Force Sensing Resistors (FSRs) are manufactured by sandwiching a Conductive Polymer Composite (CPC) between metal electrodes. The piezoresistive property of FSRs has been exploited to perform stress and strain measurements, but the rheological polymers undermined repeatability measurements causing creep in electrical resistance FSRs. With aim understanding phenomenon, drift response thirty two specimens was studied using statistical approach. Similarly, theoretical model for developed...

Conductive polymer composites are manufactured by randomly dispersing conductive particles along an insulating matrix. Several authors have attempted to model the piezoresistive response of composites. However, all proposed models rely upon experimental measurements electrical resistance at rest state. Similarly, available in literature assume a voltage-independent and stress-independent area for tunneling conduction. With aim developing validating more comprehensive model, test bench...

Purpose The purpose of this paper is to propose going one step further in the simulation tools related agriculture by integrating fleets mobile robots for execution precision techniques. proposed new environment allows user define different mobiles and agricultural implements. Design/methodology/approach With computational tool, crop field, fleet sensors actuators that are incorporated into each robot can be configured means two interfaces: a configuration interface graphical interface,...

The force-sensing resistors (FSRs), like the other types of sensors, present a series errors that make their use limited to applications do not require high levels precision. Among most outstanding this type sensors are hysteresis, non-linearity and drift errors. A methodology seeks reduce these by analyzing alternative correlations those proposed manufacturers based on simple linear is performed. This paper presents results research aimed at characterization Tekscan A201-1 sensor, in which...

The coating of polymeric substrate polyetheretherketone (PEEK) with silver nanoparticles (AgNPs) was carried out by a wet chemical route at room temperature. process developed from the Tollens reagent and D-glucose as reducing agent. resulting composite exhibited antimicrobial activity. PEEK films were coated single layer two layers in various concentrations. crystallographic properties polymer analyzed X-ray diffraction (XRD). Fourier transform infrared spectra (FTIR) show interaction...

This article upgrades the RC linear model presented for piezoresistive force sensors. Amplitude nonlinearity is found in sensor conductance, and a characteristic equation formulated modeling its response under DC-driving voltages below 1 V. The feasibility of such tested on four FlexiForce A201-100 sensors by varying sourcing voltage applied forces. Since proves to be valid, method obtaining specific sensitivity calculating appropriate feedback resistor driving circuit; this provides...

Force Sensing Resistors (FSRs) are manufactured from a blend of conductive nanoparticles dispersed in an insulating polymer matrix. FSRs exhibit large amounts hysteresis and drift error, but currently, great effort is placed on improving their performance through different techniques applied during sensor manufacturing. In this article, novel technique for the presented; method can be to already-manufactured sensors, which clear benefit proposed procedure. The based driving sensors with...

Robust control techniques for power converters are becoming more attractive because they can meet with most demanding goals like uncertainties. In this sense, the Takagi-Sugeno (T-S) fuzzy controller based on linear matrix inequalities (LMI) is a by intervals that has been relatively unexplored output-voltage regulation problem in switching converters. Through technique it possible to minimize disturbance rejection level, satisfying constraints over decay rate of state variables as well...

Force sensing resistors (FSRs) typically exhibit noticeably different responses from one device to another, and thus, an individual time-consuming calibration is required for each device. With the aim of speeding-up development process applications involving FSRs, a framework calibration-less operation FSRs presented. The method based on performing periodic updates output voltage at null force employing unique sensitivity value. Dynamic forces were applied temperatures 96 FlexiForce sensors...

In this paper we present a new method for measuring forces using piezoresistive sensors. This dramatically increases the accuracy and repeatability of readings compared with traditional methods. These improvements will allow common use sensors in robotic applications, where only expensive sophisticated force such as load cells are currently used. We also sketch haptic interface under development, consisting data glove which these integrated. is intended to control an Intelligent Assist...

A dataglove-based interface is presented for tracking the forces applied by hand during contact tasks with a 6-degree-of-freedom (DOF) manipulator. The uses 11 force sensors carefully placed on palm-side fabric of 16 DOF dataglove. use piezoresistive technology to measure individual components from hand. Based dataglove measurements, these are transformed and summed assemble resultant vector. Finally, this vector translated into manipulator frame using orientation measurements an inertial...

Force Sensing Resistors (FSRs) are low-cost alternatives to load cells for pressure and force sensing. Nonetheless, FSRs exhibit a comparative lower repeatability due their large hysteresis creep response. The operate on the basis of piezoresistive effect, but they have proven piezocapacitive effect too. A test bench has been arranged enable both: conductance (the inverse resistance) capacitance readings total 16 FSRs; measures using DC input signal, whereas is estimated an AC sourcing....

This paper presents the implementation for first time of a Multi-Particle Swarm Optimization (MPSO) algorithm in tuning PID controller Power Factor Correction (PFC), applied to 100W AC-DC boost converter. MPSO navigates search space where each dimension corresponds constants (Proportional, Integral, Derivative and Filter), prioritizing communication over exploration algorithm. The parameters are randomly initialized reduced sector [Kp,Ki,Kd,Kn], optimize solution. In step, is validated using...

Force-sensing resistors (FSRs) are inexpensive alternatives to load cells. They suitable for applications where noninvasive devices needed measure force, stress, or pressure. However, they have been proved be hysteresis prone and offer nonrepeatable readings due their highly voltage-dependent electrical resistance. A piezocapacitive effect has found as an alternative phenomenon that is able force-dependent of capacitance with less error. Also, this not dependent on voltage, which also...

Polyaniline (PANI) has recently gained great attention due to its outstanding electrical properties and ease of processability; these characteristics make it ideal for the manufacturing polymer blends. In this study, processing piezoresistive characterization composites resulting from blend PANI with ultra-high molecular weight polyethylene (UHMWPE) in different percentages (wt %) is reported. The PANI/UHMWPE were uniformly homogenized by mechanical mixing pellets manufactured compression...

Force sensing resistors (FSRs) are manufactured by the vigorous mixing of conductive particles with an insulating polymer resulting in a composite (CPC). FSRs have found great acceptance biomechanical applications due to their low profile and light weight. However, exhibit considerable amounts hysteresis repeatability error that currently limit usage. In attempt overcome this limitation, errors were assessed under different conditions sourcing voltages (VFSR) driving circuits. It was...

Piezoresistive force sensors exhibit considerable lower accuracy compared with load cells and measuring systems based in strain gauges, however a new method for forces using piezoresistive is described this paper, leading to increase the repeatability of readings. The consists reading sensor's conductance capacitance by applying DC sinusoidal waveforms, thereby allow us determine multivariable estimation force, instead traditional, purely resistive model that has been used up now. A study...

Los Sensores de Fuerza Resistivos (FSRs) despliegan cantidades considerables histéresis y error repetitividad que inhiben su uso en aplicaciones requieren lecturas fuerza alta precisión. En este trabajo se presenta la caracterización modelado del sensor presión Tekscan A201-1 empleando función Operador Preisach (OP). Con el fin compensar durante funcionamiento sensor, OP inverso halló numéricamente sobre base algoritmo coincidencia más cercana (CMA). Se construyó un banco pruebas, capaz...

Polymer nanocomposites have found wide acceptance in research applications as pressure sensors under the designation of force-sensing resistors (FSRs). However, given random dispersion conductive nanoparticles polymer matrix, sensitivity FSRs notably differs from one specimen to another; this condition has precluded use industrial that require large part-to-part repeatability. Six Sigma methodology provides a standard framework reduce process variability regarding critical variable. The core...

Recently, there has been a huge increase in the different ways to manufacture polymer-based sensors. Methods like additive manufacturing, microfluidic preparation, and brush painting are just few examples of new approaches designed improve sensor features self-healing, higher sensitivity, reduced drift over time, lower hysteresis. That being said, we believe is still lot potential boost performance current sensors by applying modeling, classification, machine learning techniques. With this...

Tradicionalmente las mediciones de fuerza en aplicaciones industrialesse han efectuado empleando celdas carga. Dichos dispositivosemplean galgas extensiométricas instaladas sobre mecanismosmetálicos deformables, motivo por el cual carga resultanvoluminosas, pesadas y costosas para ser integradas aplicacionesbiomédicas que requieren efectuar lecturas fuerzas una forma noinvasiva. Como respuesta a esta necesidad surgido los compuestospoliméricos conductores (CPC), cuales se construyen...

Force Sensing Resistors (FSRs) are obtained by randomly dispersing conductive nanoparticles in an insulating polymer matrix. The low-profile and low-weight characteristics of FSRs have been exploited the manufacturing pressure-mapping insoles. However, exhibit low repeatability which limits extensive usage such devices certain applications that require high levels accuracy repeatability. In order to enhance performance FSRs, a custom-designed insole has manufactured from commercial FSRs....

Force sensing resistors (FSR) based in conductive polymer composites (CPC) are a cost-effective alternative to load cells for force measurement. Nevertheless, their physical characteristics related rheological features provoke some drawbacks such as hysteresis, drift, low repeatability, and sensitivity degradation (SD), which is concerning issue when final application involves periodic loading. Although it already known that SD voltage-related phenomenon practical considerations avoid have...

The manufacturing and characterization of polymer nanocomposites is an active research trend nowadays.Nonetheless, statistical studies are not easy task since they require several factors to consider, such as: large amount samples manufactured from a standardized procedure specialized equipment address tests in repeatable fashion.In this manuscript, the experimental sensitivity, hysteresis error drift was carried out at multiple input voltages ( ) for following commercial brands FSRs (force...

<abstract> We carried out physicochemical and mechanical characterization studies of glass-ceramic materials obtained from industrial waste slag, fly ash glass cullet. These were performed through the sintering process powder by means cold compaction, in concentrations 10% 70% 20% A total 230 pellets 15 mm diameter 5 thickness produced. Later, heat treated with a heating ramp 10 ℃/min up to 1000 ℃ held for 2 hours, followed cooling rate ℃/min. The remaining 1050 ℃, same hold times. increase...