solve the problem of secure information exchange within the framework of automated information and control systems, taking into account the low security of technological communication channels of power facilities to achieve the reliability and safety of power supply as an element of ensuring technospheric security based on the development of intelligent methods for detecting dangerous influences and intrusions to neutralize information security threats in relation to commands to control power equipment. Research methods. Within the framework of the study, general scientific and special methods of scientific knowledge were used, including analysis, synthesis, generalization, which were based on the main provisions and patterns of behavior of systems and information theory. Research results. It is proposed to create innovative algorithms for controlling power equipment, built on the basis of libraries of reference commands and reference sequences of commands used to replace commands intentionally or accidentally distorted by erroneous bits, as well as diagnosing vulnerabilities of information and control systems to ensure the correctness of the process of controlling power equipment. Conclusion. The listed technologies will make it possible to create a new class of efficient algorithms for power equipment control, built on the basis of intelligent methods for detecting dangerous influences and intrusions to neutralize information security threats in relation to control commands based on the analysis of high-level behavioral characteristics of the protected information and control system with the function of controlling the transition of the controlled system to the next a condition that depends on the exact correspondence of the generated commands to the reference commands and the reference sequence of commands, which will ensure the correctness of the control process of power equipment. Key words: energy, information and control networks, reliability, security, power supply, algorithms, monitoring, protection, information.

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