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3 axis CNC machine controllers
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PC based Kenwood TS-570D transceiver controller
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Realization Of Real-Time Hardware-In-The-Loop For A Liquid Level With Open-Loop Ziegler Nichols Technique
Published 2018“…This paper presents the realization of a real-time hardware-in-the-loop (HIL) for a liquid level control system.Multifarious controllers that were proposed in the previous literature are constrained within simulation platform.Several advanced control configurations are implemented in the hard-wire platform that incurs complex programming and requires computational burden.These kind of control configurations do not permit the operator to tune the control parameter online.Moreover,the parameters inside the microcontroller are unobservable to the operators.As such,the need to implement a real-time HIL for a liquid level control system worthwhile to the operators.It gives intuitive configuration and user-friendly application to the operators because the tuning process can be implemented in didactic manner. …”
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MULTI-PURPOSE VOICE ACTIVATED CONTROLLER
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Final Year Project -
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Photovoltaic charge controller
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Undergraduates Project Papers -
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Development of traffic light control system using programmable logic controller
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Undergraduates Project Papers -
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Position control of arm mechanism using PID controller
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Development of three phase induction motor controller
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Undergraduates Project Papers -
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SYSTEMATIC DESIGN OF SIMPLY STRUCTURED COMPENSATOR
Published 2005“…Recently, it has been revealed the possibility that the fine-tuning method based on Nyquist Stability Criterion has the potential to output a satisfactory closed-loop performance for a given continuous, linear system model. …”
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Final Year Project -
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'Bit-level non-destructive arbitration ofCAN controllers'
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Final Year Project -
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Design of Active Suspension using Robust PID Controller
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Final Year Project -
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Development of laser cutting and engraving machine utilising PC-NC controller
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Research Report -
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Filter And Observer Design For Polynomial Discrete-Time Systems: A Sum Of Squares Based Approach
Published 2018“…The polynomial discrete-time systems are the type of systems where the dynamics of the systems are described in polynomial forms.This system is classified as an important class of nonlinear systems due to the fact that many nonlinear systems can be modelled as,transformed into,or approximated by polynomial systems.The focus of this thesis is to address the problem of filter and observer design for polynomial discrete-time systems.The main reason for focusing on this area is because the filter and observer design for such polynomial discrete-time systems is categorised as a difficult problem.This is due to the fact that the relation between the Lyapunov matrix and the filter and observer gain is not jointly convex when the parameter-dependent or state-dependent Lyapunov function is under consideration.Therefore the problem cannot possibly be solved via semidefinite programming (SDP).In light of the aforementioned problem, we establish novel methodologies of designing filters for estimating the state of the systems both with and without H∞ performance and also designing an observer for state estimation and also as a controller.We show that through our proposed methodologies,a less conservative design procedure can be rendered for the filter and observer design.In particular,a so-called integrator method is proposed in this research work where an integrator is incorporated into the filter and observer structures.In doing so, the original systems can be transformed into augmented systems.Furthermore,the state-dependent function is selected in a way that its matrix is dependent only upon the original system state.Through this selection,a convex solution to the filter and observer design can be obtained efficiently.The existence of such filter and observer are given in terms of the solvability of polynomial matrix inequalities (PMIs).The problem is then formulated as sum of squares (SOS) constraints,therefore it can be solved by any SOS solvers.In this research work,SOSTOOLS is used as a SOS solver.Finally,to demonstrate the effectiveness and advantages of the proposed design methodologies in this thesis,numerical examples are given in filter design system.The simulation results show that the proposed design methodologies can estimate and stabilise the systems and achieve the prescribed performance requirements.…”
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Thesis -
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Performance Of Multilevel Inverters For Harmonic Reduction In Dynamic Voltage Restorer Application
Published 2018“…Multilevel inverters are known for their intial usage in high-voltage and high-power applications.This thesis presents the analysis and design of the Three-Phase Cascaded H-Bridge Multilevel Inverters (CHB-MLI) for three and five levels based on Newton-Raphson technique for harmonic reduction in Dynamic Voltage Restorer (DVR) application.The performance of the inverter outputs to reduce harmonics is crucial for DVR applications.Two DC sources were applied for two types of CHB-MLI.These types of inverters used Newton-Raphson method as their controllers.The main aim of this thesis is to design, model,construct,and conduct laboratory testing upon CHB-MLI of a three and five levels prototype for DVR application.The design of suitable multilevel inverters is very important for DVR purposes,so that the AC output voltage waveforms of the inverters have low content of harmonics during energy conversion process from DC to AC of the proposed inverters.The Digital Signal Processing (DSP) TMS320F2812 was used as a tool in order to create the coding based on the Newton-Raphson technique controller.The coding was developed,and then stored into the Digital Signal Processing (DSP) TMS320F2812 for output processing of the waveform of the inverters.The proposed controller using Newton-Raphson technique was applied to both three and five level of CHB-MLI.The optimization of this system has managed to reduce the harmonic contents of the inverters output.The performance of the developed prototype was tested using source codes of the programming for optimization technique.The experimental results of the developed prototype for both three and five levels were monitored and analysed.In addition,the performance of the proposed system was compared between simulation and experimental results for the optimization technique.The simulation and experimental results had shown the effectiveness of the proposed system in reducing harmonic.The waveforms in term of current and voltage were smooth and contain low contents of harmonic.Types of waveforms for five level of CHB-MLI which were more suitable to be used in the DVR applications.…”
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Thesis