N. K. Poon, Senior Member, C. K. Tse
Abstract—A new converter topology is described for applications requiring very low output current ripple. The proposed converter consists of two asymmetric half-bridge converters whose output...
Adaptable Routing Strategy in Traffic Flow (2009)
Takayuki Kimura, Tohru Ikeguchi, C. K. Tse
Abstract—To avoid congestion of the vehicle in traffic networks is one of the most important problems to establish effective movements of vehicles. In this paper, we propose a new routing strategy...
C. K. Tse, N. K. Poon, M. H. Pong, Y. M. Lai
of general impedance with simple dc/dc converters for power processing applications
Efficient Routing Strategy in Traffic Flow (2009)
Takayuki Kimura, Tohru Ikeguchi, C. K. Tse
Abstract—To alleviate congestion in traffic networks is one of the most important problems to establish effective movements of vehicles. In this paper, we propose a new routing strategy using a...
APWCCS04 Multiple Access Scheme for Noncoherent Chaos-Based Communication Systems (2008)
Noncoherent detection schemes for chaos-based communication systems can be broadly categorized into two types. For the first type of noncoherent systems, a reference chaotic signal is transmitted to...
The Chaos Panaceas Keynote Address (2008)
Abstract — In this talk we review the work in the field of chaos applications, especially in the formulation of solutions for practical engineering problems. Using a few case studies we illustrate...
STABILITY ANALYSIS OF POWER CIRCUIT COMPRISING VIRTUAL INDUCTANCE (2008)
O. Dranga, H. Funato, S. Ogasawara, C. K. Tse
The concept of a variable active-passive reactance (VAPAR), which can generate a virtual variable inductance in power circuits, including negative values, has already been proposed. Since it has...
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS (2008)
C. K. Tse, Y. M. Lai, R. J. Xie
Application of duality principle to synthesis of single-stage power-factor-correction voltage regulators
NOVEL D 2 T CONTROL FOR SINGLE-SWITCH DUAL-OUTPUT SWITCHING POWER CONVERTERS (2008)
C. K. Tse, S. C. Wong, K. C. Tam
A method for programming current in dc/dc converters operating in discontinuous conduction mode is described in this paper. The control variable is the product of the square of the duty cyle and the...
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS (2008)
Published Wiley, Interscience Doi, K. C. Tam, S. C. Wong, C. K. Tse
A wavelet-based piecewise approach for steady-state analysis of power electronics circuits
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS (2008)
C. K. Tse, V. Pjevalica, Y. M. Lai
This paper describes the bifurcation phenomena of a system of parallel-connected d.c.=d.c. boost converters. The results provide important information for the design of stable current sharing in a...
S. C. Wong, C. K. Tse, K. C. Tam
In this paper, we explain the mechanism that causes “intermittent” instability and chaos in a current-mode controlled switching converter. The circuit model used to study the phenomenon...
Multimedia Based E-learning Tools for Dynamic Modeling (2008)
J. Hamar, H. Funato, S. Ogasawara, O. Dranga, C. K. Tse
Abstract – Exploiting the recent achievements of the information and communication technologies, a new e-learning initiation entitled Yoto project was launched in 2004. On longer run its most...
DETERMINISTIC DYNAMICS IN FINANCIAL INDICATORS? (2008)
We show that standard financial indicators may not be adequately described with linear stochastic methods. The data are consistent with what one would observe when the underlying system exhibits low...
Optimum Design for Correlator-Type Receivers in Chaos-Based Digital Communication Systems (2008)
C. K. Tse, W. M. Tam, S. F. Hau
Abstract — In chaos-based digital communication systems, a correlator is normally used in the coherent detection of the signal. In this paper, an optimum design for such correlatortype receivers is...
An Approach for CSK Detection Based on Return Maps (2008)
C. K. Tse, K. Y. Cheong, S. F. Hau
Abstract — Chaos-based communication can be applied advantageously only if the property of chaotic systems is suitably exploited. In this paper a simple non-coherent detection method for...
Dual Current-Mode Control for Single-Switch Two-Output Switching Power Converters (2008)
S. C. Wong, C. K. Tse, K. C. Tang
Abstract — A novel method for programming current in dc/dc converters operating in discontinuous conduction mode is described in this paper. The control variable is the product of the square of the...
Analytical BERs of Coherent CSK and Noncoherent DCSK Systems with Multiple Users (2008)
W. M. Tam, C. K. Tse, S. F. Hau
Abstract — Several chaos-based digital communication schemes have been proposed in recent years. Unlike conventional modulation systems where analytical bit error rates (BERs) can be found given a...
Techniques for Input Ripple Current Cancellation: Classification and Implementation (2008)
N. K. Poon, C. K. Tse, Senior Member, M. H. Pong, Senior Member
Abstract—Switching power supplies, due to their high-frequency switching operation, draw a substantial amount of input ripple current. Such ripple current manifests itself as electromagnetic...
Via Period-doubling, C. K. Tse
Period-doubling routes to chaos in dc/dc converters operating in discontinuous mode have been reported in Reference 1 for the boost-type converter, and in Reference 2 for the buck-type converter. The...
LETTER TO THE EDITOR IMPLEMENTING EXTRA ELEMENT THEOREM USING NULLOR APPROACH (2007)
This letter presents a method of implementing the extra element theorem (EET) on the computer by using the nullor method. The EET involves the calculation of two driving-point impedances (dpi’s),...
This paper studies the bifurcation paths exhibited by a DC=DC buck switching regulator under current-programmed control. Previous studies with the boost converter and the Cuk converter have shown...
A Study of Synchronization in Chaotic Autonomous Ćuk DC/DC Converters (2007)
Abstract—The synchronization property of chaotic free-running dc/dc converters is studied in this paper. The system under study consists of two Ćuk converters operating under free-running...
3.6. The Method of Schwarzian Derivatives 1 3.6 The Method of Schwarzian Derivatives (2007)
The essential operation that characterizes most power electronics circuits is the cyclic switching of the circuit conguration from one linear system to another. Such periodic switching operation...
Iu, H. H. C., Tse, C. K., Dranga, O.
This paper studies a single buck converter and a system of parallel-connected dc/dc buck converters under current-mode control. The effects of variations of the reference current are studied. It has...
Iu, H. H. C., Tse, C. K., Dranga, O.
This paper studies a single buck converter and a system of parallel-connected dc/dc buck converters under current-mode control. The effects of variations of the reference current are studied. It has...
Iu, H. H. C., Tse, C. K., Dranga, O.
This paper studies a single buck converter and a system of parallel-connected dc/dc buck converters under current-mode control. The effects of variations of the reference current are studied. It has...
Physica D 194 (2004) 283–296 Optimal embedding parameters: a modelling paradigm (2004)
The reconstruction of a dynamical system from a time series requires the selection of two parameters: the embedding dimension de and the embedding lag τ. Many competing criteria to select these...
Circuit theory of power factor correction in switching converters (2003)
This paper discusses the circuit theory aspects of power factor correction in switching converter circuits. The discussion begins with an examination of the requirement of power factor correction in...
S. C. Wong, C. K. Tse, K. C. Tam
In the process of designing and constructing switching power converters, chaotic operations are often observed intermittently between long periods of regular operations. In practice, such...
Intermittent chaos in switching power supplies due to unintended coupling of spurious signals (2003)
C. K. Tse, Yufei Zhou, S. S. Qiu
Abstract — This paper studies the “intermittent ” chaos and subharmonics observed in switching dc/dc converters using a simple circuit model that describes possible unintended coupling of some...
A multiple access technique for differential chaos shift keying (2002)
M. M. Yip, C. K. Tse, S. F. Hau
Various chaos-based digital communications techniques have been proposed recently. Among them, differential chaos shift keying (DCSK) allows the receiving end to decode the signal using noncoherent...
Detecting determinism in time series data: When should we bother to build models (2002)
Nonlinear modeling routines are often applied in an effort to extract underlying determinism from time series data. The best of these methods perform well for short noisy time series when there is...
W. M. Tam, C. K. Tse, Senior Member, M. M. Yip
Abstract—Assuming ideal synchronization at the receivers, an approach to calculating the approximate theoretical bit-error rate (BER) of a coherent chaos-shift-keying (CSK) digital communication...
Return-mapbased approaches for noncoherent detection in chaotic digital communications (2002)
C. K. Tse, K. Y. Cheong, S. F. Hau
Abstract—In this brief, simple noncoherent detection methods for chaosshift-keying (CSK) modulation are proposed. By exploiting some deterministic property of the two chaotic maps, the proposed...
Bifurcation behavior in parallel-connected boost converters (2001)
Abstract — This paper describes the bifurcation phenomena of a system of parallel-connected dc/dc buck converters. The results provide useful information for the design of stable current sharing in...
Physica D 164 (2002) 187–201 Applying the method of surrogate data to cyclic time series (2001)
The surrogate data methodology is used to test a given time series for membership of specific classes of dynamical systems. Currently, there are three algorithms that are widely applied in the...
Hopf bifurcation and chaos in a free-running current-controlled Ćuk switching regulator (2000)
C. K. Tse, Senior Member, Y. M. Lai, Student Member
Abstract—An autonomous free-running Ćuk converter is studied in this paper. Analysis of the describing nonlinear state equations shows that the system loses stability via a supercritical Hopf...
New single-stage PFC regulator using the Sheppard-Taylor topology (1998)
Abstract — This paper describes a new usage of the dc/dc converter developed by D. I. Sheppard and B. E. Taylor in 1983 for achieving high power factor and output regulation. This converter may be...
Abstract — A computer-aided tool for the design of switching power supplies integrating layout editor, autorouter, component library builder, and EMI simulator is presented. The software takes on a...
On the value distribution of fl(f(k))n (1994)
Quantitative estimations on the value distribution of fl(f(k))n are studied in this paper. As a result of this, some known results are improved.
Anti-Jamming Performance of Chaotic Digital Communication Systems (1989)
G. Palmisano, G. Palumbo, S. Pennisi, Cmos Current Amplifiers, K. Lakshmikumar, R. Hadaway, ...
and modeling of mismatch in MOS transistors for precision analog design,”
Effects on the immune system associated with living near a pesticide dump site.
Vine, M F, Stein, L, Weigle, K, Schroeder, J, Degnan, D, Tse, C K, ...
In this paper, we report results of the second phase of a larger study designed to evaluate the effects on the immune system of living near a Superfund site containing organochlorine pesticides,...
Effects on the immune system associated with living near a pesticide dump site.
Vine, M F, Stein, L, Weigle, K, Schroeder, J, Degnan, D, Tse, C K, ...
In this paper, we report results of the second phase of a larger study designed to evaluate the effects on the immune system of living near a Superfund site containing organochlorine pesticides,...
Acetylcholinesterase antibodies and thyroid autoimmunity.
Weetman, A P, Tse, C K, Randall, W R, Tsim, K W, Barnard, E A
It has been suggested that anti-thyroglobulin antibodies cross-react with acetylcholinesterase (AChE) and that this may explain the pathogenesis of Graves' ophthalmopathy. We have tested this...