Genetic Algorithm Based Fuzzy Logic Controller for Wire-EDM Machine

2014 ◽  
Vol 536-537 ◽  
pp. 1273-1276
Author(s):  
Chen Pan ◽  
Ru Qing Chen
Keyword(s):  
Genetic Algorithm ◽  
Fuzzy Logic ◽  
Control System ◽  
Steady State ◽  
Closed Loop ◽  
Fuzzy Logic Controller ◽  
Tension Control ◽  
Wire Edm ◽  
Wire Tension ◽  
Tension Control System

Wire tension as well as wire feed should be controlled tightly for the geometry and corner accuracy of wire-EDM. A closed-loop wire tension control system for Micro-Wire-EDM is presented to guarantee a smooth wire transport and a constant tension value. To keep smooth wire transportation and avoid wire breakage during wire feeding, the reel roller is modified and the clip reel is removed from the wire transport mechanism. A genetic algorithm-based fuzzy logic controller (FLC) is proposed to investigate the dynamic performance of the closed-loop wire tension control system. Theoretical analysis and experimental research demonstrate that the developed wire transport system can result in satisfactory transient response, steady-state response and robustness. The proposed FLC can obtain faster transient response and smaller steady-state error than PI controller.

Simulation of Closed-Loop Paper Tension Control System

2013 ◽  
Vol 329 ◽  
pp. 434-437
Author(s):  
Yu Qiu Sun ◽  
Ji Bin Zhao ◽  
Jian Xin Sun ◽  
Ji Fei Cai
Keyword(s):  
Control System ◽  
Quantitative Research ◽  
Control Parameter ◽  
Closed Loop ◽  
Tension Control ◽  
Loop Control ◽  
Printing Quality ◽  
Control Diagram ◽  
Tension Control System

Paper tension is the most important control parameter in roll material production that directly impacts the printing quality of the web offset. Based on the closed-loop paper tension control theory, by conducting a research into the simulation of paper tension control system with MATLAB/SIMULINK, presented the closed-loop control diagram about the paper tension control system. Under different control parameter, the value of the overshoot, respond speed and residual of the system varies. As a result, the quantitative research on the simulation of the system offers a valid means in improving the control accuracy.

Optimal analysis and application of the warp tension control system for a rapier loom

2021 ◽  
pp. 004051752110536
Author(s):  
Yanjun Xiao ◽  
Zhenpeng Zhang ◽  
Zhenhao Liu ◽  
Weiling Liu ◽  
Nan Gao ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Control System ◽  
Pid Control ◽  
Performance Optimization ◽  
Experimental Studies ◽  
Tension Control ◽  
Control Performance ◽  
Improved Genetic Algorithm ◽  
Warp Tension ◽  
Tension Control System

Traditional proportional–integral–derivative (PID) control performance optimization is an essential method to improve a loom’s warp tension control performance. This work proposes an improved genetic algorithm optimized PID control scheme to overcome the decline in control performance of the traditional PID control algorithm in a loom’s warp tension control system. Through the decoupling analysis of loom motion mechanism, the establishment of warp tension model and the optimization of fitness evaluation mechanism of genetic algorithm can effectively overcome the problems of local optimal solution and algorithm degradation of genetic algorithm. Simulation experiments were carried out with the traditional PID, the integral separation PID, and the genetic PID in warp tension control. The results show the advantage of the genetic-PID algorithm to control warp tension stability. Ultimately, according to the functional characteristics of the loom mechanism, a tension control platform for experimental studies was established. The test results show that the maximum fluctuation range of warp tension is within [−2, +6] at the test speed of 850 rpm, which meets the requirements of long-term stable and reliable control of warp tension under different weaving conditions.

Track Tension Controller Design and Experimental Evaluation in Tracked Vehicles

2004 ◽  
Vol 126 (4) ◽  
pp. 764-771 ◽  
Author(s):  
Kunsoo Huh ◽  
Chung Choo Chung ◽  
I. M. Kim ◽  
Mun-suk Suh
Keyword(s):  
Control System ◽  
Fuzzy Logic Controller ◽  
Controller Design ◽  
Field Tests ◽  
Tension Control ◽  
Optimum Level ◽  
Hydraulic Unit ◽  
Tracked Vehicles ◽  
Highly Nonlinear ◽  
Tension Control System

Track tension is closely related to the maneuverability of tracked vehicles and the durability of their tracks and suspension systems. The tension needs to be maintained at an optimum level throughout the maneuver in order to minimize the excessive load on the tracks and to prevent track peeloff from the sprocket. In this paper, a track tension control system is developed for tracked vehicles which are subject to various maneuvering tasks. It consists of track tension estimator, track tension controller, and hydraulic unit. The tension around the idler and sprocket is estimated in real time, respectively. Using the estimated track tension and considering the highly nonlinear vehicle characteristics, a fuzzy logic controller is designed in order to control the track tension in the vehicles. The performance of the proposed tension control system is verified through simulation and experimental field tests.

scholarly journals Sistem Kontrol Troli Rotari sebagai Tempat Penitipan Barang Otomatis menggunakan Fuzzy Logic

2020 ◽  
Vol 8 (3) ◽  
pp. 575
Author(s):  
RISNANDA SATRIATAMA ◽  
DENNY DARLIS ◽  
PORMAN PANGARIBUAN
Keyword(s):  
Fuzzy Logic ◽  
Control System ◽  
Steady State ◽  
Pulse Width ◽  
Completion Time ◽  
Fuzzy Logic Controller ◽  
Pulse Width Modulation ◽  
Settling Time ◽  
Load Test ◽  
Rotary Encoder

ABSTRAKTroli rotari memerlukan sistem kontrol untuk mengatur rak ke posisi yang diinginkan. Penelitian ini berfokus pada sistem kontrol posisi rak menggunakan metode Fuzzy Logic Controller (FLC) dengan beban berbeda dari setiap pengguna. Masukan pada sistem kontrol FLC adalah error dan delta error dari sensor rotary encoder. Keluaran dari FLC adalah Pulse Width Modulation yang digunakan untuk mengontrol kecepatan motor DC. Hasil penelitian dari tiga variasi fungsi keanggotaan keluaran dengan beban pada satu rak, pengujian tanpa beban memiliki settling time antara 3,11 s hingga 3,24 s dan error steady state antara 3 hingga 8 counter. Pengujian dengan beban 250 g memiliki settling time antara 3,92 s hingga 8,80 s dan error steady state antara –5 counter hingga 4 counter. Sedangkan pengujian dengan beban 500 g memiliki settling time antara 4,66 s hingga 7,39 s dan error steady state antara 8 counter hingga 12 counter.Kata kunci: tempat penitipan barang, troli rotari, Fuzzy Logic Controller. ABSTRACTRotary trolley needs control system that used for rack control to the position. The research focused on rack position control system using the Fuzzy Logic Controller (FLC) method with different loads from each user. Inputs to the FLC control system are error and delta error from the rotary encoder sensor. The output of the FLC is Pulse Width Modulation which is used to control the speed of the DC motor. The results from 3 variations of the meeting results, the no-load test had a completion time of between 3.11 s to 3.24 s and steady-state conditions between 3 counters to 8 counters. Testing with a load of 250 g has a completion time of 3.92 s to 8.80 s and steady-state conditions between -5 counters to 4 counters. While testing with a load of 500 g has a settling time of 4.66 s to 7.39 s and steady-state conditions between 8 to 12 counters.Keywords: deposit box, rotary trolley, Fuzzy Logic Controller.

Experimental Evaluation of a Track Tension Controller in Tracked Vehicles

2004 ◽  
Author(s):  
Kunsoo Huh ◽  
Chung Choo Chung ◽  
Mun-Suk Suh
Keyword(s):  
Control System ◽  
Fuzzy Logic Controller ◽  
Field Tests ◽  
Tension Control ◽  
Optimum Level ◽  
Hydraulic Unit ◽  
Tracked Vehicles ◽  
Suspension Systems ◽  
Highly Nonlinear ◽  
Tension Control System

Track tension is closely related to the maneuverability of tracked vehicles and the durability of their tracks and suspension systems. The tension needs to be maintained at an optimum level throughout the maneuver in order to minimize the excessive load on the tracks and to prevent track peel-off from the sprocket. In this paper, a track tension control system is developed for tracked vehicles which are subject to various maneuvering tasks. It consists of track tension estimator, track tension controller and hydraulic unit. The tension around the idler and sprocket is estimated in real-time, respectively. Using the estimated track tension and considering the highly nonlinear vehicle characteristics, a fuzzy logic controller is designed in order to control the track tension in the vehicles. The performance of the proposed tension control system is verified through experimental field tests.

scholarly journals Performance evaluation of a hybrid fuzzy logic controller based on genetic algorithm for three phase induction motor drive

2019 ◽  
Vol 10 (1) ◽  
pp. 117 ◽  
Author(s):  
Ahmed Jadaan Ali ◽  
Ziyad Farej ◽  
Nashwan Sultan
Keyword(s):  
Genetic Algorithm ◽  
Fuzzy Logic ◽  
Induction Motor ◽  
System Performance ◽  
Closed Loop ◽  
Fuzzy Logic Controller ◽  
Loop System ◽  
Error Signal ◽  
Closed Loop System ◽  
Three Phase

<p class="Author"><span>It is known that controlling the speed of a three phase Induction Motor (IM) under different operating conditions is an important task and this can be accomplished through the process of controlling the applied voltage on its stator circuit. Conventional Proportional- Integral- Differeantional (PID) controller takes long time in selecting the error signal gain values. In this paper a hybrid Fuzzy Logic Controller (FLC) with Genetic Algorithm (GA) is proposed to reduce the selected time for the optimized error signal gain values and as a result inhances the controller and system performance. The proposed controller FL with GA is designed, modeled and simulated using MATLAB/ software under different load torque motor operating condition. The simulation result shows that the closed loop system performance efficiency under the controller has a maximum value of 95.92%. In terms of efficiency and at reference speed signal of 146.53 rad/sec, this system performance shows an inhancement of 0.67%,0.49% and 0.05% with respect to the closed loop system efficiency performance of the PID, FL, and PID with GA controllers respectively. Also the simulation result of the well designed and efficient GA in speeding up the process of selecting the gain values, makes the system to have an efficiency improvement of 14.42% with respect to the open loop system performance.</span></p>

Research on Tension Control System of Wire Saw Slicing Machine

2014 ◽  
Vol 621 ◽  
pp. 419-424
Author(s):  
Yan Bo Feng ◽  
Bo Chen ◽  
Tao Sun
Keyword(s):  
Control System ◽  
High Speed ◽  
Closed Loop ◽  
High Surface ◽  
Tension Control ◽  
High Yield ◽  
Functional Requirements ◽  
High Surface Quality ◽  
Wire Saw ◽  
Tension Control System

Nowadays, wire sawing becomes the most advanced brittle crystals slicing technology because of its advantages of slicing larger crystals ingots into very small thickness, high surface quality, high yield wafers. In the process, the thin wire, which is the processing tools, travels at high speed, and subjects to external excitation from many aspects. Wire saw tension control is the core and difficulty of the control system. Mathematical models of tension subsystems were studied. The control strategy of swing arm motor tension direct closed-loop combination of speed difference indirect closed-loop was proposed. The developed tension control hardware and software system reached the functional requirements and technical indicators, and constant tension precision control was solved effectively.

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