IMPLEMENTATION OF ZONE PRINCIPLE IN THE CONTROL SYSTEM OF REGULATION AND MONITORING EQUIPMENT OF SPACECRAFT ONBOARD NETWORK

2021 ◽  
pp. 41-46
Author(s):  
И.И. Таболин ◽  
Р.Ю. Кузьменко ◽  
А.Д. Данилов
Keyword(s):  
Control System ◽  
Energy Balance ◽  
Quality Indicators ◽  
Control Signal ◽  
Power Balance ◽  
Continuous Change ◽  
Monitoring Equipment ◽  
Entire Area ◽  
Control Loops ◽  
Methods Of Synthesis

Описывается применение принципа зонного регулирования при разработке системы управления аппаратуры регулирования и контроля бортовой сети космического аппарата. Приведены краткие описания аппаратуры регулирования и контроля и входящих в её состав модулей. Приведены функциональная схема регулирования аппаратуры регулирования и контроля и график совместной работы её модулей с разбиением на зоны. Рассмотрена система управления аппаратурой регулирования и контроля. Приведены структурные схемы формирования управляющего воздействия для всех регуляторов аппаратуры регулирования и контроля. Реализация принципа зонного регулирования достигается тем, что вся область возможного изменения сигнала управления разбита на зоны работы, при этом каждому типу модулей выделена своя зона работы. Такой подход, в зависимости от баланса мощности "потребитель - источники", обеспечивает автоматическое подключение требуемых регуляторов. Данный принцип обеспечивает непрерывное изменение сигнала управления в зависимости от энергобаланса системы и параметрических возмущений. Полученную систему можно рассматривать как квазилинейную, что позволяет использовать известные линейные методы синтеза и анализа системы управления, при этом настройка контуров регулирования с заданными показателями качества осуществляется раздельно для каждого типа модулей аппаратуры регулирования и контроля The article describes the application of the zone regulation principle in the development of control system for the regulation and monitoring equipment of the spacecraft's onboard network. We present brief descriptions of the regulation and monitoring equipment and its constituent modules. We show regulation functional diagram of the regulation and monitoring equipment and collaboration of its modules graph with the division into zones. We describe the control system for the regulation and monitoring equipment. We present structural diagrams of the formation of a control action for all regulators of the regulation and monitoring equipment. Zone regulation principle implementation is achieved by the fact that the entire area of possible changes in the control signal is divided into zones of operation. Each type of module has its own zone of operation. This approach provides automatic connection of the required regulators depending on the power balance of the "consumer - sources". This principle provides a continuous change in the control signal depending on the energy balance of the system and parametric disturbances. The system can be considered as quasilinear, which makes it possible to use well-known linear methods of synthesis and analysis of control system. We carried out control loops customization with determined quality indicators separately for each type of the regulation and monitoring equipment modules.

scholarly journals КООРДИНИРУЮЩАЯ СИСТЕМА АВТОМАТИЧЕСКОГО УПРАВЛЕНИЯ ПРИВОДАМИ РОБОТА-МАНИПУЛЯТОРА

2017 ◽  
Vol 8 (4) ◽  
Author(s):  
А. А. Гурский ◽  
А. Е. Гончаренко ◽  
С. М. Дубна
Keyword(s):  
Control System ◽  
Robot Manipulator ◽  
Transition Process ◽  
Scientific Work ◽  
Control Variables ◽  
Control Loops ◽  
Methods Of Synthesis ◽  
Coordinating Control ◽  
Simulation Results ◽  
Dynamic Link

The control system providing the movement of the gripper of the robot manipulator along the predetermined trajectory is considered in this article. This control system is coordinated. The system provides a concerted change of the control variables under the dynamic modes. The review of modern achievements in corresponding field is presented. The purpose of scientific work is dynamic accuracy increase of the control system providing the movement of the gripper of the robot manipulator along the predetermined trajectory. The model of the control system providing the dynamic link of the control loops are presented in this paper. In this control system the dynamic link of the control loops is realized with the aid of the coordinating links. The designed model of the control system by drivers of the robot manipulator is required for methods of synthesis development of the coordinating complex systems. For comparative analysis we have presented the model of the program control system which has no dynamic link between the control loops. These models are realized in the MATLAB\Simulink program. The coordinating control law of the robot manipulator drives is shown in this paper. The simulation results of various control systems are presented. We have presented the schedules of transition process. They have shown the positional change of the robot gripper in time. On the basis of the simulation results we have confirmed the efficiency of the coordinating control system use for the control drivers of the robot manipulator during the rapid movement along the predetermined trajectory. We have confirmed that for improving the accuracy of the predetermined trajectory fulfillment is required to realize the parametric synthesis of control system considering the discrepancy ratio of the control variables minimization.

Analysis and Application of Power Balance in Self-Powered Sensor

2014 ◽  
Vol 1008-1009 ◽  
pp. 567-570
Author(s):  
Ya Kun Yu ◽  
Fang Ming Ruan ◽  
Yan Jun You
Keyword(s):  
Control System ◽  
Energy Balance ◽  
Wireless Sensor ◽  
Power Balance ◽  
Super Capacitor ◽  
Lighting Control ◽  
Sensor Module ◽  
Average Current ◽  
Self Powered ◽  
Modern Building

wireless sensor network (WSN) nodes based on self-powered function have distinct advantages of battery free and no needing line power, used successfully in lighting control system of modern building. Energy balance and power balance are considered in design of battery-free sensor module. Average current in self-powered wireless sensor module was evaluated based on viewpoint of power balance. Energy balance was discussed in building lighting control system based on special energy storage of super-capacitor. Self-powered wireless sensor module is based on energy harvesting from ambient circumstance. In lighting control system of modern building automation battery-free sensor module has been successfully applied for maintenance and energy saving. The application of battery-free sensor module was analyzed.

scholarly journals Robust force and displacement control of an active landing gear for vibration reduction at touchdown and during taxiing

2021 ◽  
Vol 3 (4) ◽  
Author(s):  
Mehran Pirooz ◽  
Seyed Hossein Mirmahdi ◽  
Ahmad Reza Khoogar
Keyword(s):  
Control System ◽  
Force Control ◽  
Direct Method ◽  
Landing Gear ◽  
Gear System ◽  
Displacement Control ◽  
Robust Nonlinear Control ◽  
Control Loops ◽  
Tire Force ◽  
The Mathematical Model

AbstractIn this paper, a new approach is proposed to control the dynamic response of a landing gear system subjected to runway force, both on heavy landing conditions and at the taxiing process. The mathematical model of the system is used in a way that covers nonlinear dynamics characteristics of landing gear and nonlinear/nonaffine property of the external actuator. The operation of the landing gear system and its components are described briefly. The desired control system includes two different interior loops for displacement and force control. The inner loop determines the actuator force and the outer loop performs the displacement control. A lumped uncertainty is considered in both displacement and force control loops that represent uncertainties including parametric errors, measurement noises, unmodeled dynamics, disturbance due to runway excitation, and other disturbances. The direct method of Lyapunov is utilized for asymptotic stability analysis of the robust nonlinear control system (RNCS). This system is simulated in MATLAB software and the performance of the proposed controller is analyzed exactly. Besides, the results are compared with a passive system and conventional PID control. The comparison indicates that RNCS works better and more precisely. This method can reduce vibrations at touchdown and taxiing and effectively overcome uncertainty and provide well aircraft handling by decreasing the changes in tire force.

scholarly journals Electromagnetic Energy Balance Equations and Poynting Theorem

2020 ◽  
Author(s):  
gaobiao xiao
Keyword(s):  
Energy Balance ◽  
Flux Density ◽  
Poynting Vector ◽  
Power Balance ◽  
Time Varying ◽  
Balance Equations ◽  
Power Flux ◽  
Modified Method ◽  
Electromagnetic Power ◽  
Poynting Theorem

<p>Poynting theorem plays a very important role in analyzing electromagnetic phenomena. The electromagnetic power flux density is usually expressed with the Poynting vector. However, since Poynting theorem basically focuses on the power balance in a system, it is not so convenient in some situations to use it for evaluating the electromagnetic energies. The energy balance issue for time varying fields is revisited in this paper, and a set of energy balance equations are introduced, and a modified method for evaluating power flux is proposed.</p>

EFFICIENT CONTROL OF FUNCTIONING OF ELECTRICAL GAS PREPARATION COMPLEX TO TRANSPORTATION BY MAIN PIPELINE

2021 ◽  
Vol 11 (2) ◽  
pp. 162-170
Author(s):  
Aleksandr I. DANILUSHKIN ◽  
Vasiliy A. DANILUSHKIN
Keyword(s):  
Control System ◽  
Heat Exchanger ◽  
Gas Pipeline ◽  
Control Algorithms ◽  
Pipeline System ◽  
Continuous Change ◽  
Operating Modes ◽  
Cooling Unit ◽  
Gas Cooling ◽  
Main Gas Pipeline

The article discusses the problem of increasing the effi ciency of the linear section of the main gas pipeline system by developing eff ective control algorithms for the operating modes of the gas cooling unit. To develop control algorithms for a gas cooling unit, adapted mathematical models of thermal processes in air-cooled gas devices and in a gas pipeline are used. It is shown that when considering the dynamic modes, the gas pipeline system can be represented as consisting of two dynamic links. The link “gas cooling unit”, which includes up to 24 electric drives with heat exchangers, is characterized by relatively short time constants. In the main gas pipeline, heat exchange processes proceed much more slowly. This circumstance allows the main att ention to be focused on the development of an eff ective control system for the cooling plant. The control is carried out by discrete or continuous change in the fl ow rate of the cooling air through the heat exchanger by adjusting the number of switched on air coolers and changing the fan speed. The search for control algorithms for air coolers is carried out by formulating and solving the problem of minimizing the root-mean-square deviation of the gas temperature at the outlet from the heat exchanger from the required value. To implement the obtained control algorithms, a functional diagram of the automatic control system for the operating modes of the gas cooling unit has been developed.

Digitalization of the Development of the Fuel and Energy Balance of Russia's Northern Territories

2020 ◽  
pp. 325-348
Author(s):  
Izabella Elyakova ◽  
Aleksandr Elyakov
Keyword(s):  
Control System ◽  
Energy Balance ◽  
Energy Budget ◽  
Digital Technologies ◽  
Research Practice ◽  
Production And Consumption ◽  
Entire Complex ◽  
The Republic ◽  
Northern Territories ◽  
Implementation Management

The urgency of the energy budget research practice in the Republic of Sakha (Yakutia) on settlements with software for effective formation, implementation, management, monitoring, analysis, evaluation, rapid response, and strategic management of the entire complex of the energy budget is substantiated. The chapter reveals the lack of problems of unified methodology for the development of the energy budget and the use of different fundamentals of its preparation. The necessity of using digital technologies to develop a control system for a complex network of production and consumption of fuel and energy resources is rationalized.

State Feedback Linearization of a Non-linear Permanent Magnet Synchronous Motor Drive

2016 ◽  
Vol 1 (3) ◽  
pp. 534 ◽  
Author(s):  
Pilla Ramana ◽  
Karlapudy Alice Mary ◽  
Munagala Surya Kalavathi
Keyword(s):  
Control System ◽  
Feedback Linearization ◽  
State Feedback ◽  
Permanent Magnet Synchronous Motor ◽  
Pi Controller ◽  
State Feedback Control ◽  
Pole Placement ◽  
Motor Speed ◽  
Control Loops ◽  
Non Linear

Control system design for inverter fed drives previously used the classical transfer function approach for single-input singleoutput (SISO) systems. Proportional plus Integral (PI) controllers were designed for individual control loops.It is found that the transient response of a PI controller is slow and is improved by pole placement through state feedback. However, the effective gains of the PI controller are substantially decreased as a function of the increase of motor speed. A control system is generally characterized by the hierarchy of the control loops, where the outer loop controls the inner loops. The inner loops are designed to execute progressively faster. The speed controller (PI controller) processes the speed error and generates the reference torque. In the inner loop, firstly a non-linear controller is designed for the system by which the system nonlinearity is canceled using state or exact feedback linearization. In addition, a linear state feedback control law based on pole placement technique including the integral of output error (IOE) is used in order to achieve zero steady state error with respect to reference current specification, while at the same time improving the dynamic response.The proposed scheme has been validated through extensive simulation using MATLAB.

scholarly journals The automation control system of intelligent flexible clearing robot

2020 ◽  
Vol 17 (3) ◽  
pp. 172988142092563
Author(s):  
Jing Fan
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Human Machine Interface ◽  
Numerical Control ◽  
Experimental Simulation ◽  
Social Significance ◽  
Entire Area ◽  
Interactive Control ◽  
Cleaning Robot ◽  
Machine Interface

The cleaning of cement warehouse is a labor-intensive and high-risk operation. The applicability and cleaning effect of traditional work tools are poor. Therefore, most of the methods are manual cleaning, which is inefficient and prone to accidents. It is of great social significance and practical value to develop an intelligent flexible warehouse cleaning robot that replaces the manual cleaning of cement. When the top of the cement warehouse is small and the volume of the cement warehouse is very large, how to ensure that the working range of the cleaning system can cover the entire area, and effectively and quickly complete the cleaning operation, and the automatic control of the cleaning robot has become an automatic control. Key issues to be addressed. Although the human–machine interface configuration technology has been widely used in automated monitoring systems, its graphical and componentized interface construction methods and the flexibility and scalability of the configuration interface have been widely recognized, but the human–machine interface, the coding method is still used in the construction, the development efficiency is low, and the interface is not open and flexible enough. At the same time, there are few research attempts on interface configuration. Interface configuration mostly only stays in the graphical phase of interface construction. Data and interactive control cannot meet the configuration requirements, and there is no complete implementation plan for configuration. Therefore, it has become an urgent need to change the traditional interface development mode and realize the configuration of man–machine interface. Based on the above background, the research content of this article is the research on the automatic control system of intelligent flexible clearing robot. Based on the understanding of the relevant properties of cement powder, this article discusses its flow state in the cement storehouse theoretically and provides a basis for subsequent structural design and stability research. A modularized and component-based configuration method for the numerical control interface is proposed. The interface is divided into three modules: data, graphics, and interactive control. The functional modules are assembled and the components are combined to implement the interface configuration. The experimental simulation results in this article show that compared to the traditional method, the amount of code editing of the configured human–machine interface is reduced by 46.34%, the development cycle is shortened by 43.72%, and the development efficiency of the configured human–machine interface has been greatly improved. It is confirmed that the configuration technology studied in this article can meet the requirements of automatic control systems.

scholarly journals LabVIEW based measurements and control system of a micro-ORC installation with Scroll Expander

2018 ◽  
Vol 70 ◽  
pp. 01003
Author(s):  
Albrecht Eicke ◽  
Sławomir Smolen
Keyword(s):  
Control System ◽  
Data Acquisition ◽  
Thermodynamic Cycle ◽  
Simple Calculation ◽  
Working Fluid ◽  
Thermodynamic Evaluation ◽  
Control Loops ◽  
Characteristic Points ◽  
Matching Procedure ◽  
And Control

An innovative ORC-installation with a scroll engine as expansion device has been developed and designed at the City University of Applied Sciences in Bremen. This new transportable installation has the specific capability to be connected to an alternative power source, such as solar power. Pentafluoropropane (R245fa) has been selected as the working fluid because it is suitable for the required temperature ranges and exhibits some additional advantages related to this specific application. The details of the ORC-Cycle have been presented in another paper and are not the main topic of the presented work. The core matter of this paper is the measurement and control system of the installation, which enables the thermodynamic evaluation of the obtained experimental data, some back coupling, and control tasks. The data acquisition and matching procedure, connected with the operational measurement system, identifies the aggregate and operational states of working fluid in characteristic points of the thermodynamic cycle. The algorithm for searching for the points from the table of parameters take so much time, that the control loop cannot work correctly in time. This problem was solved with the producer-consumer architecture in LabVIEW. Data acquisition and quick response in the control loops are done in the producer-while loop. To reduce the number of values, data are written only every five seconds in a queue. From this queue the consumer-while loop reads values, if the computer has enough capacity. This technique ensures that no data are lost. The matching procedure searches in the parameter file for the thermal properties and displays the cycle in a T-s diagram. Some simple calculation procedures make it possible to evaluate the thermal efficiency and other cycle parameters while operating. At the end of this sequence, the data are saved in a file. In the next step, the producer-loop is executed directly in a Field Programmable Gate Array, so that the control can be executed stand-alone and the computer is only used for visualization.

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