Automated Control of Fruit Flow and Pulp Washing

Author(s):  
W. R. MacClarence ◽  
A. A. Lang

Automated control is an old story in the concentrate industry and is typified by the normal evaporator control systems, brix blenders, etc. that are installed in all of the concentrate plants. The phase of automation to be discussed here concerns the control of the rate of oranges being conveyed from the storage bins to and through the juicing operation. The purpose of this control system is to allow the extraction, finishing and pulp wash processes to take place at continuous uniform rates in direct and continued relationship to evaporator requirements. Paper published with permission.

2021 ◽  
pp. 103-108
Author(s):  
Dmitry Aleksandrovich Solovyev ◽  
Galina Nickolaevna Kamyshova ◽  
Dmitry Alexandrovich Kolganov ◽  
Nadezhda Nickolaevna Terekhova

The article presents the results of modeling an intelligent control system for an irrigation complex. The introduction of precision irrigation technologies requires the development of new approaches to technical support. Traditional approaches based on simple process automation often do not lead to effective solutions. An approach based on the model of intellectualization of automated control systems is proposed. The structure of the intelligent control system for the irrigation complex is substantiated, which is based on an artificial neural network.


Author(s):  
Anatolii Zhuchenko ◽  
Ruslan Osipa ◽  
Liudmyla Osipa ◽  
Lesia Ladieva

In Ukraine, the condition of surface water near industrial enterprises is extremely critical. The operation of enterprises leads to intensive water pollution with industrial and domestic wastewater. Therefore, improving the quality of treatment facilities through the introduction of automated control systems is an urgent problem. For the operation of automated control systems for typical cleaning processes, a software package is required, which is developed on the basis of appropriate algorithmic software and mathematical models of processes. To obtain them, methods of mathematical and simulation modeling and block diagram method of algorithmization were used. In order to assess the quality of the developed algorithm for controlling the process of buffer wastewater neutralization during operation, a comparison of control system operation based on this algorithm with the most successful foreign variants of neutralization control systems was made. Simulation for the average values of operating parameters Q = 75 m3 / h, CP = 75 g / l, and Ck = 2 g / l at minimum b = 0.02 g / l pH and maximum buffer value b = 0.47 g / l pH, and also with  unidirectional extreme combination of parameters Q = 50 m3 / h, CP = 100 g / l, b = 0,02 g / l pH and Q = 100 m3 / h, CP= 50 g / l, for minimum b = 0.02 g / l pH and maximum buffering value  b = 0.47 g / l pH shows that the best quality of transient processes is for the control system operating on the basis of the developed algorithm. For any combination of parameters, the transients for this control system provide better quality transients. Studies have shown that the control system based on the developed algorithm in comparison with the previously proposed systems provides better process control by reducing the time of transients and reducing the dynamic deviation of the output parameters, which improves the quality of wastewater treatment. Given the non-stationary process and high requirements for the cleaning parameters, manual control of this process is beyond the power of even an experienced operator. The developed mathematical model describing the dynamics of the wastewater neutralization reactor with buffer properties and the process control algorithm made it possible to proceed to the development of the control system software, which is necessary for the automated control of this process.


Author(s):  
G. I. Korshunov ◽  
V. A. Pritz ◽  
E. A. Frolova ◽  
A. E. Chupisov

It is shown that quality assurance of block-modular electronic systems is achieved on the basis of reliability of control. It is necessary to provide control and diagnostics in full at all stages of the life cycle in the practice of developing and manufacturing programmable block-modular controllers. New results on the creation of the necessary means for automated control systems of serial-capable controllers are presented. Such systems can be used in preliminary and acceptance tests, as well as during adjustment in the production process. The algorithmic, software and hardware of the automated control system have been developed for functionally complete sets of modules (electronic panels). The development is performed for controllers in the tasks of the electric drive and can be used in other applications. The features of structural and circuit solutions and the layout of an automated control system are given.


Author(s):  
S.M. KARDASH ◽  
◽  
A.V. DEMIDOV ◽  

It is substantiated the necessity of evaluating the functional readiness for complexes of automated control systems (ACS) with the following factors: reliability of technical means, reliability of control programs (software reliability), reliability of the technical system taking into account the activities of combat control operators.


Author(s):  
Mikhail Yurievich Gudkov ◽  
Alexey Sergeyevich Dobrynin ◽  
Alexander Sergeyevich Koynov

The article considers the problem of the modern automated control systems which operate in the difficult conditions of constantly changing multi-factorial effects of the environment. Such systems should be considered as multi-mode, non-stationary human-technical systems, since they realize the integrated management of a complex technological object. As a rule, these systems are influenced by both environmental factors and complex man-machine mechanisms and technical means (such as communication devices with an object, programmable controllers - PLC), which constitute the control infrastructure, which ultimately leads to additional complexity and errors, additional management problems and reduced overall management quality. The approach to building an automated process control system is claimed to be based on using reference libraries and control algorithms (precedents), which are selected depending on the changing environmental conditions and the assets used, as well as on the logistics support. Despite the use of modern software and hardware in many systems, such as PLC, very often the quality of control leaves much to be desired. This is due to the fact that the control object changes over time for various reasons, and the control algorithm remains unchanged, which leads to a decrease in the efficiency of functioning of such systems. The generalized structure of the precedent process control system is described, which highlights the approach to the control of a technological object within the framework of the well-known concept of support-disturbed movement, which is suitable for building robust control systems for technological objects with substantial nonstationarity.


2021 ◽  
Vol 2094 (3) ◽  
pp. 032004
Author(s):  
A A Popov ◽  
S P Yakimov ◽  
M M Satsuk ◽  
A A Artyshko

Abstract The relevance of the studied and solved problem lies, on the one hand, in the possibility of automated control of your home devices, and on the other, in the absence of unified control systems for a smart home as a project. The latter thesis implies the actual absence of such an automated control system among the existing and sold ready-made solutions, which could be expanded by the user himself, that is, by the buyer. In this regard, there is a need to improve and develop our own product in this area. This approach will allow you to combine both the creation of your own working prototype of a smart home, and your own implementation of the automated control system, which will allow each user to refine, modify and implement new devices independently in an already assembled system based on his house or apartment. This article presents the main aspects of the design and software solution used. The software implementation is performed in the JetBrains PhpStorm development environment in PHP, Apache web server, MySQL DBMS.


2021 ◽  
Vol 295 (2) ◽  
pp. 245-253
Author(s):  
Olha KOROTYCH ◽  
◽  
Vitalii NEIMAK ◽  
Anatolii ZALIZETSKYI ◽  
Nataliya ZASHCHEPKINA ◽  
...  

The article describes the stages of development of a laboratory installation for research and analysis of operational temperature and energy characteristics of refrigerated display cases with automated and non-automated control systems for cold set and thawing. The main elements of the developed laboratory installation are: 1) Refrigerating show-window of TATIANA 1.0NS type which components are systems: cooling, control, and thawing. 2) Processor control unit – Eliwell ID controller is equipped with a digital screen, has inputs for two temperature sensors RTS or NTC and three output relays to control the refrigeration compressor, fan and temperature process of the thawing cycle. The processor unit also provides control of the process of throttling the refrigerant in the evaporator to prevent water hammer in the motor-compressor of the refrigeration unit showcase 3) Flexible electric heater built into the evaporator to provide faster heating during automatic thawing. 4) System of forced air cooling of the condenser. The automatic control system with the processor control unit, which is implemented in the laboratory unit instead of the standard thermostat, provides precise temperature control in an extended range of cooling modes and cyclic thawing process. The showcase works in a stable and economical mode. The operating laboratory installation for research of parameters of the improved refrigerating show-window with the automated control system is developed and equipped. The laboratory refrigeration unit is equipped with devices for measuring and controlling electrical and energy parameters, temperature and humidity in the refrigeration chamber of the shop window during the study of cooling and defrosting modes. With an automatic control system in the shop windows, food products can be stored constantly without spending time on overloading them during the thawing of the evaporator. The developed operating laboratory installation can be used in the educational process for research and comparative analysis of operational temperature and energy characteristics of refrigerated display cases with automated and non-automated control systems for cold storage and defrosting.


2018 ◽  
Vol 41 ◽  
pp. 03006
Author(s):  
Ziyodullo Eshmurodov ◽  
Folib Holboiv

The article shows the peculiarity of the system of technological automation of the newest Simatic S7-1500 PLCs, for electric drives of hoisting transport machines, the analysis of control systems for electric drives of operating mine hoisting machines of mining complexes. One of the main ways to increase the energy efficiency of MLM is to replace old asynchronous electric motors with a phase rotor with squirrel cage induction motors designed for operation in a frequency-controlled electric drive. The introduction of a frequency converter and an electric drive control system, which together allow the recovery of electricity in the supply network in the mode of generator braking. Thus, the system for automated control of the mine hoisting machine based on the Simatic S7-1500 PLC, with the developed control algorithm, is an integrated energy-efficient control system, which it is advisable to use in the management of the SHM.


2019 ◽  
Vol 135 ◽  
pp. 02003
Author(s):  
Vladimir Shcherbakov ◽  
Ivan Buntsev ◽  
Olga Kovaleva

Monitoring the geometric parameters of cutting and cleaning ballast during reconstruction and overhaul works is one of the most important tasks of ensuring high quality repair work. The paper describes a new type of automated control system to control the cutting process and the cleaning of ballast performed at major overhaul and reconstruction. This automated control system uses the data of a multisystem GNSS receiver, base Reference stations and spring-return mechanisms for installing antennas on the working body of the track machine (bar chain). Nowadays, gravel-cleaning machines have installed standard work quality control systems (depth of ballast cut and lateral slope), and other measuring control tools are also used. The disadvantages of existing technologies and instrumental testing are considered. The modern automatic control systems of various types developed by SGUPS and based on the use of global navigation systems are presented. Detailed schemes of working elements of ACS installed on the ballast cleaning machine (BCM) are presented. Algorithms to determine the depth and cross slope of the ballast cutting and control of these values are considered. The use and effectiveness of this type of ACS providing the required accuracy of work and continuous monitoring of the main quantities are substantiated.


Author(s):  
Vasyl Shvaliuchynskyi ◽  
Serhii Skorodid ◽  
Serhii Pochynok

Current state of the development and implementation of automated control systems in the defense forces is analyzed. Taking into account of experience, gained during antiterrorist operation (Joint Forces Operation), the specifics of control systems functioning has been given. It is defined that automated control system is being developed by creation of hierarchical structure separately for each component of defense forces and, above all, is aimed on meeting its own needs. The main activities which might provide a system approach to development and implementation of a single automated control system in the defense forces have been identified.


Sign in / Sign up

Export Citation Format

Share Document