ANALYTICAL FEASIBILITY STUDY OF THE AUTOMATIC CONTROL SYSTEM OF TILLAGE DEPTH

2021 ◽  
pp. 19-23
Author(s):  
ALEKSEI S. DOROKHOV ◽  
◽  
ALEKSEI V. SIBIRYOV ◽  
ALEKSANDR G. AKSENOV ◽  
MAKSIM A. MOSYAKOV ◽  
...  
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Control Algorithm ◽  
Control Object ◽  
Soil Cultivation ◽  
Design Scheme ◽  
Basic Set ◽  
Tillage Depth ◽  
Positional Control

The authors have carried out analytical studies on the development and rationalization of a system for automatic controlling the depth of tillage, a block diagram and an algorithm for a linear positional control system, as well as off ered a design scheme to develop a control algorithm. A mathematical model describing the control object that regulates the tillage depth has been determined, provided that the motion trajectory of the moving parts of the driving links and the actuator rods of the automatic system controlling the tillage depth is perfectly traced. A structural diagram of a linear system of positional control of the soil tillage depth has been developed, which is a mechanism for adjusting the support wheel with an acting disturbance on the control object, changing the distance between the O axis of the wheel rotation of the tillage machine power tool and the rotation axis of the support wheels of a soil cultivation machine. A design scheme to develop a control algorithm for changing the tillage depth has been obtained. To determine the required accuracy and modes of using hardware in various phase states of the soil layer, a basic set of hardware was identifi ed and analyzed to ensure that it meets the requirements for controlling the tillage depth of the working elements. They include a sensor for determining the penetration depth of the working element; microcontroller (setting and control of regulated force impact on the soil, i.e. vertical movement of the electric cylinder rod); electric cylinders (linear actuators). To test the developed algorithms for the functioning of the automatic control system for adjusting the travel depth of the working elements for presowing soil cultivation, it is necessary to conduct experimental studies in laboratory and production conditions.

Synthesis of a Scalar Automatic Control System of a Valve Engine with Field Control for a Rowing Electric Installation with an Azipod Propulsion and Steering System

2021 ◽  
Vol 64 (6) ◽  
pp. 29-35
Author(s):  
Vitaly Vysotsky ◽  
◽  
Igor Markov ◽  
Yuri Matveev ◽  
◽  
...  
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Electric Drive ◽  
Structural Complexity ◽  
Control Object ◽  
Steering System ◽  
Synchronous Machine ◽  
Object A ◽  
Valve Engine

The article deals with the main trends in the development of marine automatic AC electric drive systems. A variant of the implementation of an electric drive using an electromechanical converter of a synchronous machine with electromagnetic field excitation is presented. A promising electric drive system with a valve engine for the icebreaker's with the Azipod propulsion and steering system is proposed. The aim of the work is to eliminate the structural complexity and expand the functional capabilities of the electric drive by using a scalar automatic control system of the frequency of rotation in the two-zone control of the valve motor of the EPS. The novelty lies in the use of the approach and representation of the control object-a valve motor as an analog of a DC collector motor controlled by an armature and by a field. The analysis of control processes is directly related to the processes of electromechanical energy conversion occurring in a synchronous machine.

Research on Root Locus Correction Algorithm in Automatic Control System

2020 ◽  
Vol 12 (3) ◽  
pp. 30-45
Author(s):  
Weifang Zhai ◽  
Juan Feng
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Control Object ◽  
Correction Method ◽  
Stability Control ◽  
Root Locus ◽  
Expected Performance ◽  
The Stability ◽  
Classical Control

Aiming at the stability control of the automatic control system, this paper proposes a root locus correction scheme. By establishing the mathematical model of the control object and using the root locus correction method in the classical control theory, the design of the control system is completed. The simulation experiment of the control system is carried out in the MATLAB environment, and the key points of the scheme are summarized. The simulation results show that the scheme not only successfully achieves the stability control of the system, but also meets the expected performance index, which fully proves its correctness and effectiveness.

Digital Automatic Control System with PID Controller

1970 ◽  
Vol 110 (4) ◽  
pp. 13-16
Author(s):  
A. Petrovas ◽  
S. Lisauskas ◽  
R. Rinkeviciene
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Design Process ◽  
Automatic Control System ◽  
Pid Control ◽  
Pid Controller ◽  
Control Algorithm ◽  
General Purpose ◽  
Simulation Results

The design process of digital automatic control system with PID controller is considered. The solution of problems related with implementation of PID control algorithm into general purpose 8-bit microcontroller is discussed. Simulation results demonstrating performance of system are presented. Ill. 4, bibl. 6, tabl. 3 (in English; abstracts in English and Lithuanian).http://dx.doi.org/10.5755/j01.eee.110.4.277

scholarly journals IMPLEMENTATION OF THE METHODS OF IDENTIFICATION OF STATIC CONTROL OBJECTS

2017 ◽  
pp. 72-78
Author(s):  
Sergey Pachkin ◽  
Sergey Pachkin ◽  
Roman Kotlyarov ◽  
Roman Kotlyarov
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Mathematical Description ◽  
Control Object ◽  
Parametric Identification ◽  
Identification Problem ◽  
Temperature Control System ◽  
The Mathematical Model

One of the main tasks solved in the development of automatic control systems is the identification of the control object, which consists in obtaining its mathematical description. The nature and type of the mathematical model is determined by the goals and tasks for which it will be used. In the present case, the aim of obtaining the model is the synthesis of an automatic control system. Proceeding from the requirements of control problems, the identification problem consists in determining the structure and parameters of the mathematical model that ensure the best similarity of the model and object responses to the same input action. The article considers the experimental method of obtaining a mathematical description of the control object based on the results of measuring its input and output parameters and then processing the obtained results. The control object is the EP10 emulator made by the Oven Company, which is a miniature furnace. The emulator is used in experimental research in the process of commissioning using thermostat controls, and also applicable for educational purposes as part of training and research stands. As a result of structural identification with subsequent adjustment of the coefficients with the help of parametric identification, a model of the control object in the form of a second order aperiodic link is obtained. Parameters and type of the mathematical model allowed to make calculations and determine the parameters of adjustment of the TRM251 PID-controller. The software implementation of the automatic control system in the MatLAB environment made it possible to evaluate transient processes in a closed system. Thus, the calculation and analysis of the automatic control system in the first approximation were made. The final result can be obtained at the stage of commissioning the automatic temperature control system in the EP10 emulator using adaptation algorithms.

scholarly journals Automatic Taxiing Direction Control System for Carrier-Based Aircraft

2019 ◽  
Vol 8 (2) ◽  
pp. 171-179
Author(s):  
Mariusz Krawczyk ◽  
Cezary Szczepański ◽  
Albert Zajdel
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Control Algorithm ◽  
Proper Method ◽  
Direction Control

This paper solves the problem of automatic taxiing direction control of carrier-based aircraft. On modern aircraft carriers, taxiing aircraft either propel themselves using their own engines or are towed by specialised tugs, which requires dedicated personnel and assets. The automatization of this process would simultaneously increase aircraft flow and decrease the number of personnel and assets required. The key challenge in the automatization of this type of process is the development of an automatic control system capable of performing the requisite tasks, which our researchers managed to do. First, the specific conditions of taxiing on-board carriers were analysed and modelled. The model of a fixed-wing aircraft best suited to this purpose was identified and the proper method of automatic control – ADRC – chosen. The algorithm used in the methodto facilitate effective direction control of a taxiing aircraft was formulated and extensively tested. The results of automatic taxiing simulation for F/A-18 aircraft have been presented. The conclusion is that the ADRC type control algorithm can ensure effective automatic control of taxiing aircraft.

scholarly journals FILTERS RESEARCH FOR FREE MOTION EXTRACTION IN SELF-TUNING AUTOMATIC CONTROL SYSTEMS

2017 ◽  
Vol 8 (3) ◽  
Author(s):  
V. A. Khobin ◽  
M. V. Levinskyi
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Transmission Coefficient ◽  
Automatic Control System ◽  
Control Variable ◽  
Spectral Composition ◽  
Control Object ◽  
Free Motion ◽  
Transition Coefficient ◽  
Self Tuning

Technological type control objects specific feature, which distinguish them among many mobile or electro technical types, is more low-frequency parametric disturbances spectral composition than spectral composition of coordinate disturbances. Most often parametric disturbances reveal themselves in changing control object transmission coefficient in the channel ―controller control action – control variable‖. On a number of occasions transmission coefficient can change in a wide range – in 2…10 times more than initial value. Coordinate disturbances change control variables but don’t change control object features. Besides spectral density of control variable change, under the impact of coordinate disturbances, has its peak in low-frequency range and characterize forced component of automatic control system motion. Parametric disturbances have influence on control variables and on control object properties, in particular on its transition coefficient. In this case, character of transient processes change, i.e. free motion component of the system. Spectral density of control variable changes, under the influence of transition coefficient change, has its peak, in general, in mid-frequency range. In the case, when using filters, even approximately, it is possible to separate out mid-frequency component from the overall process, which characterizes generally free motion of automatic control system, then it is possible to estimate current value of control object transmission coefficient using parameters change of this component. Such control variable components motions separation is used for designing selftuning ACS. In this case the informative parameter is dispersions difference of control object control variable and control variable of its model in the outputs of linear band pass filters. This dispersion difference is in proportion to current value of transition coefficient. In this article the results of simulation modeling computer experiments of self-tuning automatic control system with opened self-tuning loop are represented. The analysis of filtering efficiency, for three filter model options, are represented as well. The analysis was carried out with three different coordinate disturbances spectral compositions, with the same dynamics of control object and its model and with the different dynamics. Recommendations for filters structures alternatives selection are given. The possibility of optimal parametric tuning of filters is examined.

scholarly journals Research of Variable Application Control System Based on Fuzzy Control

2018 ◽  
Vol 38 ◽  
pp. 01013
Author(s):  
JinXia Huang ◽  
Yu Zhang ◽  
XiaoGuang Su ◽  
SiQing Tian
Keyword(s):  
Control System ◽  
Fuzzy Control ◽  
Automatic Control ◽  
Automatic Control System ◽  
Pesticide Residues ◽  
Control Algorithm ◽  
Unit Area ◽  
Pesticide Application ◽  
Simulation Results ◽  
Fuzzy Control Algorithm

The AT89C52 microcontroller and the fuzzy control algorithm is used to design the automatic control system of variable Spraying pesticides. The system adjusts automatically the electric regulating valve according to given Spraying pesticides per unit area so that the actual amount of Spraying pesticides equal to the set value. The simulation model of automatic control system of variable pesticide application was established, and the controller was simulated by MATLAB / SIMULINK software fuzzy control toolbox. The simulation results show that the structure and algorithm of the proposed automatic control system of pesticide application is feasible, The system improves greatly pesticide utilization, reduce pesticide residues and environmental pollution.

Research on Closed-Loop Control Algorithm of Pneumatic Clutch Based on Optimizing Engaged - Schedule

2014 ◽  
Vol 509 ◽  
pp. 213-217
Author(s):  
Xing Zhong Li ◽  
Yu Long Lei ◽  
Shao Hua Sun
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Control Algorithm ◽  
Simulation Analysis ◽  
Test Scheme ◽  
Loop Control ◽  
Stand Test ◽  
Clutch Engagement

According to the automatic control system of pneumatic AMT clutch, this paper proposes a novel PID control based on logical switch of clutch engagement index. The PWM control is used to make a control for the solenoid valve. And a controller is established by this control algorithm. The automatic control system of pneumatic AMT clutches modeling using the AMEsim software, related simulation analysis and modifying the control parameters of the controller. It is conducted stand test according to the test scheme for the clutch automatic control system. And the test data is record and made an analysis on. The control algorithm is verified by stand test, greatly improving the bonding quality of the clutch.

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