Quadruple tank process is a non-linear system, have multiple manipulated and controlled variables and have significant cross binding parameters. Furthermore, the modified system is affected by some unknown measurement...
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Quadruple tank process is a non-linear system, have multiple manipulated and controlled variables and have significant cross binding parameters. Furthermore, the modified system is affected by some unknown measurement noise and stochastic disturbance variables which make it more complicated to model and control. In this paper, a modified quadruple-tank system has been described, all the important variables has been outlined and a mathematical model has been presented. We developed deterministic and stochastic models using differential equations and simulate the models using Matlab. Subsequently, steady state analysis is included to determine the operating window for the set points. The purpose to have an operating window for the system is to distinguish the range of feasible region to select the set points for optimum operations. Therefore, in this paper a virtual process plant is created, we investigate the operating window and construct the model in an appropriate form for future controller design.
The study of brain dominance in human-computer interaction has increased in recent years in an attempt to address the need of users especially who cannot read or write. The objective of this paper is to determine the ...
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The study of brain dominance in human-computer interaction has increased in recent years in an attempt to address the need of users especially who cannot read or write. The objective of this paper is to determine the brain dominance from brainwave signal that are measured using Emotive device and to analyse the pattern of brain dominance brainwave signal by using signal processing. The result of Power Spectral Density (PSD) and Energy Spectral Density (ESD) from brainwave will be validated with Hermann Brain Dominance Instrumentation (HBDI) questionnaire. The result shows that most sample are left brain dominance. The result also shows that Beta and Delta indicate the left-brain dominance whereas Beta is indicates rightbrain dominance.
In this work, we aim to apply an adaptive Higher order sliding mode controller for trajectory tracking mode of Multi-rotor Unmanned Aerial Vehicles (UAVs) such as a Quadrotor system. The controller consists of the add...
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In this work, we aim to apply an adaptive Higher order sliding mode controller for trajectory tracking mode of Multi-rotor Unmanned Aerial Vehicles (UAVs) such as a Quadrotor system. The controller consists of the addition of two terms such as nominal term based os classical sliding mode control (SMC) and an adaptive super twisting term. We start the paper by the presentation of the Quadrotor model. Classical SMC is designed in the second step. Next, super twisting and its adaptive variant case were used to replace the discontinuous control part of the SMC for objective to chattering attenuation and performances improvement. Simulation results were presented in the trajectory tracking mode and their performances are compared with those of the STW controller.
Here we present experimental results of classification methods for brain activity in the imagination of direction. We used a wireless portable electroencephalography (EEG) headset in our preceding study to collect EEG...
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Here we present experimental results of classification methods for brain activity in the imagination of direction. We used a wireless portable electroencephalography (EEG) headset in our preceding study to collect EEG data from subjects in experiments, during which the subjects imagined arrows indicating one of the four directions: up, down, right, and left. The implemented classification methods consisted of a band-pass filter, fast Fourier transformation, principal component analysis, and neural network. We have applied neural networks with different configurations to the EEG data used in the preceding study in order to improve the classification rate. The experiments conducted in this study demonstrated some improvement results.
IPv6 addressing schemes for networks consisting of power constrained wireless sensor nodes require special consideration to reduce the time and traffic required for a node to join the network. Here we explore several ...
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IPv6 addressing schemes for networks consisting of power constrained wireless sensor nodes require special consideration to reduce the time and traffic required for a node to join the network. Here we explore several existing models of IPv6 address allocation schemes for this use case. We offer a novel approach to reduce the chance of address duplication via a hierarchical manipulation of the host portion of the IPv6 address space, which represents each segment of the network leaving nodes a large segment of address space to generate a unique identifier portion. Overhead is further reduced though the application of a Passive Duplicate Address Detection scheme, which allows nodes to configure an address but postpone duplication check until traffic traverses the network and is sent out through the gateway.
Gantry Crane system is widely used for material transportation. In this system, uncontrolled oscillation always be found during the moving process. This problem may extend the carrying time and cause safety problem. I...
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Gantry Crane system is widely used for material transportation. In this system, uncontrolled oscillation always be found during the moving process. This problem may extend the carrying time and cause safety problem. In this paper, it presents a method for controlling a Gantry Crane system based on Proportional-Integral-Derivative (PID) controller strategy. A combination of the Priority Fitness Scheme and Particle Swarm Optimization (PFPSO) is used to optimize the parameters of PID and PD controller (K P , K I , K D , K PS and K DS ). A disturbance rejection control technique in which PID controller is employed to control accurately and robustly the trolley along a desired position with the minimize payload oscillation. Results from the simulation study clearly show that PID controller is a robust controller as a disturbance rejection and able to move the trolley to a desired position with minimize payload oscillation.
As for the synchronization control of dual winches of large crawler cranes,a master-slave PI control algorithm with the hook's inclination as feedback signal is proposed and *** transfer function of the pump-contr...
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As for the synchronization control of dual winches of large crawler cranes,a master-slave PI control algorithm with the hook's inclination as feedback signal is proposed and *** transfer function of the pump-controlled dual-winch system is obtained by building the mathematical model and linearizing it around the working point and thus the stability can be *** way to determine the parameters of PI controller is proposed via frequency response *** research indicates that the proposed control algorithm is able to guarantee the steady-state error to be zero and that the stability of the whole system depends on the stability of the hydraulic subsystem and the actuator ***,the stability of the hydraulic system can be ensured by increasing leakage and the stability of the actuator can be improved through PI controller.
Real-time surveillance is a vital component in any situation or environment where there is a high need of security for both personal and commercial property and assets. Technology today is used in many different ways ...
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Real-time surveillance is a vital component in any situation or environment where there is a high need of security for both personal and commercial property and assets. Technology today is used in many different ways in order to provide us such surveillance. An ideal solution for surveillance involves not only the assortment of necessary sensors and devices using appropriate tools, but also should be provided in the most optimized way for obtaining feed and data while keeping the expenditure minimized. In our project, we aimed at developing a low-cost, real-time video surveillance mini-rover which will be capable of providing real-time video footage and roam around in the area which we want to observe. Our target was to use hardware which is very low of cost and easily available.
Unidirectional proportional pump-controlled asymmetric cylinder systems are widely used on industry machines,but the analysis and synthesis of such systems is very hard due to the nonlinearity caused by the different ...
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Unidirectional proportional pump-controlled asymmetric cylinder systems are widely used on industry machines,but the analysis and synthesis of such systems is very hard due to the nonlinearity caused by the different working areas of cylinder *** limit of one-way flow control ability of the pump and the working pressure make the problem more *** is very hard to find an effective method to solve this problem with the existing theory of electro-hydraulic servo *** simplify the analysis and realize the no overshooting position control,this paper presents a third order state-space model with input and output constraints to depict the dynamic behavior of the system.A specially designed model predictive controller is used to guarantee that the output of the system has no *** results of the simulation experiments show that the proposed method can realize the high precision position control under multiple constraints effectively.
This paper is concerned with the iterative learning control(ILC) design problem of linear discrete-time systems with iteration-varying initial state and packet ***,the iteration-varying initial state and the packet lo...
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ISBN:
(纸本)9781467397155
This paper is concerned with the iterative learning control(ILC) design problem of linear discrete-time systems with iteration-varying initial state and packet ***,the iteration-varying initial state and the packet loss is introduced into the ILC *** addition,the ILC design problem is transformed into a controller design problem of2-D Roesser ***,the asymptotic stability of 2-D Roesser models under orthogonal initial states are ***,based on the 2-D asymptotic stability,a ILC algorithm is proposed to deal with the iteration-varying initial state and the packet ***,the effectiveness of the developed ILC algorithm is demonstrated by a simple example with various packet loss rate.
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