33 research outputs found
Comparison of PID and MPC controllers for continuous stirred tank reactor (CSTR) concentration control
Continuous Stirred Tank Reactor (CSTR) is amajorarea in process, chemical and control engineering. In this paper, PID
and MPC controllers are designed for CSTR in order to analyze the output concentration of the system by comparing
the two proposed systems using Matlab/Simulink. Comparison have been made using two desired concentration input
(Random reference and step) signals with and without input side disturbance (Flow rate error). The simulation result
shows that the continuous stirred tank reactor with MPC controller have better response in minimizing the overshoot
and tracking the desired concentration for the system without input disturbance and with the effect of the disturbance
makes the continuous stirred tank reactor with MPC controller output with small fluctuations and still better than the
continuous stirred tank reactor with PID controller. Finally the comparative analysis and simulation results prove the
effectiveness of the continuous stirred tank reactor with MPC controller
Comparison of Neural Network Based Controllers for Nonlinear EMS Magnetic Levitation Train
Magnetic levitation system is operated primarily based at the principle of magnetic attraction and repulsion to
levitate the passengers and the train. However, magnetic levitation trains are rather nonlinear and open loop
unstable which makes it hard to govern. In this paper, investigation, design and control of a nonlinear Maglev train
based on NARMA-L2, model reference and predictive controllers. The response of the Maglev train with the
proposed controllers for the precise role of a Magnetic levitation machine have been as compared for a step input
signal. The simulation consequences prove that the Maglev teach system with NARMA-L2 controller suggests the
quality performance in adjusting the precise function of the system and the device improves the experience
consolation and street managing criteria
State and disturbance estimation of a linear systems using proportional integral observer
This paper offers a short survey of linear systems Proportional-Integral-Observer design. This observer has the capacity
to estimate simultaneously the states and unknown inputs which include disturbances or model uncertainties appearing
on the system. The design of state and output estimation using PO and state, output and disturbance estimation using
PIO is done using Matlab/Simulink successfully. The simulation is done for estimating using PO and PIO and the
results proved that estimates the state variables and output correctly when there is no disturbance in the plant and there
is a constant steady-state error in estimation after leading a constant disturbance into the plant for both state variables
and plant output for the Proportional Observer and there is ability to estimate state variables, disturbance and system
output correctly with or without the disturbance in plant for the Proportional Integral Observer
Design and Control of EMS Magnetic Levitation Train using Fuzzy MRAS and PID Controllers
In this paper, a Magnetic Levitation (MAGLEV) train is designed with a first degree of freedom electromagnetbased totally system that permits to levitate vertically up and down. Fuzzy logic, PID and MRAS controllers are
used to improve the Magnetic Levitation train passenger comfort and road handling. A Matlab Simulink model is
used to compare the performance of the three controllers using step input signals. The stability of the Magnetic
Levitation train is analyzed using root locus technique. Controller output response for different time period and
change of air gap with different time period is analyzed for the three controllers. Finally the comparative simulation
and experimental results demonstrate the effectiveness of the presented fuzzy logic controller
Performance Investigation of AC Servomotor Position Control using Fuzzy Logic and Observer Based Controllers
An AC servomotor which is mostly a two-phase induction motor with two stator field coils placed 90
electrical degrees apart used for controlling position, speed and acceleration in manufacturing industries. In this
paper, a two-phase induction motor has been designed with a fuzzy logic and observer based controllers to improve
the performance of the system. Comparison of the AC servomotor with the proposed controllers for tracking a step
and a square desired position signal input has been done using Matlab/Simulink toolbox and a promising result
obtained
Comparison of Neural Network NARMA-L2 Model Reference and Predictive Controllers for Electromagnetic Space Vehicle Suspension System
Electromagnetic Suspension System (EMS) is
mostly used in the field of high-speed vehicle. In this
study, a space exploring vehicle quarter electromagnetic
suspension system is modelled, designed and simulated
using Neural network-based control problem.
NARMA-L2, Model reference and predictive controllers
are designed to improve the body travel of the vehicle
using bump road profile. Comparison between the
proposed controllers is done and a promising simulation
result have been analyzed
Nonlinear Active Suspension System Control using Fuzzy Model Predictive Controller
Recent years, active suspension system has
been widely used in automobiles to improve the road
holding ability and the riding comfort. This study presents
a new fuzzy model predictive control for a nonlinear
quarter car active suspension system. A nonlinear
dynamical model of active suspension is established,
where the nonlinear dynamical characteristic of the spring
and damper are considered. Based on the proposed fuzzy
model predictive control method is presented to stabilize
the displacement of the active suspension in the presence
of different road profiles. Parameters of the model
predictive and fuzzy logic control laws are designed to
estimate the (Bump and Sinusoidal)road profile input in
the active suspension. At last, the reliability of the fuzzy
model predictive control method is evaluated by the
MATLAB simulation tool. Simulation result shows that
the fuzzy model predictive control method obtained the
satisfactory control performance for the active suspension
system
Loudspeaker Noise Disturbance Control using Optimal and Robust Controllers
Noise reduction is the major issue in the
loudspeaker for the application of the musical instruments
and related areas. In this study, a noise disturbance control
of a loudspeaker with optimal and robust controllers has
been done successfully. The noise of the loudspeaker has
been analyzed by simply track a reference cone
displacement with the actual cone displacement. Static
output feedback and H4 optimal loop shaping controllers
have been used to compare the actual and reference cone
displacements by using a sine wave and random cone
displacement signals and a promising results have been
analyzed
Inverted Pendulum Control using NARMA-l2 with Resilient Backpropagation and Levenberg Marquardt Backpropagation Training Algorithm
In this study, the performance of inverted
pendulum has been Investigated using neural network
control theory. The proposed controllers used in this study
are NARMA-L2 with Resilient backpropagation and
Levenberg Marquardt backpropagation algorithm
controllers. The mathematical model of Inverted
Pendulum on a Cart driving mechanism have been done
successfully. Comparison of an inverted pendulum with
NARMA-L2 with Resilient backpropagation and
Levenberg Marquardt backpropagation algorithm
controllers for a control target deviation of an angle from
vertical of the inverted pendulum using two input signals
(step and random). The simulation result shows that the
inverted pendulum with NARMA-L2 with resilient
backpropagation controller to have a small rise time,
settling time and percentage overshoot in the step
response and having a good response in the random
response too. Finally, the inverted pendulum with with
NARMA-L2 with resilient backpropagation controller
shows the best performance in the overall simulation
result
INTELLIGENT LIQUID LEVEL CONTROL OF A COUPLED NONLINEAR THREE TANK SYSTEM SUBJECTED TO VARIABLE FLOW PARAMETERS
In this paper, an intelligent control system technique is proposed to model and control of a nonlinear coupled three tank system. Two pumps fed the tank 1 and tank 2 and a fractional flow of these two pumps fed tank 3. The main aim of this paper is to make a set point tracking experiments of the tanks level using a nonlinear autoregressive moving average L-2 (NARMA L-2) and neural network predictive controllers. The proposed controllers are designed with the same neural network architecture and algorithm. Comparison of the system with the proposed controllers for tracking a step and random level set points for a fixed and variable flow parameter and some good results have been obtained