oalib
Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
Breve Compilación Metodológica para la Implementación de Controladores PID Análogos  [cached]
JIMMY ALEXANDER CORTES OSORIO,JOSé A. MURIEL ESCOBAR,JUAN CARLOS GARCIA BUITRAGO
Scientia Et Technica , 2009,
Abstract: Este articulo permite al lector apreciar una metodología sobre el como dise ar el control de posición de un servomecanismo de corriente directa (CD) y construirlo empleando amplificadores operacionales y elementos electrónicos de fácil manejo y bajo costo. El desarrollo de este articulo, esta pensado para lectores que tienen conocimientos mínimos en electrónica pero tienen conocimientos básicos de Control Automático. El controlador PID que se construirá al final del articulo es aplicable a cualquier proceso de una entrada / una salida, cuya se al de salida esté en el rango de 0 a 5 voltios de CD y la se al de entrada al proceso pueda ser una se al de 12 a +12 voltios de CD, 4 amperios
A Synthesis of Electronically Controllable Current-Mode PI, PD and PID Controllers Employing CCCDBAs  [PDF]
Somchai Srisakultiew, Montree Siripruchyanun
Circuits and Systems (CS) , 2013, DOI: 10.4236/cs.2013.43039
Abstract: This paper presents a synthesis of current-mode PI, PD and PID controllers employing current controlled current differential buffer amplifiers (CCCDBAs). The features of these controllers are that: the output parameters can be electronically/independently controlled by adjusting corresponding bias currents in the proportional, integral, and deviation controllers; circuit description of the PID controller is simply formulated, it consists of four CCCDBAs cooperating with two grounded capacitors, and PI and PD controllers are composed of three CCCCDBAs and a grounded capacitor. Without any external resistor, the proposed circuits are very suitable to develop into integrated circuit architecture. The given results from the PSpice simulation agree well with the theoretical anticipation. The approximate power consumption in a closed loop control system consisting of the PI, PD and PID controller with low-pass filter passive plant are 4.03 mW, 4.85 mW and 5.71 mW, respectively, at ±1.5 V power supply voltages.
Dise o de controladores de tipo proporcional integral derivativo (PID) y difuso para la posición de un motor de corriente continua (DC)  [PDF]
José Danilo Rairán-Antolines,Cindy Estéfany Guerrero-Cifuentes,Jaime Alfredo Mateus-Pineda
Ingeniería y Universidad , 2010,
Abstract: The performance of PID and fuzzycontrollers is compared in a commercialdevice normally used in modelairplanes: the S3004 Futaba Servo.The controller circuit, the poweramplifier and the sensor are modified,and then the motor is observed. Next,a root-locus method is used to tunea PID for angular position control.Simulations and control are made inMatlab’s Simulink, and also a dataacquisition card (PCI 6024E) is used.Results are analyzed at the end of thedocument: although the PID controllerworks better, the fuzzy controllershows a similar performance.
The design of nonlinear PID and PI attitude-controller for a flexible spacecraft
挠性航天器的非线性PID和PI姿态控制器设计

JIN Er-dong,SUN Zhao-wei,
靳尔东
,孙兆伟

控制理论与应用 , 2009,
Abstract: A model-independent nonlinear PID attitude-controller is proposed for a flexible spacecraft with model uncertainties and constant disturbances. This controller approximates to a classical linear PID controller when the attitude error is small. In addition, a nonlinear PI controller which only requires attitude measurement is also designed for the case of gyros failure. Both of the proposed controllers exhibit the disturbances rejection properties in a local region, and render the attitude control system semi-globally stable in the case of no disturbance. To solve the stability analysis problem arising from the integral term, we employ the singular perturbation theory to analyze the stability of the resulting closed-loop system. Finally, numerical simulations are included to demonstrate the performance of the presented controllers.
Dise?o de controladores de tipo proporcional integral derivativo (PID) y difuso para la posición de un motor de corriente continua (DC)
Rairán-Antolines,José Danilo; Guerrero-Cifuentes,Cindy Estéfany; Mateus-Pineda,Jaime Alfredo;
Ingeniería y Universidad , 2010,
Abstract: the performance of pid and fuzzy controllers is compared in a commercial device normally used in model airplanes: the s3004 futaba servo. the controller circuit, the power amplifier and the sensor are modified, and then the motor is observed. next, a root-locus method is used to tune a pid for angular position control. simulations and control are made in matlab's simulink, and also a data acquisition card (pci 6024e) is used. results are analyzed at the end of the document: although the pid controller works better, the fuzzy controller shows a similar performance.
Simple PI/PID Controller Tuning Rules for FOPDT Plants with Guaranteed Closed-Loop Stability Margin  [PDF]
Jan Cvejn
Acta Montanistica Slovaca , 2011,
Abstract: In the paper we present tuning rules for PI and PID controllers and the first order plus dead time (FOPDT) process model.The settings respect both performance and stability indices and provide a high degree of robustness for any value of the dead timeparameter. As the performance index we are using the well known modulus optimum criterion, which requires that the amplitudeof the closed-loop frequency response is close to one for low frequencies. This criterion produces simple tuning formulas with veryfavourable properties in time domain. Although optimal values of the parameters are valid for the reference tracking problem, acompensation of the disturbance lag that preserves the stability margin is proposed in the case of the disturbance rejection task.
Fractional control of an industrial furnace = Controle fracionário de um forno industrial
Luis Antonio Duarte Isfer,Ervin Kaminski Lenzi,Giovani Marcelo Teixeira,Marcelo Kaminski Lenzi
Acta Scientiarum : Technology , 2010,
Abstract: The requirements of high production allied with product quality, process safety and environmental regulation, lead control systems to play a key role in the operation of chemical and biochemical plants. In petrochemical plants, furnaces are essential equipments for process operation and due to energy costs, adequate operation and control are of extreme importance for process economics. The search for new and more efficient control laws led to the development of fractional PID control algorithm, which is based on the use of fractional differential equations. In this work, a previously identified mathematical model of an actual industrial furnace is used for fractional PID control studies. Feedback loop in servo control was analyzed, focusing on the study of the influence of the controller parameters over control loop performance. Particularly, P, fractional PI and fractional PD controller were considered in this study. Simulations were carried out showing that the fractional controllers were able to perform set-point transitions. The control loop performance was evaluated by ITAE and ISE criteria, showing that, in this study, fractional PI is the best algorithm. A necessidade da elevada produtividade aliada à qualidade dos produtos, seguran a dos processos e a legisla es ambientais levaram sistemas de controle a possuírem papel fundamental na opera o deplantas químicas e petroquímicas. Em plantas petroquímicas, fornos s o equipamentos fundamentais para a opera o do processo e, pelo custo da energia, a opera o e o controle adequados s o de essencial importancia para a economia do processo. A procura de novas e mais eficientes leis de controle levou ao desenvolvimento do algoritmo de controle PID fracionário, o qual é baseado no uso de equa es diferenciais de ordem fracionária. Neste trabalho, um modelo matemático previamente identificado para um forno real é utilizadopara estudos de controle fracionário. Foi analisado o problema de controle servo em malha retroalimentada (feedback), focando o estudo da influência dos parametros do controlador sobre o comportamento da malha de controle. Especificamente, controladores tipo P, PI fracionário e PD fracionário foram considerados neste estudo. Simula es foram realizadas mostrando que controladores foram capazes de fazer a transi o de setpoint. O desempenho das malhas de controle foi avaliado com os critérios ITAE e ISE, mostrando que, neste estudo, o controlador PI fracionário foi o melhor algoritmo.
挠性航天器的非线性PID和PI姿态控制器设计  [PDF]
靳尔东,孙兆伟
控制理论与应用 , 2009, DOI: 10.7641/j.issn.1000-8152.2009.5.013
Abstract: 针对存在模型不确性和常值干扰的挠性航天器,提出一种不依赖于模型参数的非线性PID姿态控制器.该控制器在小姿态偏差的情况下近似经典的线性PID控制器.另外,考虑到航天器上陀螺失效情况,设计了一种仅需姿态测量信息的非线性PI控制器.这两种控制器在局部均对常值干扰有抑制作用,并能使无干扰作用的姿态控制系统半全局渐近稳定.闭环系统的稳定性证明采用了奇异扰动理论,以解决积分项的存在带来的稳定性分析问题.文章最后用数学仿真验证了控制器的性能.
Evaluación del desempe?o de diversos controladores avanzados aplicados a un robot manipulador tipo scara
Mu?oz,Elena; Mosquera,Víctor Hugo; Gaviria,Carlos Alberto; Vivas,Oscar Andrés;
Ingeniería y Desarrollo , 2011,
Abstract: este artículo presenta una evaluación del desempe?o de varios controladores avanzados aplicados al control cartesiano de un robot manipulador de cuatro grados de libertad, tipo scara. inicialmente se expresa el modelo dinámico del robot, para posteriormente implementar en simulación diversos tipos de controladores. algunas simulaciones no están basadas en modelos como el pid; otras, en cambio, se basan en modelos como el control por par calculado, el control robusto, el control predictivo, el control pid multivariable y el control por modos deslizantes. se realiza una evaluación del desempe?o de estos controladores probando diversas trayectorias cartesianas de tipo industrial, así como sus respuestas ante perturbaciones y ante cambios en los valores de los parámetros dinámicos.
Evaluación del desempe o de diversos controladores avanzados aplicados a un robot manipulador tipo SCARA  [cached]
Elena Mu?oz,Víctor Hugo Mosquera,Carlos Alberto Gaviria,Oscar Andrés Vivas
Ingeniería y Desarrollo , 2011,
Abstract: Este artículo presenta una evaluación del desempe o de varios controladores avanzados aplicados al control cartesiano de un robot manipulador de cuatro grados de libertad, tipo SCARA. Inicialmente se expresa el modelo dinámico del robot, para posteriormente implementar en simulación diversos tipos de controladores. Algunas simulaciones no están basadas en modelos como el PID; otras, en cambio, se basan en modelos como el control por par calculado, el control robusto, el control predictivo, el control PID multivariable y el control por modos deslizantes. Se realiza una evaluación del desempe o de estos controladores probando diversas trayectorias cartesianas de tipo industrial, así como sus respuestas ante perturbaciones y ante cambios en los valores de los parámetros dinámicos.
Page 1 /100
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.