Browsing by Author "Vidal Seguí, Yolanda"
Now showing items 1-20 of 86
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Acceleration-based fault-tolerant control design of offshore fixed wind turbines
(2016)
Article
Open AccessWind turbines (WTs) are basically controlled by varying the generator load torque (with the so-called torque control) and the blade pitch angles (with the so-called pitch control) based on measurement of the generator shaft ... -
A chaotic secure communication scheme based on duffing oscillators and frequency estimation
(2013)
Conference report
Open AccessThis work presents a new technique to securely transmit and retrieve a message signal via chaotic systems. In our system, a two-valued message signal modulates the frequency of a Duffing oscillator sinusoidal term. An ... -
Active control of hysteretic base-isolated structures via delayed signals
(2010)
Conference lecture
Open Access -
A discontinuous galerkin formulation for solid dynamics
(Omnipress, 2006)
Lecture
Open Access -
A fault detection method for hysteretic base-isolation systems
(Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III (MA3), 2011-02)
Part of book or chapter of book
Open Access -
A fault detection method for pitch actuators faults in wind turbines
(2015)
Conference report
Open AccessThe paper presents a model-based fault detection method for pitch actuators faults using the normalized gradient method to estimate the parameters of the pitch actuator. One major difficulty is that the input signal to the ... -
A modified Chua chaotic oscillator and its application to secure communications
(2014)
Article
Open AccessIn this paper, a new modified Chua oscillator is introduced. The original Chua oscillator is well known for its simple implementation and mathemati- cal modeling. A modification of the oscillator is proposed in order to ... -
An experimental realization of a chaos-based secure communication using arduino microcontrollers
(2015-08-27)
Article
Open AccessSecurity and secrecy are some of the important concerns in the communications world. In the last years, several encryption techniques have been proposed in order to improve the secrecy of the information transmitted. ... -
A secure communication design based on the chaotic logistic map: an experimental realization using Arduino microcontrollers
(Springer, 2015)
Part of book or chapter of book
Restricted access - publisher's policy -
A secure communication system based on a modified chaotic chua oscillator
(2014)
Conference lecture
Open AccessIn this paper we propose a new scheme for secure communications us- ing a modified Chua oscillator. A modification of the oscillator is proposed in order to facilitate the decryption. The communication system requires two ... -
Asymetric modelling and control of an electronic throttle
(2016-03)
Article
Open AccessThis paper presents an improved model for an automotive electronic throttle inspired on the behavior observed in real-time experiments. Due to a number of issues, particularly the return-spring, the performance of the ... -
A velocity based active vibration control of hysteretic systems
(2011)
Conference report
Open Access -
A velocity based active vibration control of hysteretic systems
(2011-01)
Article
Open AccessHysteresis is a property of systems that do not instantly follow the forces applied to them, but react slowly, or do not return completely to their original state. A velocity based active vibration control, along with a ... -
Bounds for quantities of interest and adaptivity in the element-free Galerkin method
(Wiley and Sons, 2008-07)
Article
Open AccessA novel approach to implicit residual-type error estimation in mesh-free methods and an adaptive refinement strategy are presented. This allows computing upper and lower bounds of the error in energy norm with the ultimate ... -
Chattering control design on a variable-speed horizontal-axis wind turbine
(2011)
Conference report
Restricted access - publisher's policy -
Computed-torque-plus-compensation-plus-chattering controller of robot manipulators
(Intech, 2009-12)
Part of book or chapter of book
Open Access -
Condition monitoring of wind turbine structures through univariate and multivariate hypothesis testing
(IntechOpen, 2018)
Part of book or chapter of book
Restricted access - publisher's policyThis chapter presents a fault detection method through uni- and multivariate hypothesis testing for wind turbine (WT) faults. A data-driven approach is used based on supervisory control and data acquisition (SCADA) data. ... -
Control of base-isolated systems using force feedback
(2011)
Conference report
Open Access -
Damage and fault detection of structures using principal component analysis and hypothesis testing
(Springer, 2017-12-13)
Part of book or chapter of book
Restricted access - publisher's policyThis chapter illustrates the application of principal component analysis (PCA) plus statistical hypothesis testing to online damage detection in structures, and to fault detection of an advanced wind turbine benchmark under ... -
Damage diagnosis for offshore fixed wind turbines
Conference report
Open AccessThis paper proposes a damage diagnosis strategy to detect and classify different type of damages in a laboratory offshore-fixed wind turbine model. The proposed method combines an accelerometer sensor network attached to ...
