Browsing by Discipline
Now showing items 21-34 of 34
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Modelling, simulation and control of nonlinear flexural-flexural-inextensional rotating beam
(2004)A continuous rotating beam that undergoes flexure about two principal axes is modelled. The beam is characterized by gyroscopic type nonlinearities. The beam is of significant importance for applications such as large ... -
Multi-time analysis of CMOS circuits
(2008)Transient simulation of circuits with widely separated time constants and fast periodic excitations is not efficient because a long simulation period with small time steps is required. One approach to simulate the transient ... -
Non-collocated control of vibration of a three-DOF structure using the electromagnetic vibration absorber
(2007)Vibration control is very important in many areas including machine operation and daily life. Semi-active vibration control integrates a tuning control scheme with a tunable vibration absorber for suppression of vibration ... -
Nonlinear controller design for a buck converter
(2006)This thesis presents five different nonlinear control techniques for voltage regulation of a DC-DC buck converter operating in continuous conduction mode. A state space averaging model is derived from a non-ideal buck ... -
Nonlinear dynamics of railway wheelsets incorporating randomness
(2007)The thesis is to investigate the dynamic behavior of a single-axle railway wheelset and identify its chaotic behavior by means of time history, phase portrait, Lyapunov exponents, information dimension, bifurcation diagram ... -
Observer-based chaos synchronization for secure communications
(2006)Chaos, with reference to chaos theory, refers to an apparent lack of order in a system that, nevertheless, obeys particular laws or rules. The chaotic signals generated by chaotic systems have some properties such as ... -
On-line optimization of thermomechanical pulping rejects screen using modified sequential simplex method
(2003)The sequential simplex method (SSM) was blended with the Nelder and Mead method to create two separate simplex methods. The first method is the Equilateral Optimum Following Simplex (EOFS). In this method, the simplex ... -
Packet scheduling for AMC-based OFDMA wireless communication systems
(2008)In this thesis, we propose a basic priority and fairness (BPF) and a modified priority and fairness (MPF) based packet scheduling algorithms for adaptive modulation and coding (AMC) scheme based orthogonal frequency division ... -
Robust and adaptive control via backstepping technique
(2005)Most of the control systems are designed using linear techniques, which have been well developed. Practical physical systems are typically nonlinear. Nonlinear control is one of the biggest challenges in modern control ... -
Robust control of DC-DC boost converter / by Hisham Mahmood.
(2008)In this thesis, a robust controller comprising of a PI with phase-lead compensator for a DC-DC boost converter designed using classical frequency response method is presented. The superior performance of this controller ... -
Study of two different tunable vibration absorbers : variable stiffness absorber and variable damping absorber
(2003)A structure or machine w ill vibrate at the frequency of excitation when excited by a harmonic force. Vibration of the structure can be suppressed using a vibration absorber by setting the absorber’s natural frequency ... -
Travelling cable system : apparatus development, system modeling, and vibration control
(2005)The vibration of axially moving materials with arbitrarily varying length has received increased attention due to both the interesting behaviours of such systems and the many applications such as deep mine hoisting ... -
Vision-based trajectory tracking algorithm with obstacle avoidance for a wheeled mobile robot
(2005)Wheeled mobile robots are becoming increasingly important in industry as means of transportation, inspection, and operation because of their efficiency and flexibility. The design of efficient algorithms for autonomous ... -
Wave reflections in a semi-infinitely long cylinder with an attached solid of revolution
(2008)A numerical procedure is presented for the study of end reflections in a semi-infinitely long isotropic circular cylinder with attached piezoelectric patch. The hybrid method which combines the finite element formulation ...