scholarly journals Implementation of PI and MPC-Based Speed Controllers for a Drive with Elastic Coupling on a PLC Controller

Electronics ◽  
2021 ◽  
Vol 10 (24) ◽  
pp. 3139
Author(s):  
Piotr Serkies ◽  
Adam Gorla
Keyword(s):  
Programming Languages ◽  
Pi Controller ◽  
Elastic Coupling ◽  
Control Structures ◽  
Drive Control ◽  
Advanced Control ◽  
Predictive Controller ◽  
Compact Design ◽  
Signal Processors ◽  
Additional Feedback

This paper presents some of the issues related to the implementation of advanced control structures (PI controller with additional feedback, Model Predictive Controller) for drives with elastic coupling on a programmable logic controller (PLC). The predominant solutions to electric drive control include the use of rapid prototyping cards, signal processors or programmable matrices. Originally, PLC controllers were used to automate sequential processes, but for several years now, a trend related to their implementation for advanced control objects can be observed. This is mainly due to their compact design, immunity to disturbances and standard programming languages. The following chapters of the paper present the mathematical model of the drive and describe the implementation of the proposed control structures. A PI controller with additional feedback loops and a predictive controller are taken into consideration. Their impact on the CPU load was analysed, and the work was summarised by a comprehensive experimental study. The presented results confirm that it is possible to implement advanced control structures on a PLC controller for drives with elastic coupling while maintaining a sufficiently low load on its CPU.

Comparison Performances of Indirect Field Oriented Control for Three-Phase Induction Motor Drives

2017 ◽  
Vol 8 (4) ◽  
pp. 1682
Author(s):  
Hasif Aziri ◽  
Fizatul Aini Patakor ◽  
Marizan Sulaiman ◽  
Zulhisyam Salleh
Keyword(s):  
Induction Motor ◽  
Load Condition ◽  
Power Converter ◽  
Pi Controller ◽  
Motor Drives ◽  
Field Oriented Control ◽  
Induction Motor Drives ◽  
Drive Control ◽  
Three Phase ◽  
Indirect Field Oriented Control

<span>This paper presents the comparative performances of Indirect Field Oriented Control (IFOC) for the three-phase induction motor. Recently, the interest of widely used the induction motor at industries because of reliability, ruggedness and almost free in maintenance. Thus, the IFOC scheme is employed to control the speed of induction motor. Therefore, P and PI controllers based on IFOC approach are analyzed at differences speed commands with no load condition. On the other hand, the PI controller is tuned based on Ziegler-Nichols method by using PSIM software which is user-friendly for simulations, design and analysis of motor drive, control loop and the power converter in power electronics studies. Subsequently, the simulated of P controller results are compared with the simulated of PI controller results at difference speed commands with no load condition. Finally, the simulated results of speed controllers are compared with the experimental results in order to explore the performances of speed responses by using IFOC scheme for three-phase induction motor drives.</span>

scholarly journals Model Predictive Engine Air-Ratio Control Using Online Sequential Relevance Vector Machine

2012 ◽  
Vol 2012 ◽  
pp. 1-15 ◽  
Author(s):  
Hang-cheong Wong ◽  
Pak-kin Wong ◽  
Chi-man Vong
Keyword(s):  
Support Vector Machine ◽  
Relevance Vector Machine ◽  
Pi Controller ◽  
Support Vector ◽  
Machine Model ◽  
Predictive Controller ◽  
Fuel Consumption And Emissions ◽  
Modelling Methods ◽  
Engine Power

Engine power, brake-specific fuel consumption, and emissions relate closely to air ratio (i.e., lambda) among all the engine variables. An accurate and adaptive model for lambda prediction is essential to effective lambda control for long term. This paper utilizes an emerging technique, relevance vector machine (RVM), to build a reliable time-dependent lambda model which can be continually updated whenever a sample is added to, or removed from, the estimated lambda model. The paper also presents a new model predictive control (MPC) algorithm for air-ratio regulation based on RVM. This study shows that the accuracy, training, and updating time of the RVM model are superior to the latest modelling methods, such as diagonal recurrent neural network (DRNN) and decremental least-squares support vector machine (DLSSVM). Moreover, the control algorithm has been implemented on a real car to test. Experimental results reveal that the control performance of the proposed relevance vector machine model predictive controller (RVMMPC) is also superior to DRNNMPC, support vector machine-based MPC, and conventional proportional-integral (PI) controller in production cars. Therefore, the proposed RVMMPC is a promising scheme to replace conventional PI controller for engine air-ratio control.

scholarly journals An Advanced Control and Extensible Configuration for Static Var Generator

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Chao Zhang ◽  
Aimin Zhang ◽  
Ying Cui ◽  
Tao Wen
Keyword(s):  
Disturbance Rejection ◽  
Reactive Power ◽  
Dynamic Performance ◽  
Fast Response ◽  
Pi Controller ◽  
Disturbance Rejection Control ◽  
Power Modules ◽  
Advanced Control ◽  
Static Var Generator ◽  
Transient And Steady State

An extensible configuration is proposed for static var generator (SVG) with advanced controller included for reactive power compensation of grid. Compared with the traditional configurations, the major advantage of such system configuration is that the power modules are very flexible and easy to extend or reduce without changing the main equipment of SVG under the different voltage levels. Furthermore, in order to solve the problems of modeling uncertainty, nonlinearities, and outside disturbance by using proportion integration (PI) controller, an advanced controller is proposed based on auto disturbance rejection control (ADRC). By controlling the amount and direction of reactive current, the reactive power is generated or absorbed from SVG into power grid with fast response, which can realize the excellent dynamic compensation for both the internal and external interferences. Simulations results show that the proposed controller has better performance of the transient and steady state than PI controller. Moreover, the verification tests are executed in 380 V, 6.5 kVA experiment systems, suggesting that the excellent dynamic performance and strong robustness are achieved.

An Adaptive Model Following Control for Robotic Manipulators

1983 ◽  
Vol 105 (3) ◽  
pp. 143-151 ◽  
Author(s):  
A. Balestrino ◽  
G. De Maria ◽  
L. Sciavicco
Keyword(s):  
Reference Model ◽  
Design Procedure ◽  
Pulse Amplitude ◽  
Robotic Manipulators ◽  
Adaptive Model ◽  
Control Structures ◽  
Model Following Control ◽  
Model Following ◽  
Advanced Control ◽  
Hyperstability Theory

The increased demand on robotic manipulator performances leads to the use of advanced control structures. An adaptive model following control system for robotic manipulators is developed via hyperstability theory. A new control algorithm is proposed that produces a discontinuous control signal, similar to a pulse amplitude signal, so that particular trajectories, referred as sliding modes, occur. The design procedure is simple and effective and always assures the asymptotic stability in the large. The decoupling properties can be achieved by a suitable choice of the reference model. A case study is developed by numerical simulation.

scholarly journals Hybridization of IMC and PID Control Structures from Filtered Positional Generalized Predictive Controller

2016 ◽  
Author(s):  
Rejane De Barros Araújo ◽  
Daniel Cavalcanti Jeronymo ◽  
Antonio Rodrigues Coelho
Keyword(s):  
Pid Control ◽  
Control Structures ◽  
Predictive Controller

scholarly journals VISUAL-GRAPHIC PROGRAMMING SYSTEM BASED ON DEVELOPMENT OF BLOCK DIAGRAMS OF ALGORITHMS. CONVERTING PROGRAMS TEXTS IN DIFFERENT PROGRAMMING LANGUAGES INTO BLOCK DIAGRAMS AND BACK

2021 ◽  
pp. 49-57
Author(s):  
А.А. Вохмин ◽  
О.А. Евдокимова ◽  
А.А. Малявко
Keyword(s):  
Programming Languages ◽  
Graphic Design ◽  
Graphical Representation ◽  
Internal Representation ◽  
Program Text ◽  
Programming System ◽  
Control Structures ◽  
Graphic Editor ◽  
Textual Representation ◽  
Visual Graphic

В работе представлены результаты исследований и разработки средств визуально-графического проектирования сложных алгоритмов в виде блок-схем в целом и, в частности, интерфейсной компоненты таких средств – конвертора текстов программ на различных языках программирования во внутреннее структурно-вложенное представление и обратно в тексты. Визуально-графическое представление алгоритмов лучше воспринимается человеком-разработчиком, чем традиционное текстовое представление, поэтому развитию подобных систем программирования в последнее время уделяется определенное внимание. Однако реализация максимально удобных для человека технологий создания и редактирования блок-схем сопряжена с необходимостью решения ряда сложных задач формирования и адекватного отображения управляющих структур, используемых в популярных языках программирования. Проведен анализ таких структур для наиболее популярных по разным метрикам языков программирования, представлены его результаты и предложен способ выявления и преобразования управляющих структур во внутреннее представление визуально-графического редактора. Описаны основные алгоритмы работы конвертора текстов программ как в прямом, так и в обратном направлениях. The paper presents the results of research and development of tools for visual and graphic design of complex algorithms in the form of block diagrams in general and, in particular, the interface component of such tools - a converter of programs texts in various programming languages ​​into an internal structurally nested representation and back into texts. The visual-graphical representation of algorithms is better perceived by a human developer than the traditional textual representation, therefore, some attention has been paid to the development of such programming systems in recent years. However, the implementation of the most human-friendly technologies for creating and editing block diagrams is associated with the need to solve a number of complex problems of forming and adequately displaying control structures used in popular programming languages. The analysis of such structures for the most popular programming languages ​​in terms of various metrics is carried out, its results are presented, and a method for identifying and transforming control structures into an internal representation of a visual-graphic editor is proposed. The main algorithms for the operation of the program text converter both in forward and backward directions are described.

Modelling, control and supervisory optimization of generalized predictive control in catalytic cracking reactor

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mythily Mani ◽  
Manamalli Deivasigamani ◽  
Rames Chandra Panda ◽  
Raja Nandhini Ramasami
Keyword(s):  
Predictive Control ◽  
Catalytic Cracking ◽  
Pi Controller ◽  
Generalized Predictive Control ◽  
Yield Model ◽  
Yield Optimization ◽  
Gasoline Demand ◽  
Fluidized Catalytic Cracking ◽  
Pi Controllers ◽  
Predictive Controller

Abstract As gasoline demand increases, the efficiency of operation of Fluidized Catalytic Cracking Unit (FCCU) becomes paramount importance. In this paper, a dynamic model for FCCU is simulated and integrated with yield model in order to estimate the yield of products namely gasoline, light gases and coke. Conventional PI controllers are designed for the control of reactor and regenerator temperature. Since, the complete reaction occurs in a very short duration, the controllers are tuned so as to achieve shorter settling time and minimum overshot. Further in order to increase the yield, optimization of FCCU using Generalized Predictive Controller (GPC) at supervisory level is attempted. Through optimization of objective function, the GPC will provide optimized set point for the PI controller in order to maintain maximum gasoline yield.

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