scholarly journals PLC-Based Safety Instrumented System of a Boiler using HAZOP

2018 ◽  
Vol 3 (1) ◽  
pp. 1-9
Author(s):  
Mahfoud CHAFAI ◽  
Abderrahmane OUADI ◽  
Hamid BENTARZI
Keyword(s):  
Control System ◽  
Pressure Sensors ◽  
Petrochemical Plant ◽  
Input Interface ◽  
Safety Function ◽  
Related Part ◽  
Operational Safety ◽  
Output Module ◽  
Machine Control ◽  
Interface Modules

HAZOP Analysis is used to determine great deviations which will affect the operational safety of a boiler of an existing petrochemical plant that may affect on persons, material and the environment. PLC is proposed to provide the safety function to fit into the overall machine control system as a safety-related part. It reads from the temperature, pressure sensors via its input interface modules and outputs commands in the case of critical deviation via the output module to the final control elements such as actuators allowing an improvement in the safety of the overall boiler system.

Application of PLC Technology in the Control System of Plate Shearing Machine

2013 ◽  
Vol 312 ◽  
pp. 777-781
Author(s):  
Lu Ping Liu
Keyword(s):  
Control System ◽  
Control Technology ◽  
Working Process ◽  
Industrial Manufacturing ◽  
Plc Control ◽  
Machine Control ◽  
And Control

In the modern industrial manufacturing field, PLC plays a very important role. In this paper, through analyzing the working process and control requirements of plate shearing machine and using PLC control technology, the automation design of the plate shearing machine control system is realized.

Based on Vector Control of All-Electric Injection Molding Machine Control System Design

2012 ◽  
Vol 490-495 ◽  
pp. 2210-2214
Author(s):  
Ming Hui Li ◽  
Zheng Qi Li
Keyword(s):  
Control System ◽  
Injection Molding ◽  
Vector Control ◽  
System Design ◽  
High Reliability ◽  
Permanent Magnet Synchronous Motor ◽  
Control System Design ◽  
Molding Machine ◽  
Injection Molding Machine ◽  
Machine Control

According to the all-electric injection molding machine control system requirements, the vector control applied to the permanent magnet synchronous motor control, we propose a fully electric injection molding machine control system design, through analysis and research that can further improve the program precise all-electric injection molding machine control, its stability, high reliability, to better meet the all-electric injection molding machine of precision and stability requirements.

Design a PLC-Based Variable-Frequency Governing Pressure-Constant Water-Supply Control System

2014 ◽  
Vol 1044-1045 ◽  
pp. 755-758
Author(s):  
Xin Hui Yang
Keyword(s):  
Control System ◽  
Water Supply ◽  
Pressure Sensors ◽  
Variable Frequency ◽  
Pipe Network ◽  
Monitoring And Control ◽  
Control Software ◽  
Industrial Control ◽  
Time Basis ◽  
And Control

This paper provides a design for a PLC-based, variable-frequency governing, pressure-constant, automatic water-supply control system. This design is based on the current situations at the water supply plants found in small and medium cities in China. In this control system, the pressure signal across the pipe network is acquired by pressure sensors and then transmitted to PID modules in the PLC in order to control switching between pump motors. At the same time, the PLC is connected with a personal computer for industrial control purposes. On this computer, monitoring and control software has been installed in order to monitor and control the pressure-constant water-supply system on a real-time basis.

Machine Control System of Steady State Superconducting Tokamak-1

2016 ◽  
Vol 112 ◽  
pp. 731-734 ◽  
Author(s):  
Harish Masand ◽  
Aveg Kumar ◽  
M. Bhandarkar ◽  
K. Mahajan ◽  
H. Gulati ◽  
...  
Keyword(s):  
Control System ◽  
Steady State ◽  
Machine Control ◽  
Superconducting Tokamak

scholarly journals Human as the cybernetic system

2021 ◽  
pp. 179-183
Author(s):  
А.А. Исаев
Keyword(s):  
Control System ◽  
Personal Computer ◽  
Control Object ◽  
Direct Communication ◽  
Conditioned Reflexes ◽  
Communication Device ◽  
Cybernetic System ◽  
Machine Control ◽  
And Behavior ◽  
Body Subject

Предложены авторские трактовки понятий «человек» (как высокоразвитая кибернетическая система (биоробот), которая функционирует на основании определенных программ (врожденных и сформированных в процессе жизни), «кибернетическая антропология» (как наука, рассматривающая человека как компьютеризированную систему управления, которая функционирует на основании определенных программ), «психопрограммистика» (как отрасль кибернетической антропологии, изучающая врожденные программы человека, которые определяют мышление и поведение последнего). Раскрывается структура человека как биоробота, основными элементами которой являются: 1) Органическая машина (объект управления); 2) Управляющий орган (субъект управления); 3) Устройство «прямой связи»; 4) Устройство «обратной связи». Выявляются основные элементы Управляющего органа человека как биоробота: 1) Совершенный компьютер; 2) Персональный компьютер; 3) Сенсор (Душа). Предложены авторские трактовки понятий «чувства» и «эмоции» с позиции кибернетической антропологии. Раскрываются основные элементы программ, которые лежат в основе безусловных и условных рефлексов. The author's interpretations of the concepts of “human” are proposed as a highly developed cybernetic system (biorobot), which functions on the basis of certain programs (innate and formed in the process of life); “Cybernetic anthropology” as a science that considers a person as a computerized control system that functions on the basis of certain programs, as well as “psychoprogramming” as a branch of cybernetic anthropology, which studies the innate programs of a person that determine the thinking and behavior of the latter. The structure of a person as a biorobot is revealed, the main elements of which are: 1) Organic machine (control object); 2) Managing body (subject of management); 3) "Direct communication" device; 4) Device "feedback". The main elements of the Managing body of a person as a biorobot are revealed: 1) Perfect computer; 2) Personal computer; 3) Sensor (Soul). The author's interpretations of the concepts of "feelings" and "emotions" from the standpoint of cybernetic anthropology are proposed. The main elements of programs underlying unconditioned and conditioned reflexes are revealed.

SOME ALGORITHMS OF THE LOGGING LOADING AND TRANSPORT MACHINE CONTROL SYSTEM

2021 ◽  
pp. 1-9
Author(s):  
Dmitry Vyacheslavovich Akinin ◽  
Alexey Fedorovich Alyabiev ◽  
Evgeny Evgenievich Bazhenov
Keyword(s):  
Control System ◽  
Machine Control ◽  
Transport Machine

Fuzzy Control of Hydrogen Generation by the Reaction of Activated Aluminum Particles and Water

2017 ◽  
Vol 5 (1) ◽  
pp. 1-7
Author(s):  
Bui Trong Giap ◽  
Kenji Takahara ◽  
Toshinori Kajiwara ◽  
Koji Maekawa
Keyword(s):  
Control System ◽  
Fuzzy Control ◽  
Hydrogen Generation ◽  
Pressure Sensors ◽  
Experimental System ◽  
Reaction Vessel ◽  
Water Tank ◽  
Generation System ◽  
Aluminum Particles ◽  
Fuzzy Control System

The purpose of this paper is to design a fuzzy control system for generating hydrogen at a desired level by a reaction between water and activated aluminum particles. The activated aluminum particles are produced shredded aluminum sawdust. It is difficult to characterize the reaction quantitatively because the characteristics of hydrogen generating reaction vary as depending on the samples, the environment of the reaction and so on. The experimental system consists of a fuel cell (FC) of 100[W], a water tank, a reaction vessel, pressure sensors, a water pump, a radiator and a one-chip microcomputer. The fuzzy control system is designed to determine the quantum of water which is supplied to the activated aluminum particles. The error forms a desired value of the pressure of the reaction vessel and the change of the error are chosen as the labels of the fuzzy membership functions. The proposed fuzzy control system is applied to maintain the pressure of the reaction vessel of the developed hydrogen generation system at a certain level. The developed hydrogen generation system is confirmed to provide hydrogen to the FC by experiments under various conditions.

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