A5029255577- Chaos control and synchronization
- Nonlinear Dynamics and Pattern Formation
- Neural Networks and Applications
- Analog and Mixed-Signal Circuit Design
- Advancements in PLL and VCO Technologies
- stochastic dynamics and bifurcation
- CCD and CMOS Imaging Sensors
- Cellular Automata and Applications
- Advanced Memory and Neural Computing
- Neural Networks and Reservoir Computing
- Quantum chaos and dynamical systems
- Chaos-based Image/Signal Encryption
- Advanced Sensor and Energy Harvesting Materials
- Advanced Control Systems Design
- Evolutionary Algorithms and Applications
- Advancements in Semiconductor Devices and Circuit Design
- Semiconductor materials and devices
- Medical Image Segmentation Techniques
- Grey System Theory Applications
- Infrared Target Detection Methodologies
- Neural Networks Stability and Synchronization
- Innovative Energy Harvesting Technologies
- Tactile and Sensory Interactions
- Quantum-Dot Cellular Automata
- VLSI and Analog Circuit Testing
National Institute of Astrophysics, Optics and Electronics
2011-2025
Consejo Nacional de Humanidades, Ciencias y Tecnologías
2022-2025
Benemérita Universidad Autónoma de Puebla
2018-2021
Autonomous University of Tlaxcala
2018-2019
This work describes MexSIC, a data acquisition channel designed for Silicon Photomultipliers (SiPMs), composed of mixed-mode application specific integrated circuit (ASIC) front-end, an FPGA-based processing stage, and user interface. The ASIC provides 1-bit sigma-delta modulated (ΣΔ – <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">M</i> ) digital equivalent the input SiPM current, flag indicating start/end pulse, clock reference generated...
This brief leads the synthesis of fractional‐order memristor (FOM) emulator circuits. To do so, a novel integrator (FOI) topology based on current‐feedback operational amplifier and integer‐order capacitors is proposed. Then, FOI substituting inside flux‐ or charge‐controlled circuits previously reported in literature both versions: floating grounded. demonstrates that FOM can also be configured at incremental decremental mode main fingerprints an are holding up for FOMs. Theoretical results...
Fractional-order chaotic oscillators (FOCOs) have shown more complexity than integer-order ones. However, the majority of electronic implementations were performed using embedded systems; compared to analog implementations, they require huge hardware resources approximate solution fractional-order derivatives. In this manner, we propose design FOCOs integrators based on operational transconductance amplifiers (OTAs). The case study shows implementation by cascading first-order OTA-based...
Designing chaotic oscillators using complementary metal-oxide-semiconductor (CMOS) integrated circuit technology for generating multi-scroll attractors has been a challenge. That way, we introduce current-mode piecewise-linear (PWL) function based on CMOS cells that allow programmable generation of 2–7-scroll attractors. The mathematical model the oscillator designed herein four coefficients and PWL function, which can be varied to provide high value maximum Lyapunov exponent. are...
A trade-off analysis on the number of scrolls and operating frequency is presented. To do so, nonlinear system parameters, real physical active device parameters are taken into account to model behavior saturated function series approximated by a piecewise-linear description. As consequence, not only between investigated, which depends directly at function, but also chaotic attractors efficiently synthesized without application scaling techniques. Theoretical calculations in good agreement...
Abstract This paper shows the application of heuristic Differential Evolution (DE) algorithm to maximize positive Lyapunov exponent in a third-order multi-scroll chaotic oscillator. The case study is saturated nonlinear function series-based computed for 4-scrolls oscillator by varying coefficients dynamical system ( , b c d 1 ), range [0.001..1.000]. experiments are performed and compared executing DE simple Genetic algorithm. results show that quite suitable truncated over continuous...
Abstract Existing models of continuous nonlinear functions used for generating multi-scroll chaotic attractors are based on a piece-wise linear (PWL) approach. These models, although relatively easy to build, do not include any information related the performance parameters active devices, in context possible physical implementation. This is serious drawback, since use PWL model introduces level inaccuracy into numerical analysis which more evident when and experimental results compared....
The design of a wide-band voltage-controlled oscillator (VCO) modified as VCO with programmable tail currents is introduced herein. implemented by using CMOS current-mode logic stages, which are based on differential pairs that connected in ring topology. SPICE simulation results show the operates within frequency ranges 2.65–5.65 GHz, and when it modified, between 1.38 GHz 4.72 GHz. stage detailed along symbolic approximation its dominant pole, varied to increase response order achieve...
A current-controlled grounded resistor that exhibits a frequency-dependent pinched hysteresis loop is described. mathematical model describing this behavior derived and validated numerically, which has the form of Proportional Integral-Derivative (PID) controller. The proposed topology build by using AD844 commercially available active device configured as second-generation current conveyor experimental tests are compared with numerical simulations, showing good agreement among them....
Nowadays, different kinds of experimental realizations chaotic oscillators have been already presented in the literature. However, those do not consider value maximum Lyapunov exponent, which gives a quantitative measure grade unpredictability systems. That way, this paper shows realization an optimized multiscroll oscillator based on saturated function series. First, from mathematical description having four coefficients ( a, b, c, d 1 ), optimization evolutionary algorithm varies them to...
This investigation shows the modeling and simulation of synchronization two multi-scroll chaotic oscillators in a master-slave topology. The is performed by Generalized Hamiltonian forms observer approach from nonlinear control theory. case study consists 4-scroll attractors based on saturated function series. Finally, numerical synchronization, mathematical description, circuit implementation using HSPICE models opamps, show good agreement between theory experiment results.
This study rigorously investigates the effectiveness of nonlinear filters in CMOS for 2-D signal processing to enhance image quality. We comprehensively compare traditional linear filters' performance, which operate on principle linearity, with filters, such as median-median (Med-Med) approach, designed handle data. To ensure validity our findings, we use widely accepted metrics like normalized squared error (NSE), peak signal-to-noise ratio (PSNR), and structural similarity index (SSIM)...
In this work the design and implementation of a white-cane suitable for blind people is presented. The sensing method based on relation distance/vibration; closer object, faster vibration magnitude. magnitude passed by four micro DC motors into fingers user, indicating proximity to object its localization. index, middle, ring, baby are used indicate position left, front, respectively. sensors located 3-D printed phantom model glasses, enabling capability whole environment in 360° fashion...