Frequency scaling simulation of Chua’s circuit by automatic determination and control of step-size

ESTEBAN TLELO CUAUTLE JESUS MANUEL MUÑOZ PACHECO Jorge Martinez_Carballido (2007)

A procedure is introduced to speed-up time simulation of Chua’s circuit by means of determining the eigenvalues of its

state matrixes. A multistep method is applied with automatic control of step-size (h), where h is determined by the computation

of the eigenvalues of the state matrixes which change according to the slopes of Chua’s diode. It is shown that

the proposed simulation procedure enhances the estimation of the values of the circuit elements in Chua’s circuit and the

exploration on its frequency scaling behavior. Besides, it is not necessary to give an initial step-size for initializing the

simulation.

Article

Numerical simulation State variables approach Chua’s circuit Step-size control Eigenvalues CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA FÍSICA ELECTRÓNICA

FPGA-based educational platform for real-time image processing experiments

JUAN MANUEL RAMIREZ CORTES MARIA DEL PILAR GOMEZ GIL VICENTE ALARCON AQUINO Jorge Martinez_Carballido EMMANUEL MORALES FLORES (2010)

In this paper, an implementation of an educational platform for real-time linear and morphological image filtering using a FPGA NexysII, Xilinx®, Spartan 3E, is described. The system is connected to a USB port of a personal computer, which in that way form a powerful and low-cost design station for educational purposes. The FPGA-based system is accessed through a MATLAB graphical user interface, which handles the communication setup and data transfer. The system allows the students to perform comparisons between results obtained from MATLAB simulations and FPGA-based real-time processing. Concluding remarks derived from course evaluations and lab reports are presented.

Article

Image Processing Hardware Education Filtering CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA FÍSICA ELECTRÓNICA ELECTRÓNICA