scholarly journals Synthesis and modeling of the multidimensional technological object control system on the state regulator basis

Vestnik IGEU ◽  
2020 ◽  
pp. 57-64
Author(s):  
A.N. Labutin ◽  
Yu.N. Zagarinskaya ◽  
V.Yu. Nevinitsyn ◽  
G.V. Volkova ◽  
V.A. Zaitsev
Keyword(s):  
Computer Simulation ◽  
Control System ◽  
Automatic Control ◽  
Control Systems ◽  
State Vector ◽  
Chemical Reactor ◽  
The State ◽  
Static Error ◽  
Integral Component ◽  
State Regulator

The problem of structural-parametric synthesis of automatic control systems (ACS) of technological objects is deter-mined by the multi-dimensionality, multi-connectedness and nonlinearity of their mathematical models. Despite the indicated properties of such objects, traditional linear systems based on PID-algorithms are still used for process control. Since the synthesis of linear systems using input-output models does not take into account the multi-dimensionality and mutual influence of state coordinates, such systems increase the influence of parametric and signal perturbations on the quality of control processes. The increasing requirements for the quality and efficiency of technological processes control made it expedient to apply the control principle by the state vector based on the use of uninertial state regulators or combined state regulators including flexible feedback on the derivative state coordinates or state coordinate integrals. The research uses methods of system analysis of technological processes as control objects, methods of automatic control theory, methods of control systems synthesis on the state regulators basis, meth-ods of computer simulation. The linearized mathematical model of liquid-phase chemical reactor in the state space has been obtained. It has been established that the investigated object has the property of free movement stability and it is fully controlled in the state space. The problem of synthesis of a single-channel concentration vector control system in a chemical reactor using state regulator has been solved. The parameters of state regulator settings have been determined using the method of modal control. The efficiency of the automatic control system on the basis of the state regulator with an integral component has been shown using the method of computer simulation of the ‘nonlinear object – linear control subsystem’ complex. It has been demonstrated that the absence of an integral component in the control algorithm structure leads to a great static error of regulation. To eliminate the static error of control and ensure the robustness of the control system, it is recommended to introduce an integral component into the structure of state controller. This ensures the efficiency of the control system both for the case of complete measurement of the state vector and for the case of measurement of the output controlled variable only.

scholarly journals SYNTHESIS AND ANALYSIS OF THE CONCENTRATION CONTROL SYSTEM IN THE CHEMICAL REACTOR ON THE BASIS OF THE STATE CONTROLLER

2019 ◽  
Vol 2019 (4) ◽  
pp. 4-11
Author(s):  
Aleksandr Labutin ◽  
Yuliya Zagarinskaya ◽  
Vladimir Nevinitsyn ◽  
Galina Volkova
Keyword(s):  
Control System ◽  
Control Method ◽  
Chemical Reactor ◽  
The State ◽  
Modal Control ◽  
Control Error ◽  
Integral Component ◽  
State Controller

The paper deals with the synthesis of a singlechannel control system of concentration vector in a liquidphase chemical reactor using a state controller. Settings of the state controller are determined using the modal control method. An integral component was introduced into the structure of the state controller to eliminate the static control error and ensure the robustness of the control system.

The Research on Multi-Axes Automatic Motion Control Systems

2012 ◽  
Vol 459 ◽  
pp. 75-78
Author(s):  
Lian Jun Hu ◽  
Xiao Hui Zeng ◽  
Gui Xu Chen ◽  
Hong Song
Keyword(s):  
Control System ◽  
Embedded Systems ◽  
Automatic Control ◽  
Control Systems ◽  
Motion Control ◽  
Automatic Control System ◽  
Experimental Results

An automatic control system for multi-axes motions based on multi-CPU embedded systems is proposed in the paper, in order to overcome insufficiencies of available multi-axes automatic dispensing control systems. It is shown from experimental results that expected control objectives for multi-axes motions are achieved.

scholarly journals A Control Approach Based on Observers of State and Uncertainty for a Class of Takagi–Sugeno Fuzzy Models

2021 ◽  
Vol 25 (3) ◽  
pp. 317-325
Author(s):  
Jun Zhao ◽  
Hugang Han ◽  
◽  
Keyword(s):  
Control System ◽  
Control Systems ◽  
Fuzzy Model ◽  
State Observer ◽  
The State ◽  
State Information ◽  
Control Approach ◽  
Fuzzy Models ◽  
Takagi Sugeno ◽  
Stable Control

Although the Takagi–Sugeno fuzzy model is effective for representing the dynamics of a plant to be controlled, two main questions arise when using it just as other models: 1) how to deal with the gap, which is referred to as uncertainty in this study, between the model and the concerned plant, and how to estimate the state information when it cannot be obtained directly, especially with the existence of uncertainty; 2) how to design a controller that guarantees a stable control system where only the estimated state is available and an uncertainty exists. While the existing studies cannot effectively observe the state and the resulting control systems can only be managed to be uniformly stable, this study first presents a state observer capable of precisely estimating the state regardless of the existence of uncertainty. Then, based on the state observer, an uncertainty observer is derived, which can track the trajectory of uncertainty whenever it occurs in a real system. Finally, a controller based on both observers is presented, which guarantees the asymptotic stability of the resulting control system.

The use of models with improved characteristics in the missile control system

2020 ◽  
Keyword(s):  
Control System ◽  
Control Systems ◽  
A Priori ◽  
The State ◽  
State Variables ◽  
Control Loop ◽  
Fundamental Diagram ◽  
Management Efficiency ◽  
Control Matrix ◽  
Improved Characteristics

A fundamental diagram of a control system for missiles of various classes is investigated. A functional diagram of a control system with an intelligent component for long-range aerodynamic rockets returning to the atmosphere is developed. It is proposed to use in the control loop an ensemble of a priori missile models and models of external influences. It is proposed to improve the accuracy of control systems with an intelligent component by increasing the degree of controllability of the state variables for a priori models. The most convenient numerical criterion of controllability degree for of the state variables of the models is presented. The results of mathematical modeling showed a slight increase in the efficiency of missile control with an increase in the degree of controllability of the pitch angle by changing the coefficients of the control matrix. Keywords rocket; control system; intelligent component; an action acceptor; a priori model; controllability; degree of controllability; management efficiency

Smart Combustors: Just Around the Corner

2005 ◽  
Author(s):  
Ben T. Zinn
Keyword(s):  
Control System ◽  
Control Systems ◽  
Gas Turbine ◽  
Active Control ◽  
Health Monitoring ◽  
State Of The Art ◽  
The State ◽  
Research Needs ◽  
Combustion Instabilities ◽  
Lean Blowout

This paper reviews the state of the art of active control systems (ACS) for gas turbine combustors. Specifically, it discusses the manner in which ACS can improve the performance of combustors, the architecture of such ACS, and the designs and promising performance of ACS that have been developed to control combustion instabilities, lean blowout and pattern factor. The paper closes with a discussion of research needs, with emphasis on the integration of utilized engine ACS, health monitoring and prognostication systems into a single control system that could survive in the harsh combustor environment.

Synthesis of Control Systems with Sign-To-Effect Compensating Feedback in Conditions of Limited Uncertainty

2020 ◽  
Vol 63 (5) ◽  
pp. 40-45
Author(s):  
Vladimir Elsukov ◽  
◽  
Vjacheslav Lachin ◽  
Vladimir Pavlov ◽  
◽  
...  
Keyword(s):  
Automatic Control ◽  
Control Systems ◽  
State Vector ◽  
Structural Synthesis ◽  
Parametric Synthesis ◽  
Synthesis Algorithm ◽  
Automatic Control Systems ◽  
System A ◽  
Linearized System ◽  
Integral Feedback

The algorithm of structural and parametric synthesis of automatic control systems for limitedly uncertain non-linear objects with unstable balance status and right own values in their exit matrix is proposed. The pecu-liarity of the structural synthesis algorithm is that synthesized automatic control systems use differential com-pensating connection with two components. The signal of one of them is proportional to the signal of disa-greement between the required and measured values of the state vector of the system. A signal of another com-ponent is formed by the sign-operated integral feedback on the module of the control influence. The algorithm of parametric synthesis is reduced to solving the problem at a conditional minimum of integral regulatory error when limiting the characteristic frequency multi-member module to an algorithmically linearized system.

METHOD ENSURING ACCESS TO INFORMATION TECHNOLOGICAL RESOURCES OF AUTOMATIC CONTROL SYSTEM BY WATER SUPPLY COMPANY

2016 ◽  
Vol 2016 (2) ◽  
pp. 167-174
Author(s):  
Михаил Рытов ◽  
Mikhail Rytov ◽  
Сергей Шпичак ◽  
Sergey Shpichak
Keyword(s):  
Control System ◽  
Water Supply ◽  
Automatic Control ◽  
Control Systems ◽  
Communication Channels ◽  
Access To Information ◽  
Access Policy ◽  
Automatic Control Systems ◽  
Water Supply Company ◽  
Blom's Scheme

The problems of access control to information and technological resources of automatic control systems for water supply companies are considered. The formalized model of the process of reliable access to information and technological resources is shown. The model takes into account the existence of a multitude of communication channels and a possibility of the organization of the operative cross access. A method to ensure a reliable access to information and technical resources of automatic control systems by water supply companies on the basis of the access policy combination, a scheme of deposit and a preliminary distribution of access authenticators. As a base example there was adopted Blom’s scheme. The method allows ensuring an operative cross access in case of emergency. To ensure an operative access in the method mentioned there was used a scheme of a complete division of a secret in the combination with authenticator evolution. As a basic example the evolution of authenticators based on Lamport’s protocol is considered.

scholarly journals Synthesis of Boiler Controllers of the Automatic Power Control System of Power Units

2020 ◽  
Vol 63 (3) ◽  
pp. 223-235
Author(s):  
G. T. Kulakov ◽  
K. I. Artsiomenka
Keyword(s):  
Control System ◽  
Power Control ◽  
Automatic Control ◽  
Control Systems ◽  
Fuel Consumption ◽  
Power Unit ◽  
Power Controller ◽  
Automatic Control Systems ◽  
Automatic Power Control

The article concerns the problem of structure-and-parametric optimization of a cascade automatic control system (CACS) by an example of a boiler power controller and a fuel controller. This CACS, which is a part of automatic control systems for power units, consists of two loops, viz. of an inner loop (which purpose is stabilization of the system) and an outer loop (designed for the adjustment) and, also, of two controller, viz. an outer controller (which is a basic one) provided for stabilization of the output value of the object (in our case, of the actual power unit capacity) and of an inner controller (which is an auxiliary one) provided to regulate fuel consumption. The internal controller builds up the control action with the aid of the boiler load controller of the power unit. As compared to single-loop automatic control systems, the cascade  system provides better quality of transient control due to the higher performance of the internal loop of the system. This advantage is especially noticeable when compensating for disturbances that come through the channel of regulating impact. The article presents two methods of setting, viz. the fuel controller and the boiler power controller. The application of these methods can improve the quality of power control and reduce fuel consumption in transient modes in comparison with the setting of these controllers of a typical power unit automatic power control system. The results of computer simulation of transient processes in CACS for input step surge and internal perturbation confirm the advantages of the methods are presented in this article.

SURVEY AND ADJUSTMENT OF CONTROLLER OF A GRAPH-ANALYTICAL METHOD TO A SECOND ORDER OBJECT

2020 ◽  
Vol 70 (2) ◽  
Author(s):  
Boris Grasiani
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Control Systems ◽  
Quality Indicators ◽  
Automatic Control System ◽  
Complex Plane ◽  
Analytical Method ◽  
Second Order ◽  
Location Of Zeros ◽  
Zeros And Poles

This paper proposes to adjust the controller using a graph-analytical method in the complex plane. The various configurations regarding the location of zeros and poles to those of the object are also considered. Adjusted controllers are surveyed, such as they are integrated into control systems, and some of the quality indicators of an automatic control system are analyzed.

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