scholarly journals Modernization of a cooling water control system for the production of plastic pipes using fuzzy logic

2021 ◽  
Author(s):  
Marin Kochev ◽  
Malinka Ivanova
Keyword(s):  
Fuzzy Logic ◽  
Control System ◽  
Cooling Water ◽  
Water Control ◽  
Plastic Pipes

Application of fuzzy logic control system for reactor feed-water control

1995 ◽  
Vol 74 (1) ◽  
pp. 61-72 ◽  
Author(s):  
Takashi Iijima ◽  
Yoshiaki Nakajima ◽  
Yasushi Nishiwaki
Keyword(s):  
Fuzzy Logic ◽  
Control System ◽  
Fuzzy Logic Control ◽  
Feed Water ◽  
Water Control ◽  
Logic Control

Dynamic Optimal Control for Metallurgical Continuous Casting Secondary Cooling Water Design of Adaptive Systems

2014 ◽  
Vol 926-930 ◽  
pp. 1322-1325
Author(s):  
Jin Hong Zhang ◽  
Jun Li Jia ◽  
Shu Yan Zhang
Keyword(s):  
Control System ◽  
Continuous Casting ◽  
Water Distribution ◽  
Continuous Casting Machine ◽  
Cooling Water ◽  
Distribution Model ◽  
Secondary Cooling ◽  
Water Control ◽  
Technical Requirements ◽  
And Control

In conventional continuous casting secondary cooling water control method on the basis of the proposed adaptive control strategy for water distribution.According to the production characteristics of slab continuous casting machine, the establishment of a dynamic soft reduction model of secondary cooling water control system and online. by introducing water distribution model and control system implementation, Through the adjuster to optimize performance, make the water distribution system in less money subject to meet the technical requirements of good results. Simulation and application of results showed that the effectiveness of the proposed model and control algorithms, speed control system for the disturbance has a good target temperature following the performance.

Design of Digital Test Platform for Diesel Engine

2013 ◽  
Vol 333-335 ◽  
pp. 2314-2318
Author(s):  
Shu De Ji ◽  
Zhen Jia ◽  
Zhi Hong Wang ◽  
Ya Jun Liu ◽  
Xiao Yan Yuan ◽  
...  
Keyword(s):  
Control System ◽  
Cooling Water ◽  
Test Method ◽  
Test Results ◽  
Water Control ◽  
Overall Design ◽  
Test Conditions ◽  
Test Platform ◽  
Digital Test ◽  
Manual Manipulation

For the problem of manual manipulation and data asynchronous acquisition, the opinion of digital test was introduced. Based on the existing equipment, control and test method, the overall design of test platform was put forward. In the following, the data sharing, the software control system, dynamometer system, lube oil control system and cooling water control system were designed respectively. In the end, the digital test platform was developed. Under the new test platform, the test conditions can be adjusted automatically, the measurement device can be remote-controlled, the test data can be collected and recorded in synchronization and the test results can be sent to the designers in time.

Design and Simulation of Smart Control System for Internet Traffic Distribution on Servers by Using Fuzzy Logic System

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Raid Daoud ◽  
Yaareb Al-Khashab
Keyword(s):  
Fuzzy Logic ◽  
Control System ◽  
Input Parameter ◽  
Traffic Density ◽  
The Internet ◽  
Linguistic Variables ◽  
Internet Service ◽  
Traffic Distribution ◽  
Smart Control ◽  
High Level

The internet service is provided by a given number of servers located in the main node of internet service provider (ISP). In some cases; the overload problem was occurred because a demand on a given website goes to very high level. In this paper, a fuzzy logic control (FLC) has proposed to distribute the load into the internet servers by a smart and flexible manner. Three effected parameters are tacked into account as input for FLC: link capacity which has three linguistic variables with Gaussian membership function (MF): (small, medium and big), traffic density with linguistic variables (low, normal and high) and channel latency with linguistic variables (empty, half and full); with one output which is the share server status (single, simple and share). The proposed work has been simulated by using MATLAB 2016a, by building a structure in the Fuzzy toolbox. The results were fixed by two manners: the graphical curves and the numerical tables, the surface response was smoothly changed and translates the well-fixed control system. The numerical results of the control system satisfy the idea of the smart rout for the incoming traffics from the users to internet servers. So, the response of the proposed system for the share of server ratio is 0.122, when the input parameter in the smallest levels; and the ratio is 0.879 when the input parameters are in highest level. The smart work and flexible use for the FLC is the main success solution for most of today systems control.

Sistem Kontrol Optimal Fuzzy-Particle Swarm Optimization

2018 ◽  
Vol 9 (1) ◽  
pp. 1-5
Author(s):  
Fachrudin Hunaini ◽  
Imam Robandi ◽  
Nyoman Sutantra
Keyword(s):  
Fuzzy Logic ◽  
Particle Swarm Optimization ◽  
Control System ◽  
Membership Function ◽  
Fuzzy Logic Control ◽  
Particle Swarm ◽  
Optimization Method ◽  
Swarm Optimization ◽  
Motion Error ◽  
Logic Control

Fuzzy Logic Control (FLC) is a reliable control system for controlling nonlinear systems, but to obtain optimal fuzzy logic control results, optimal Membership Function parameters are needed. Therefore in this paper Particle Swarm Optimization (PSO) is used as a fast and accurate optimization method to determine Membership Function parameters. The optimal control system simulation is carried out on the automatic steering system of the vehicle model and the results obtained are the vehicle's lateral motion error can be minimized so that the movement of the vehicle can always be maintained on the expected trajectory

Commissioning brownstock washing controls for an evaporator limited mill

TAPPI Journal ◽  
2016 ◽  
Vol 15 (7) ◽  
pp. 459-464
Author(s):  
RICARDO SANTOS ◽  
PETER HART
Keyword(s):  
Control System ◽  
Negative Impact ◽  
Black Liquor ◽  
Pulp Mill ◽  
Control Program ◽  
Separation Point ◽  
Water Control ◽  
Oxygen Delignification ◽  
Percentage Points

An automated shower water control system has been implemented to reduce the volume and variability of weak black liquor being sent from the pulp mill to the evaporators. The washing controls attempt to balance the need for consistent and low soda carryover to the bleach plant with consistently high weak black liquor solids being sent to the evaporators. The washer controls were implemented on two bleachable grade hardwood lines (one with oxygen delignification, one without oxygen delignification) and one pine line. Implementation of the control program resulted in an increase in black liquor solids of 0.6 percentage points for the hardwood lines. Significant foam reduction was realized on the pine line since the pine black liquor solids were able to be consistently maintained just below the soap separation point. Low black liquor solids excursions to the evaporators were eliminated. Bleach plant carryover was stabilized and no negative impact on chemical consumption was noticed when controlling weak black liquor solids to recovery.

Nutrient Input and Trophic Status of the “Neue Donau”, a High-Water Control System along the River Danube in Vienna, Austria

1990 ◽  
Vol 22 (5) ◽  
pp. 137-144 ◽  
Author(s):  
M. T. Dokulil ◽  
G. A. Janauer
Keyword(s):  
Water Quality ◽  
Control System ◽  
Trophic Status ◽  
High Water ◽  
Nutrient Concentrations ◽  
Nutrient Input ◽  
Water Control ◽  
Trophic Conditions ◽  
River Danube ◽  
High Nutrient

The system “Neue Donau” functions as a control system for high waters of the river Danube and is an important recreational area for many people. Water quality and trophic status of the water body is thereforeof prime importance. The high nutrient concentrations of the river Danube (P-tot 238±41µg/l, N-tot 2.53±0.78 mg/l) reach the system via groundwater seepage. Present conditions in the basin of Neue Donau are,as a result of this nutrient in-flux,eutrophic to hypertrophic. Average values during the summer period have declined from 366 µg/l total phosphorus to 78 µg/l, and from 86 µg/l chlorophyll-a tol7µg/l between the years 1985 and 1988. However, a dam which is planned in the river at Vienna will permanently raise the water level of the river thus increasing the the groundwater flow in the direction to the Neue Donau and therefore the nutrient input which will enhance trophic conditions in the impoundment. Since macrophytes play an important role in one part of the system macrophyte management together with measures along the river are some of the suggested strategies to keep the system Neue Donau at acceptable trophic conditions and good water quality.

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