Intelligent Control of Compact Multiphase Separation System (CMSS©)—Part II: Experimental Investigation

2009 ◽  
Author(s):  
V. Sampath ◽  
R. Mohan ◽  
S. Wang ◽  
L. Gomez ◽  
O. Shoham ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Control System ◽  
Intelligent Control ◽  
Experimental Studies ◽  
Free Water ◽  
Differential Pressure ◽  
Experimental Results ◽  
Separation System ◽  
System A ◽  
Cylindrical Cyclone

In this investigation, an intelligent control system has been developed for Compact Multiphase Separation System (CMSS©) which consists of integrated configurations of three compact separators, namely, Gas-Liquid Cylindrical Cyclone (GLCC©), Liquid-Liquid Cylindrical Cyclone (LLCC©) and Liquid-Liquid Hydrocyclone (LLHC). This is a two-part paper, the first part deals with the Modeling and Simulation of the CMSS© and the second part (current paper) deals with Experimental Investigation. A new dual differential pressure sensor system has been implemented and tested for GLCC©, to eliminate the error in liquid level measurement due to change in watercut. A new watercut based control system using downstream pump speed control has been designed and tested for the LLCC© system. A new cascaded control strategy for change in set-point of differential pressure ratio using underflow quality from hydrocyclone has been designed and developed. Comparison of CMSS© performance simulator and experimental results shows that the control system simulator is capable of representing the real physical system and can be used to validate the controller design. Fuzzy logic controller has been successfully implemented and tested. Experimental results show a similar trend as the dynamic simulator results for the various input conditions and scenarios. The results from theoretical and experimental studies have shown that Free Water Knock Out (FWKO) CMSS© system can be readily deployed in the field using the control system strategies designed, implemented and tested in this study. Reliability analysis for FWKO CMSS© system has been conducted. System reliability has been calculated from reliability of components and performance reliability of the system. A new protocol has been introduced to calculate performance reliability based on performance failure of the system from simulation data. This protocol has been proven to predict performance reliability of a new system which does not have prior information on failure of components or devices.

Intelligent Control of Compact Multiphase Separation System (CMSS©)—Part I: Modeling and Simulation

2009 ◽  
Author(s):  
V. Sampath ◽  
R. Mohan ◽  
S. Wang ◽  
L. Gomez ◽  
O. Shoham ◽  
...  
Keyword(s):  
Control System ◽  
Modeling And Simulation ◽  
Intelligent Control ◽  
Dynamic Models ◽  
Free Water ◽  
Integrated System ◽  
Separation System ◽  
Matlab Simulink ◽  
Knock Out ◽  
Cylindrical Cyclone

Performance of compact separators depends on implementation of stable and robust control strategies that are suited for specific applications. In this investigation, an intelligent control system has been developed for Compact Multiphase Separation System (CMSS©) which consists of integrated configurations of three compact separators, namely, Gas-Liquid Cylindrical Cyclone (GLCC©), Liquid-Liquid Cylindrical Cyclone (LLCC©) and Liquid-Liquid Hydrocyclone (LLHC). This is a two-part paper, the first part (current paper) deals with the Modeling and Simulation of the CMSS© and the second part deals with Experimental Investigation. The specific objective of this CMSS© configuration is to knock out free water from the upstream fluids. In mature oil fields, water handling poses a huge problem. Thus water knock out at the earliest stage helps in significant cost savings. A novel fuzzy logic control system has been designed and tested for change in set-point of differential pressure ratio in LLHC. Dynamic models have been developed for each of the above mentioned control systems for design of stable PID parameters. A dynamic simulation platform (DSP) has been developed based on these models in Matlab/Simulink™ for predicting the transient performance of the integrated system. Steady state mechanistic models of individual devices are integrated to the Matlab/Simulink™ platform using look up tables to predict the overall response of the CMSS© for different scenarios.

Performance and Control of Liquid-Liquid Cylindrical Cyclone Separators

2010 ◽  
Vol 132 (1) ◽  
Author(s):  
Rajkumar S. Mathiravedu ◽  
Shoubo Wang ◽  
Ram S. Mohan ◽  
Ovadia Shoham ◽  
Jack D. Marrelli
Keyword(s):  
Control System ◽  
Dynamic Behavior ◽  
Control Strategy ◽  
Free Water ◽  
Water Concentration ◽  
System Dynamic ◽  
Experimental Investigations ◽  
System Sensitivity ◽  
Wide Range ◽  
Cylindrical Cyclone

The feasibility of using liquid-liquid cylindrical cyclone (LLCC©) as a free-water knockout device for bulk separation of oil-water mixtures in the field strongly depends on the implementation of control systems due to its compactness, less residence time, and possible inlet flow variations. In this investigation, the LLCC control dynamics have been studied extensively both theoretically and experimentally. A linear model has been developed for the first time for LLCC separators equipped with underflow watercut control, which enables simulation of the system dynamic behavior. A unique “direct” control strategy is developed and implemented, capable of obtaining clear water in the underflow line and maintaining maximum underflow rate. Dedicated control system simulations are conducted using MATLAB/SIMULINK® software to simulate the real system dynamic behavior. Detailed experimental investigations are conducted to evaluate the system sensitivity and dynamic behavior of the proposed control strategy. The results demonstrate that the proposed control system is capable of controlling the underflow watercut around its set point by obtaining maximum free-water knockout for a wide range of flow conditions, namely, inlet water concentration of 40% to 95% and inlet mixture velocity of 0.2 m/s to 1.5 m/s.

scholarly journals Demonstrative Pronouns as Anti-Logophoric Pronouns: An Experimental Investigation

2020 ◽  
Vol 11 (2) ◽  
pp. 110-127
Author(s):  
Stefan Hinterwimmer ◽  
Andreas Brocher ◽  
Umesh Patil
Keyword(s):  
Experimental Investigation ◽  
Experimental Studies ◽  
Experimental Results ◽  
Demonstrative Pronouns

In this paper we report the results of two experimental studies in which we tested the claim of Hinterwimmer and Bosch (2017) that German demonstrative pronouns are anti-logophoric pronouns: They avoid discourse referents as antecedents that function as perspectival centers. In both experiments we tested the interpretative options of demonstrative pronouns in text segments which were either perspectivally neutral or in which the narrator’s or a topical protagonist’s perspective was foregrounded. Taken together, the experimental results are most compatible with a slightly modified version of the analysis argued for in Hinterwimmer and Bosch (2017) according to which topical discourse referents in neutral narration automatically become perspectival centers. 

Intelligent Control System for Home Security

2011 ◽  
Vol 65 ◽  
pp. 332-335 ◽  
Author(s):  
Chao Da Chen
Keyword(s):  
Control System ◽  
Intelligent Control ◽  
System Integration ◽  
Infrared Sensing ◽  
Intelligent Control System ◽  
Home Security ◽  
System A ◽  
Wireless Communication Protocol ◽  
Internal Relationship ◽  
Household System

This paper discusses the intelligent control system for home security. We first analyze the internal relationship between the system integration and functional architecture combining with the requirement of efficient and comfortable of the modern household system. To demonstrate the feasibility and simulate the system, a SCM is used as centre process chip and the GSM is adopted as wireless communication protocol. On this basis, we implement the system with infrared sensing angle less than 120 and effective distance of 5 meter. The system simulation results match very well with the expected requirement. This also means the system plays a role in improving the human living comfort.

Development of Wheel Chair With Center Articulated Body and Autonomous Control System

2015 ◽  
Author(s):  
Yoshihiro Takita ◽  
Shinya Ohkawa ◽  
Hisashi Date
Keyword(s):  
Control System ◽  
Real World ◽  
Autonomous System ◽  
Autonomous Control ◽  
Experimental Results ◽  
The Real ◽  
System A ◽  
Wheel Chair ◽  
3D Lidar ◽  
Mobile Base

Our research object is to develop a wheel chair that is able to climb up and down stairs. Conventional wheel chairs use a parallel two-wheel type mobile base that is effective for moving on even surfaces but has limited clearance, posing difficulties in climbing over obstacles. In IROS2014, authors proposed and demonstrated an Octal Wheel unit that has 8 wheels with link-mechanisms and is able to climb up and down stairs. This robot is just a prototype to show the effectiveness of the mechanism. This research has begun to develop an AR chair that is able to carry a passenger, move autonomously, and climb up and down stairs. The first step of the AR chair project is to develop and construct a wheel chair with a center articulated body. The 8-wheel mechanism is applied to the AR chair model after the construction of an autonomous system. A control system with 3D LIDAR was installed on the prototype and it autonomously moved 1.4km in the Real World Robotics Challenge (RWRC) 2014 in Tsukuba on the official pedestrian road. Experimental results demonstrate the effectiveness of this method.

Cavitation in Valve-Controlled Hydraulic Actuators

1963 ◽  
Vol 30 (4) ◽  
pp. 537-546 ◽  
Author(s):  
P. K. C. Wang ◽  
J. T. S. Ma
Keyword(s):  
Experimental Investigation ◽  
High Speed ◽  
Close Agreement ◽  
Experimental Studies ◽  
Experimental Results ◽  
Cavity Formation ◽  
Hydraulic Actuators ◽  
Operating Modes ◽  
Analytical Work ◽  
Critical Cavitation

Results of analytical and experimental studies of cavitation in valve-controlled hydraulic actuators under various dynamic conditions are presented. The analytical work consists of deriving approximate critical cavitation conditions for various operating modes. The experimental investigation includes both a high-speed photographic study of cavity formation and tests to check the validity of the derived cavitation conditions. Close agreement between analytical and experimental results was obtained. The mechanisms governing cavity formation and cavitation effects are discussed qualitatively.

scholarly journals Intelligent Control Systems for Dynamic Mixing Processes in Seed Processing Machines with Highly Elastic Working Bodie

2020 ◽  
Vol 30 (3) ◽  
pp. 188-199
Author(s):  
Maya V. Sukhanova ◽  
Andrey V. Sukhanov ◽  
Sergey A. Voinash
Keyword(s):  
Control System ◽  
Intelligent Control ◽  
Seed Treatment ◽  
Intelligent System ◽  
Mixing Process ◽  
Mixing Processes ◽  
Seed Processing ◽  
System A ◽  
Multi Level ◽  
Sowing Seed

Introduction. The development of intelligent control systems by means of various production and technological processes is an urgent problem. Pre-sowing seed treatment is an important agricultural process, without which it is impossible to get a planned harvest of high quality. Materials and Methods. To create an intelligent system for control of seed mixing processes in seed processing machines before sowing, the technological process of pre-sowing treatment should be considered as a multi-level biotechnical system. There is a relationship between the objects of the biotechnological system in the process of pre-sowing seed treatment that can be represented in the form of a block diagram. A multi-level biotechnological system is considered as a cyber-physical system – a combination of various natural and artificial objects which is a single whole capable of self-preservation and development. Results. The components of an intelligent system for controlling dynamic mixing processes will be working memory, many fuzzy rules describing the execution of mixing operations, and a strategy for selecting rules depending on the state of the system. In developing the intelligent mixing process control system, a return strategy is implemented. The strategy of dynamic mixing system control is implemented by a direct conclusion. Discussion and Conclusion. The intelligent biotechnology control system will allow controlling the mixing process in real-time, correcting the kinematic parameters of the mixer and warning timely about the probability of damage for the elastic working element. Preliminary expert assessments and laboratory tests have shown that the use of an intelligent control system for seed treatment processes before sowing will improve the quality of the decisions made, reduce the control time of the mixing process by more than two times compared to existing control methods, reduce the physical load on the operator by 50% and increase the productivity of the mixing process by up to 20%.

Performance and Control of Liquid-Liquid Cylindrical Cyclone Separators

2002 ◽  
Author(s):  
Rajkumar Mathiravedu ◽  
Shoubo Wang ◽  
Ram S. Mohan ◽  
Ovadia Shoham ◽  
Jack D. Marrelli
Keyword(s):  
Control System ◽  
Dynamic Behavior ◽  
Control Strategy ◽  
Free Water ◽  
Water Concentration ◽  
System Dynamic ◽  
Experimental Investigations ◽  
System Sensitivity ◽  
Wide Range ◽  
Cylindrical Cyclone

The feasibility of using Liquid-Liquid Cylindrical Cyclone (LLCC©) as a free water knockout device for bulk separation of oil-water mixtures in the field strongly depends on the implementation of control systems due to its compactness, less residence time and possible inlet flow variations. In this investigation, the LLCC control dynamics have been studied extensively both theoretically and experimentally. A linear model has been developed for the first time for LLCC separators equipped with underflow watercut control, which enables simulation of the system dynamic behavior. A unique “direct” control strategy is developed and implemented, capable of obtaining clear water in the underflow line and maintaining maximum underflow rate. Dedicated control system simulations are conducted using Matlab/Simulink® software to simulate the real system dynamic behavior. Detailed experimental investigations are conducted to evaluate the system sensitivity and dynamic behavior of the proposed control strategy. The results demonstrate that the proposed control system is capable of controlling the underflow watercut around its set point by obtaining maximum free-water knockout for a wide range of flow conditions. (inlet water concentration of 40% and an inlet mixture velocity of 1.5 m/s).

Design and Simulation of Automatic Control System for Feed-Drier

2014 ◽  
Vol 548-549 ◽  
pp. 990-994
Author(s):  
Shu Yu Di ◽  
Huan Yu Chi
Keyword(s):  
Control System ◽  
Water Content ◽  
Intelligent Control ◽  
Frequency Conversion ◽  
Control Method ◽  
Experimental Studies ◽  
Drying Time ◽  
Intelligent Control System ◽  
Online Detecting ◽  
Protein Feed

Based on the research on the dynamic changes of the water content in the drying stages of using Alcohol to produce high-protein feed DDGS, advanced intelligent control method is proposed and water content in the feed and the drying time are used as the main control parameter. On the basis of one for there frequency conversion and PLC, intelligent control system for the drier fan is designed to realize the efficient control of quality online detecting and recognition in the drying process. Many problems such as low accuracy, large wastage, high cost and so on are solved and thereby the work efficiency of the drying unit is enhanced. On the basis of simulation, several test-beds were built, and a large number of experimental studies. This system proves to be the most efficient with drying and optimizing the dryer index at the different stages. The calculated results indicate that the drying method has drying efficient and energy saving features.

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