scholarly journals Research and Development of Management and Control System for Lake Sediment Improvement and Dehydration Treatment

2021 ◽  
Vol 668 (1) ◽  
pp. 012046
Author(s):  
Gongxun Liu ◽  
Xin Liang ◽  
Qingbo Zhang ◽  
Ruoyuan Liu ◽  
Guojun Hong ◽  
...  
2014 ◽  
Vol 598 ◽  
pp. 574-577
Author(s):  
Peng Xian Cao ◽  
Hong Bin Cui ◽  
Xin Yu Liu ◽  
Xue Song Yu ◽  
Chang Long Liu

With the continuous development of CNC technology, its application is more and more extensive. In recent years, the application of CNC technology in the area of stage also made great achievements. This paper detailed a scientific and reasonable scheme of acrobatic stage machinery and its control part, using CNC technology in acrobatic stage, through the corresponding algorithm and software realizing the operation and control of any trajectory in 3D space, taking advantage of intelligent editing function of screen running track, and compared with the traditional acrobatic stage , it gets more flexible, stronger strain capacity.


2020 ◽  
Vol 3 (2) ◽  
pp. 32-37
Author(s):  
M. Sunan Ishfahani ◽  
Nur Hanifah Yuninda ◽  
Purwanto Gendroyono

The purpose of this research is to make prototype of smoke concentration levels control system in smoking room by fuzzy logic method based on arduino. The prototype is able to detect and control the smoke to stay constantly in allowed threshold to the smoking room and provide periodic information about the concentration level in that smoking room automatically. This research uses Research and Development Method, which includes requirements analysis, design, basic implementation into prototype form. Requirements analysis is based on the lack of smoke detection and control systems in smoking rooms. The design of the control system in this study is applied to fuzzy logic controller. This research emphasizes more on the basic implementation of the desired prototype by standards testing such as output voltage testing and fuzzyfication testing that have not arrived at the stage of efficiency testing. The results show that the system will be put into danger condition if the concentration of smoke reaches 80 PPM. At that level, the voltage measured by the sensor is in the range of 3.19 to 3.41 VDC with an average voltage increase of 0.035 to 0.04 VDC per PPM. Error in fuzzyfication testing is 0.04% and 0.08% based on calculation. Abstrak Tujuan penelitian ini adalah membuat prototype sistem kendali kadar kepekatan asap pada smoking room dengan metode fuzzy logic berbasis arduino. Alat ini dapat mendeteksi dan mengendalikan asap agar tetap pada ambang batas yang diperbolehkan pada smoking room serta memberikan informasi secara periodik tentang kadar kepekatan asap yang terdapat pada smoking room secara otomatis. Penelitian ini menggunakan Metode Penelitian dan Pengembangan (Research and Development) yang meliputi analisis kebutuhan, perancangan, implementasi dasar dalam bentuk prototype dan pengujian. Analisis kebutuhan didasari karena jarang terdapatnya sistem deteksi dan kendali asap pada smoking room. Perancangan sistem kendali pada penelitian ini diterapkan fuzzy logic controller. Penelitian ini lebih menekankan pada implementasi dasar dari prototype yang diinginkan dengan pengujian standar seperti pengujian tegangan keluaran dan pengujian fuzzyfikasi yang belum sampai pada tahap pengujian efisiensi. Hasil penelitian menunjukkan bahwa sistem akan mengindikasikan sebuah bahaya jika kadar kepekatan asap mencapai 80 PPM. Pada kadar tersebut, tegangan yang terukur oleh sensor berada pada kisaran 3,19 sampai 3,41 VDC dengan rata-rata kenaikan tegangan sebesar 0,035 sampai 0,04 VDC per PPM. Error pada pengujian fuzzyfikasi adalah sebesar 0,04 % dan 0,08 % yang didasarkan pada perhitungan.


2013 ◽  
Vol 273 ◽  
pp. 646-649 ◽  
Author(s):  
Bo Feng

Robot is a typical representative of high-tech research results. In a robot, the wisdom of human is applied throughout its whole structure, and also task commands are executed through an intelligent control system. Human society is always progressive and innovative. It is believed that great breakthroughs will be made to the future robots in structural combination, automatic control, working performance and so on. China is still a country in the developing stage, and therefore the research and manufacturing activities of robot products will be increasingly more. It is necessary for the research and development of robots at any period to give priority to "functional standards". On this basis, a study is made in this paper.


TAPPI Journal ◽  
2009 ◽  
Vol 8 (1) ◽  
pp. 4-11
Author(s):  
MOHAMED CHBEL ◽  
LUC LAPERRIÈRE

Pulp and paper processes frequently present nonlinear behavior, which means that process dynam-ics change with the operating points. These nonlinearities can challenge process control. PID controllers are the most popular controllers because they are simple and robust. However, a fixed set of PID tuning parameters is gen-erally not sufficient to optimize control of the process. Problems related to nonlinearities such as sluggish or oscilla-tory response can arise in different operating regions. Gain scheduling is a potential solution. In processes with mul-tiple control objectives, the control strategy must further evaluate loop interactions to decide on the pairing of manipulated and controlled variables that minimize the effect of such interactions and hence, optimize controller’s performance and stability. Using the CADSIM Plus™ commercial simulation software, we developed a Jacobian sim-ulation module that enables automatic bumps on the manipulated variables to calculate process gains at different operating points. These gains can be used in controller tuning. The module also enables the control system designer to evaluate loop interactions in a multivariable control system by calculating the Relative Gain Array (RGA) matrix, of which the Jacobian is an essential part.


2015 ◽  
Vol 19 (95) ◽  
pp. 50-53
Author(s):  
Aleksej A. Kravcov ◽  
◽  
Leonid G. Limonov ◽  
Valerij V. Sinelnikov ◽  
Stanislav V. Potapov

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