International Journal of Chaos, Control, Modelling and Simulation

MESSAGE EMBEDDED CIPHER USING 2-D CHAOTIC MAP Mina Mishra1 and Dr. V.H. Mankar2  1Ph. D. Scholar, Department of Electronics & Telecommunication, Nagpur University, Nagpur, Maharashtra, India 2 Senior Faculty, Department of Electronics Engineering, Government Polytechnic, Nagpur, Maharashtra, India  ABSTRACT This paper constructs two encryption methods using 2-D chaotic maps, Duffings and Arnold’s cat maps respectively. Both of the methods are designed using message embedded scheme and are analyzed for their validity, for plaintext sensitivity, key sensitivity, known plaintext and brute-force attacks. Due to the less key space generally many chaotic cryptosystem developed are found to be weak against Brute force attack which is an essential issue to be solved. For this issue, concept of identifiability proved to be a necessary condition to be fulfilled by the designed chaotic cipher to resist brute force attack, which is a basic attack. As 2-D chaotic maps ...

HYBRID SYNCHRONIZATION OF HYPERCHAOTIC  LIU SYSTEMS VIA SLIDING MODE CONTROL Sundarapandian Vaidyanathan1 1Research and Development Centre, Vel Tech Dr. RR & Dr. SR Technical University Avadi, Chennai-600 062, Tamil Nadu, INDIA ABSTRACT This paper derives new results for the hybrid synchronization of identical hyperchaotic Liu systems (Liu, Liu and Zhang, 2008) via sliding mode control. In hybrid synchronization of master and slave systems, the odd states of the two systems are completely synchronized, while their even states are antisynchronized. The stability results derived in this paper for the hybrid synchronization of identical hyperchaotic Liu systems have been proved using Lyapunov stability theory. Since the Lyapunov exponents are not required for these calculations, the sliding mode control method is very effective and convenient to achieve anti-synchronization of the identical hyperchaotic Liu systems. Numerical simulations are shown to illustrate and ...

International Journal of Chaos, Control, Modelling and Simulation (IJCCMS) http://airccse.org/journal/ijccms/index.html ISSN : 2319 - 5398 [Online] ; 2319 - 8990 [Print]

SEASONAL VARIATION OF CARRYING CAPACITY ON DISEASED MODEL CAN CAUSE SPECIES EXTINCTION Prodip Roy1, Banshidhar Sahoo2, and Swarup Poria3 1,2,3 Department of Mathematics, Mahadevananda Mahavidyalaya, Kolkata-120, India. ABSTRACT Most natural populations experience fluctuations in biological and environmental factors which causes carrying capacity variation. In this paper, we have introduced a diseased prey-predator model with periodically varying carrying capacity. We have studied the effects of different amplitudes of oscillation as well as different frequencies of oscillation on the dynamics of the model. We have done bifurcation analysis of the model with respect to the amplitude of oscillation and frequency of oscillation of the carrying capacity. We observe limit cycle, low periodic orbits, high periodic orbits and chaos in the model. We observe the existence of critical frequency and amplitude of oscillation of carrying capacity for which the prey population ex...

 International Journal of Chaos, Control, Modelling and Simulation (IJCCMS)     ISSN :  2319 - 5398 [Online] ; 2319 - 8990 [Print] http://airccse.org/journal/ijccms/index.html Aims and Scope:  The International Journal of Chaos, Control, Modelling and Simulation is a bi-monthly open access peer-reviewed journal that publishes articles which contribute new results in all areas of Chaos Theory, Control Systems, Scientific Modelling and Computer Simulation. In the last few decades, chaos theory has found important applications in secure communication devices and  secure data encryption. Control methods are very useful in several applied areas like Chaos, Automation, Communication, Robotics, Power Systems, and Biomedical Instrumentation. The journal focuses on all technical and practical aspects of Chaos, Control, Modelling and Simulation. The goal of this journal is to bring together researchers and practitioners from academia and industry...

SIMMECHANICS VISUALIZATION OF EXPERIMENTAL MODEL OVERHEAD CRANE,ITS LINEARIZATION AND REFERENCE TRACKING-LQR CONTROL  Thein Moe Win1 Tim Hesketh2 Ray Eaton3   School of Electrical Engineering & Telecommunication The University of New South Wales, High St, Kensington, NSW 2052, Australia ABSTRACT Overhead Crane experimental model using Simmechanic Visualization is presented for the robust antisway LQR control. First, 1D translational motion of overhead crane is designed with exact lab model measurements and features. Second, linear least square system identification with 7 past inputs/outputs is applied on collected simulation data to produce more predicted models. Third, minimize root mean square error and identified the best fit model with lowest RMSE. Finally, Linear Quadratic Regulator (LQR) and Reference tracking with pre-compensator have been implemented to minimize load swing and perform fast track on trolley positioning. KEYWORDS Simme...

A Comparative study of controllers for stabilizing a Rotary Inverted Pendulum Velchuri Sirisha and Dr. Anjali. S. Junghare  Electrical Engineering Department, Visvesvaraya National Institute of Technology, Nagpur, India Abstract  This paper describes comparative study of various controllers on Rotary Inverted Pendulum (RIP). PID, LQR, FUZZY LOGIC and H∞ controllers are tried on RIP in MatLab Simulink. The same four controllers have been tested on test bed of RIP system the controllers are compared from various aspects. The controllers in simulink are compared with the controllers in real time. Keywords Fuzzy Logic, H∞, LQR, PID, RIP  Original Source URL: http://airccse.org/journal/ijccms/current2014.html  http://airccse.org/journal/ijccms/index.html