scholarly journals Design of an H∞ PI controller with given relative stability and its application to the CSTR problem

2018 ◽  
Vol 72 (3) ◽  
pp. 115-127
Author(s):  
Ljubisa Dubonjic ◽  
Vojislav Filipovic ◽  
Novak Nedic ◽  
Vladimir Djordjevic
Keyword(s):  
Relative Stability ◽  
Pi Controller ◽  
Pid Controllers ◽  
Continuous Stirred Tank Reactor ◽  
Pi Controllers ◽  
Continuous Stirred Tank ◽  
High Level ◽  
Fixed Structure ◽  
Very High ◽  
Selection Of

H? control theory has achieved a very high level, which is not followed by appropriate applications in industry. Some reasons are: synthesis of H? controllers is complex and based on the numerical Nevanlinna-Pick procedure, high order of controllers (higher than the order of the process) and sensitivity to deviation of controller coefficients (fragile controller). On the other hand, PI (PID) controllers are still dominant in industry, which places the problem of design of fixed structure controllers at the forefront. The mentioned problem is very difficult. This paper proposes a simple interactive procedure for design of H PI controllers with the presence of constraints (given the relative stability) based on D-decomposition. The catalogue of responses to references, suppression of disturbances and minimum of H? criteria of control is created. Selection of controllers, based on the catalogue, is left to the user. The application of H? PI controllers to a CSTR (continuous stirred-tank reactor) is demonstrated.

scholarly journals SELEKSI DESAIN ROOF TANK CSTR UNTUK PLANT BIOGAS POME SETARA 700KW

2020 ◽  
Vol 16 (2) ◽  
pp. 37-42
Author(s):  
Ridho Dwimansyah ◽  
Trisaksono Bagus Priambodo ◽  
Yusnitati
Keyword(s):  
Palm Oil ◽  
Biogas Production ◽  
Construction Site ◽  
Continuous Stirred Tank Reactor ◽  
Oil Processing ◽  
Continuous Stirred Tank ◽  
Palm Oil Mill ◽  
Tank Design ◽  
High Level ◽  
Dome Shape

Indonesia is the largest palm oil producer in the world. In the process of its processing into Crude PalmOil (CPO), the palm oil processing industry produces various types of waste, including liquid wasteknown as Palm Oil Mill Effluent (POME). POME contains organic matter that is high enough so it mustbe processed before being discarded into the environment. During this time, POME is treated usinganaerobic ponds which are quite large and produce metana gas. Metanae gas has a high level ofemissions, but it potential to become an energy source if it is utilized. Therefore, BPPT in collaborationwith PT. Perkebunan Nusantara 5 built a biogas production pilot plant from POME equivalent to 700kWfor boiler fuel at PKS Sei Pagar, Kampar Regency, Riau Province. The process of converting POMEinto biogas uses Continuous Stirred Tank Reactor (CSTR) technology. The research aims to choosethe best roof tank design for CSTR. The method used is the Pahl and Beitz method and the House ofQuality. The result of the study are the best specification planning data, which is 1400 mm in diameterand the construction site position at a height of 15350 mm from the bottom of the reactor, with use aninternal support column, with the best variant chosen is the fixed roof type with dome shape.

scholarly journals MULTI-LOOP CONTROL DESIGN IN MULTIVARIABLE (2X2) CONTINUOUS STIRRED TANK REACTOR

SINERGI ◽  
2015 ◽  
Vol 19 (2) ◽  
pp. 67
Author(s):  
Abdul Wahid ◽  
William Andreas Hambali
Keyword(s):  
Disturbance Rejection ◽  
Control Design ◽  
Pi Controller ◽  
Control Performance ◽  
Continuous Stirred Tank Reactor ◽  
Loop Control ◽  
Tuning Method ◽  
Continuous Stirred Tank ◽  
Better Than ◽  
Made In

With this study, the design and tuning of multi-loop for multivariable (2x2) CSTR will be made in order to achieve optimum CSTR control performance. This study used Bequette model reactor and MATLAB software and is expected to be able to cope with disturbances in the reactor so that the reactor system is able to stabilize quickly despite the distractions. In this study, the design will be made using multi-loop approach, along with PI controller as the next step. Then, BLT and auto-tune tuning method will be used in PI controller and given disturbances to both of tuning method. The controller performances are then compared. Results of the study are then analyzed for discussions and conclusions. Results from this study have shown that in terms of disturbance rejection, BLT is better than auto-tune based on comparison between both of controller performances. For IAE for the case of temperature, BLT is 30% better than auto-tune, but it is almost the same for the case of concentration. For settling time for the case of concentration, BLT is 30% better than auto-tune, and for the case of temperature, BLT is 18% better than auto-tune. For rise time for the case of concentration and temperature, BLT is 30% better than auto-tune.

Logistic step size based artificial bee colony algorithm for optimum induction motor speed control

2019 ◽  
Vol 12 ◽  
Author(s):  
Fani Bhushan Sharma ◽  
Shashi Raj Kapoor
Keyword(s):  
Induction Motor ◽  
Artificial Bee Colony ◽  
Optimization Problems ◽  
Pi Controller ◽  
Motor Speed ◽  
Step Size ◽  
Abc Algorithm ◽  
Bee Colony ◽  
Pi Controllers ◽  
Selection Of

: The disruption in the parameters of induction motor (IM) are quite frequent. In case of substantial parameter disruption the IM becomes unreliable. To deal with this complication of parameter disruption the proportional integral (PI) controllers are utilized. The selection of PI controller parameters is process dependent and any inappropriate selection of controller setting may diverge to instability. In recent years swarm intelligence (SI) based algorithms are executing well to solve real-world optimization problems. Now a days, the tuning of PI controller parameters for IM is executed using a significant SI algorithm namely, artificial bee colony (ABC) algorithm. Further, the ABC algorithm is amended based on inspiration from mathematical logistic formula. The propound algorithm is titled as logistic ABC algorithm and is applied for PI controller tuning of IM. The outcomes reveals that the propound algorithm performs better as compared to other state- of-art strategies available in the literature.

scholarly journals Analysis of Proportional Integral Derivative Controller Parameters for CSTR

2021 ◽  
Vol 16 ◽  
pp. 387-395
Author(s):  
T. Sudha
Keyword(s):  
Pid Controller ◽  
Chemical Engineering ◽  
Vital Role ◽  
Pid Controllers ◽  
Nonlinear Behaviour ◽  
Continuous Stirred Tank Reactor ◽  
Proportional Integral Derivative ◽  
Highly Nonlinear ◽  
Continuous Stirred Tank ◽  
Wide Operating

Continuous Stirred Tank Reactor (CSTR) plays a vital role and presents a various scope of researchers in the field of control and chemical engineering which exhibits of highly nonlinear behaviour and has wide operating ranges. Different control methods have been implemented on CSTR to control these parameters. Tragically, in the realcase, the behaviour of the CSTR is very different from that expected ideal CSTR which leads to the outcomes of the wrong product. However, it is a challenging task for every engineer to control the CSTR.PID controller has been proposed for adjust enhanced PID parameters in a CSTR operation utilizing a weighted mix of target capacities. Streamlining of PID controller parameters is the key objective of concoction and biochemical businesses. PID controllers have restricted the working scope of procedures with effective nonlinearity. This work considers some issues in CSTR and presents the efforts of existing researchers and it comes into view as an essential new method to adjust the control parameters. This work plans to investigate the various techniques in CSTR along with its solutions and these schemes have been surveyed in this work. This survey presents the comparison of various methods for optimizing parameters in CSTR are employed and compared with certain parameters.

Next Generation Nuclear Plant: High-Level Functions and Requirements

2004 ◽  
Author(s):  
John M. Ryskamp ◽  
Edwin A. Harvego ◽  
Soli T. Khericha ◽  
Edward J. Gorski ◽  
George A. Beitel ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Nuclear Plant ◽  
Department Of Energy ◽  
Next Generation ◽  
Very High Temperature Reactor ◽  
Environmental Laboratory ◽  
High Temperature Reactor ◽  
High Level ◽  
Very High ◽  
Selection Of

The Idaho National Engineering and Environmental Laboratory (INEEL) prepared a functions and requirements (F&R) document for the Next Generation Nuclear Plant (NGNP) Project [1] The highest-level functions and requirements for the NGNP Project design are identified in the F&R document, which establishes performance definitions to be achieved by the NGNP. The requirements for the NGNP are based on the Generation IV roadmap [2] goals. Based on these requirements, NGNP designs will be developed by commercial vendor(s). Of the six most promising Generation IV nuclear energy systems, the Very High Temperature Reactor (VHTR) is the nearest-term reactor concept that also has the capability to efficiently produce hydrogen. The U.S. Department of Energy (DOE) has selected the VHTR as the concept to demonstrate the use of nuclear power for electricity and hydrogen production without greenhouse gas emissions. This paper reviews the NGNP Project and the selection of the VHTR, then presents the NGNP functions and requirements.

Design of Controllers for Continuous Stirred Tank Reactor

2015 ◽  
Vol 5 (4) ◽  
pp. 576 ◽  
Author(s):  
Somasundaram Deepa ◽  
N. Anipriya ◽  
R. Subbulakshmy
Keyword(s):  
Fuzzy Logic ◽  
Rise Time ◽  
Performance Index ◽  
Fuzzy Logic Controller ◽  
Pi Controller ◽  
Stirred Tank ◽  
Continuous Stirred Tank Reactor ◽  
Stirred Tank Reactor ◽  
Tank Reactor ◽  
Continuous Stirred Tank

<p>The objective of the project is to design various controllers for temperature control in Continuous Stirred Tank Reactor (CSTR) systems. Initially Zeigler-Nichols, modified Zeigler-Nichols, Tyreus-Luyben, Shen-Yu and IMC based method of tuned Proportional Integral (PI) controller is designed and comparisons are made with Fuzzy Logic Controller. Simulations are carried out and responses are obtained for the above controllers. Maximum peak overshoot, Settling time, Rise time,  ISE, IAE  are chosen as performance index. From the analysis it is found that the Fuzzy Logic Controller  is a promising controller than the conventional controllers.</p>

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