A5102930036- Advanced Fiber Optic Sensors
- Piezoelectric Actuators and Control
- Iterative Learning Control Systems
- Photonic and Optical Devices
- Aeroelasticity and Vibration Control
- Advanced Fiber Laser Technologies
- Optical Systems and Laser Technology
- Optical measurement and interference techniques
- Advanced Sensor Technologies Research
- Advanced Measurement and Metrology Techniques
- Sensor Technology and Measurement Systems
- Mexican Socioeconomic and Environmental Dynamics
- Communication and COVID-19 Impact
- Regional Development and Innovation
- Migration, Health, Geopolitics, Historical Geography
- Social Sciences and Policies
- Urbanism, Landscape, and Tourism Studies
- Network Time Synchronization Technologies
- Galician and Iberian cultural studies
- Reliability and Maintenance Optimization
- Latin American Urban Studies
- Educational Practices and Policies
- Image Processing Techniques and Applications
- Radiation Effects in Electronics
- Education in Rural Contexts
Centro de Tecnologías Aeronauticas (Spain)
2019-2022
Centro de Estudios Andaluces
2019-2022
Center for Advanced Aerospace Technologies
2019
Abstract Fibre optic technology is rapidly evolving, driven mainly by telecommunication and sensing applications. Excellent reliability of the manufacturing processes low cost have drawn ever increasing attention to fibre-based sensors, e.g. for studying mechanical response/limitations aerospace composite structures. Here, a vector bending orientation distinguishing curvature sensor, based on asymmetric coupled multi-core fibre, proposed experimentally demonstrated. By optimising mode...
A small size and compactly packaged optical sensor for high-temperature measurements is reported. The consists of a short piece multi-core fiber (MCF) spliced to the distal end single-mode fiber. packaging an inner ceramic shield that prevents bending, curvature, vibration effects on MCF, outer metallic protects device against impacts. interaction between specific supermodes excited in MCF creates interference pattern shifts linearly with temperature. was calibrated range from 200 1000 °C...
The authors introduce a new controller, aimed at industrial domains, that improves the performance and accuracy of positioning systems based on Stewart platforms. More specifically, this paper presents, validates experimentally, sliding mode control for precisely platform used as mobile in non-destructive inspection (NDI) applications. NDI application involves exploring specimen surface aeronautical coupons different heights. In order to avoid defocusing blurred images, must be positioned...
This paper presents a deep analysis of different feed-forward (FF) techniques combined with two proportional-integral-derivative (PID) control to guide real piezoelectric actuator (PEA). These devices are well known for non-linear effect called “hysteresis” which generates an undesirable performance during the device operation. First, PEA was analysed under experiments determine response frequencies and voltages. Secondly, voltage frequency inputs were chosen study approaches performed using...
This paper presents an improved control approach to be used for piezoelectric actuators. The proposed is based on sliding mode with estimation perturbation (SMCPE) techniques. Also, a proportional–integral–derivative (PID)-type surface position tracking. has been studied and implemented in commercial actuator. A model the system introduced, which includes Bouc–Wen (BW) represent hysteresis, it identified by means of System Identification Toolbox Matlab/Simulink. Experimental data show that...
In piezoelectric actuators (PEAs), which suffer from inherent nonlinearities, sliding mode control (SMC) has proven to be a successful strategy. Nonetheless, in micropositioning systems with time delay, integral proportional (PI), and SMC, feedback schemes have tendency overcompensate and, consequently, high controller gains must rejected. This may produce slow inaccurate response. paper presents novel strategy that deals time-delay aimed at achieving precise positioning by combining an...
Piezoelectric actuators (PEA) are devices that used for nano- microdisplacement due to their high precision, but one of the major issues is non-linearity phenomena caused by hysteresis effect, which diminishes positioning performance. This study presents a novel control structure in order reduce effect and increase PEA performance using fuzzy logic (FLC) combined with Hammerstein–Wiener (HW) black-box mapping as feedforward (FF) compensation. In this research,...
Piezoelectric actuators (PEA) are frequently employed in applications where nano-Micr-odisplacement is required because of their high-precision performance. However, the positioning affected substantially by hysteresis which resembles an nonlinear effect. In addition, mathematical models own deficiencies that can influence on reference following The objective this study was to enhance tracking accuracy a commercial PEA stack actuator with implementation novel approach consists use...
This study analyzed the application of XBee technology for control applications embedded in big machinery. In particular, it presented layout, topology, design frames, and error mechanisms that are required implementing wireless networked applications. was devoted to presenting experimental use cases systems help scientific community implement new systems. Experimental tests were carried out over a Single Input Output (SISO) evaluate its close loop The results these have been discussed...
Piezoelectric Actuators (PEAs) are devices that can support large actuation forces compared to their small size and widely used in high-precision applications where micro- nano-positioning required. Nonetheless, these actuators have undeniable non-linearities, the well-known ones being creep, vibration dynamics, hysteresis. The latter originate from a combination of mechanical strain electric field action; as consequence, affect PEA tracking performance even reach instability. scope this...
Wireless technologies are being introduced in industrial applications since they provide certain benefits, such as the flexibility to modify layout of nodes, improving connectivity with monitoring and decision adapting mobile devices reducing or eliminating cabling. However, companies still reluctant use them time-critical applications, consequently, more research is needed order be massively deployed environments. This paper goes this direction by presenting a novel wireless acquisition...
An optical gauge based on coupled multi-core fiber is proposed and experimentally demonstrated. By using direct laser writing to selectively break the index profile symmetry, asymmetric mode coupling between cores introduced. This allows fabricate gauges with ability detect differentiate different types of deformation in structures just a single sensor. The fabricated are compared calibrated commercial Bragg gratings as strain, vibration curvature gauge. tests indicate superior performance...
An amendment to this paper has been published and can be accessed via a link at the top of paper.
Aircraft manufacturers aim to decrease the fuel consumption based on reducing weight and increasing subsystem efficiency. Hence, electric power system (EPS) acquires great relevance because it must be efficient lightweight. Any change in EPS not affect aircraft's electrical safety, which under a traditional decentralized strategy is ensured by redundancy. Recently, several strategies introduction of multiport converters have arisen. Such meet established safety goals since aforementioned...
The historical development of the electric trolley in La Paz is connected to process modernization and urban expansion carried out by liberal criollo-mestizo elites early 20th century. archival documentation shows as part city's modern transportation system, but also a technology social groups conflict for material symbolic control space. Drawing on Doreen Massey's analysis "power-geometries," article argues that was functional constitution subjectivities shaping people’s understanding...
The design and performance evaluation of an innovative, small size, compactly packaged high temperature interferometric optical sensor for harsh environments is reported. was built with a short segment strongly coupled multi-core fiber (MCF) spliced to typical single mode (SMF). Matlab MathWorks PhotonDesign simulation programs were used the monitor widest range possible commercial interrogator. SMF-MCF structure protected by two temperature-resistant tubes: inner ceramic tube internal hole...