Neuro-fuzzy chip to handle complex tasks with analog performance

This paper presents a mixed-signal neuro-fuzzy controller chip which, in terms of power consumption, input–output delay, and precision, performs as a fully analog implementation. However, it has much larger complexity than its purely analog counterparts. This combination of performance and complexity is achieved through the use of a mixed-signal architecture consisting of a programmable analog core of reduced complexity, and a strategy, and the associated mixed-signal circuitry, to cover the whole input space through the dynamic programming of this core. Since errors and delays are proportional to the reduced number of fuzzy rules included in the analog core, they are much smaller than in the case where the whole rule set is implemented by analog circuitry. Also, the area and the power consumption of the new architecture are smaller than those of its purely analog counterparts simply because most rules are implemented through programming. The Paper presents a set of building blocks associated to this architecture, and gives results for an exemplary prototype. This prototype, called multiplexing fuzzy controller (MFCON), has been realized in a CMOS 0.7 um standard technology. It has two inputs, implements 64 rules, and features 500 ns of input to output delay with 16-mW of power consumption. Results from the chip in a control application with a dc motor are also provided

Material auxiliar de clase de dispositivos electrónicos

El presente volumen recoge el material auxiliar de clase utilizado por los autores en el desarrollo de la asignatura Dispositivos Electrónicos que imparten en la E.T.S. de Ingeniería Informática de la Universidad de Málaga, y que forma parte de las materias que se estudian en el primer curso de las diferentes titulaciones de Informática: Ingeniero en Informática, Ingeniero Técnico en Informática de Sistemas e Ingeniero Técnico en Informática de Gestión. Junto a las transparencias que sirven de soporte a las explicaciones y desarrollo del temario en las clases, se ofrece también al alumno un breve resumen de los conceptos más destacados en cada una de ellas a modo de guión y como base del trabajo de estudio que el alumno ha de desarrollar y completar con la ayuda de la bibliografía recomendada. Se completa el contenido de este trabajo con un cuestionario y una relación de problemas propuestos junto con sus soluciones, para cada uno de los temas

Dispositivos Electrónicos: Exámenes Resueltos (2002-2009)

El presente volumen reune los enunciados y las soluciones de los exámenes propuestos entre 2002 y 2009 en las diferentes convocatorias oficiales de examen de la asignatura Dispositivos Electrónicos que he impartido en las diferentes titulaciones de la Escuela Técnica Superior de Ingeniería Informática de la Universidad de Málaga durante esos años. A los largo de este texto se presentan diferentes enunciados de examen ordenados en forma cronológica y en el mismo formato en que se entregaban a los alumnos. Cabe notar que al final de cada uno de los enunciados de examen se proporciona un pequeño formulario que resume las principales ecuaciones que el alumno puede necesitar conocer y manejar en la solución de los problemas. A continuación de cada enunciado se desarrolla la respuesta en detalle, en algunos casos mostrando diferentes alternativas posibles al abordar la solución del problema propuesto. En algunos casos sólo se ha proporcionado la respuesta a los problemas, dado que como puede verse en aquellos casos en los que se proporciona la respuesta completa(preguntas de teoría y problemas) la respuesta a las cuestiones teóricas es fácil de encontrar en el Manual 70 (Curso de Dispositivos Electronicos en Informática y Problemas de Examen Resueltos) editado por el SPICUM (Servicio de Publicaciones de la UMA)

Prácticas de Instrumentación Biomédica con Arduino Tinkercad

Este trabajo presenta ejemplos de prácticas para una asignatura de Instrumentación Biomédica propuestas como proyectos para ser simulados, depurados y/o testados en la plataforma Arduino-Tinkercad®, como actividad previa a su implementación física. Esta opción se plantea como respuesta a las necesidades de una docencia práctica no presencial, que aprovecha recursos disponibles en la web, al tiempo que se erige en un excelente complemento para la preparación de las sesiones de laboratorio en una docencia presencial.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

A Modular Programmable CMOS Analog Fuzzy Controller Chip

We present a highly modular fuzzy inference analog CMOS chip architecture with on-chip digital programmability. This chip consists of the interconnection of parameterized instances of two different kind of blocks, namely label blocks and rule blocks. The architecture realizes a lattice partition of the universe of discourse, which at the hardware level means that the fuzzy labels associated to every input (realized by the label blocks) are shared among the rule blocks. This reduces the area and power consumption and is the key point for chip modularity. The proposed architecture is demonstrated through a 16-rule two input CMOS 1-μm prototype which features an operation speed of 2.5 Mflips (2.5×10^6 fuzzy inferences per second) with 8.6 mW power consumption. Core area occupation of this prototype is of only 1.6 mm 2 including the digital control and memory circuitry used for programmability. Because of the architecture modularity the number of inputs and rules can be increased with any hardly design effort.This work was supported in part by the Spanish C.I.C.Y.T under Contract TIC96-1392-C02- 02 (SIVA)

Three Realizations and Comparison of Hardware for Piezoresistive Tactile Sensors

Tactile sensors are basically arrays of force sensors that are intended to emulate the skin in applications such as assistive robotics. Local electronics are usually implemented to reduce errors and interference caused by long wires. Realizations based on standard microcontrollers, Programmable Systems on Chip (PSoCs) and Field Programmable Gate Arrays (FPGAs) have been proposed by the authors for the case of piezoresistive tactile sensors. The solution employing FPGAs is especially relevant since their performance is closer to that of Application Specific Integrated Circuits (ASICs) than that of the other devices. This paper presents an implementation of such an idea for a specific sensor. For the purpose of comparison, the circuitry based on the other devices is also made for the same sensor. This paper discusses the implementation issues, provides details regarding the design of the hardware based on the three devices and compares them.This work has been partially funded by the Spanish Government under contracts TEC2006-12376 and TEC2009-14446

Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s = 13 TeV

Abstract The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d̂ t) and chromomagnetic (μ̂ t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb−1. The linearized variable AFB(1) is used to approximate the asymmetry. Candidate t t ¯ events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for t t ¯ final states. The values found for the parameters are AFB(1)=0.048−0.087+0.095(stat)−0.029+0.020(syst),μ̂t=−0.024−0.009+0.013(stat)−0.011+0.016(syst), and a limit is placed on the magnitude of | d̂ t| < 0.03 at 95% confidence level. [Figure not available: see fulltext.

Measurement of electroweak WZ boson production and search for new physics in WZ + two jets events in pp collisions at √s=13TeV

A measurement of WZ electroweak (EW) vector boson scattering is presented. The measurement is performed in the leptonic decay modes WZ→ℓνℓ′ℓ′, where ℓ,ℓ′=e,μ. The analysis is based on a data sample of proton-proton collisions at √s=13 TeV at the LHC collected with the CMS detector and corresponding to an integrated luminosity of 35.9 fb−1. The WZ plus two jet production cross section is measured in fiducial regions with enhanced contributions from EW production and found to be consistent with standard model predictions. The EW WZ production in association with two jets is measured with an observed (expected) significance of 2.2 (2.5) standard deviations. Constraints on charged Higgs boson production and on anomalous quartic gauge couplings in terms of dimension-eight effective field theory operators are also presented

Search for Physics beyond the Standard Model in Events with Overlapping Photons and Jets

Results are reported from a search for new particles that decay into a photon and two gluons, in events with jets. Novel jet substructure techniques are developed that allow photons to be identified in an environment densely populated with hadrons. The analyzed proton-proton collision data were collected by the CMS experiment at the LHC, in 2016 at root s = 13 TeV, and correspond to an integrated luminosity of 35.9 fb(-1). The spectra of total transverse hadronic energy of candidate events are examined for deviations from the standard model predictions. No statistically significant excess is observed over the expected background. The first cross section limits on new physics processes resulting in such events are set. The results are interpreted as upper limits on the rate of gluino pair production, utilizing a simplified stealth supersymmetry model. The excluded gluino masses extend up to 1.7 TeV, for a neutralino mass of 200 GeV and exceed previous mass constraints set by analyses targeting events with isolated photons.Peer reviewe

Measurement of b jet shapes in proton-proton collisions at root s=5.02 TeV

We present the first study of charged-hadron production associated with jets originating from b quarks in proton-proton collisions at a center-of-mass energy of 5.02 TeV. The data sample used in this study was collected with the CMS detector at the CERN LHC and corresponds to an integrated luminosity of 27.4 pb(-1). To characterize the jet substructure, the differential jet shapes, defined as the normalized transverse momentum distribution of charged hadrons as a function of angular distance from the jet axis, are measured for b jets. In addition to the jet shapes, the per-jet yields of charged particles associated with b jets are also quantified, again as a function of the angular distance with respect to the jet axis. Extracted jet shape and particle yield distributions for b jets are compared with results for inclusive jets, as well as with the predictions from the pythia and herwig++ event generators.Peer reviewe