Sanz Díaz, Ricardo; García Gil, Pedro José; Albertos Pérez, Pedro(Elsevier, 2017)
[EN] In this work, a generalization of the Smith Predictor (SP) is proposed to control linear time-invariant (LTI) time-delay single-input single-output (SISO) systems. Similarly to the SP, the combination of any stabilizing ...
Sanz Diaz, Ricardo; García Gil, Pedro José; Diez, José-Luís; Bondía Company, Jorge(Institute of Electrical and Electronics Engineers, 2021-01)
[EN] This brief is focused on the closed-loop control of postprandial glucose levels of patients with type 1 diabetes mellitus after unannounced meals, which is still a major challenge toward a fully autonomous artificial ...
Fernandez-Caballero-Fariñas, Maria Dolores; Sanchez-Torres, Eduardo A.; Sanchez-Jimenez, Virginia; Díaz, Ricardo; Benedito Fort, José Javier; Garcia-Perez, J.V.(Elsevier, 2021-01)
[EN] In the present study, the use of the air-coupled ultrasonic technique has been analysed as a new tool for the contactless assessment of the avocado post-harvest textural modifications during ripening. Thus, ultrasonic ...
Sanz Díaz, Ricardo; García Gil, Pedro José; Albertos Pérez, Pedro(Elsevier, 2016-10)
In this paper, a new predictor-based control strategy for LTI systems with input delay and unknown disturbances is proposed. The disturbing signal and its derivatives up to the r-th order are estimated by means of an ...
Castillo-Frasquet, Alberto; García Gil, Pedro José; Sanz Díaz, Ricardo; Albertos Pérez, Pedro(Elsevier, 2017)
[EN] This paper presents an enhanced Extended State Observer (ESO)-based control strategy to deal with the disturbance attenuation problem for a class of non integral-chain systems subject to non-linear mismatched uncertainties ...
Sanz Díaz, Ricardo(Universitat Politècnica de València, 2015-10-19)
[EN] Some improvements in state estimation and control of quadrotors are presented. An efficient fusion
algorihtm based on the Kalman filter, which also compensates the time delay in the attitude estimation
is developed. ...
Sanz Diaz, Ricardo; Sala-Mira, Iván; Furió-Novejarque, Clara; García Gil, Pedro José; Diez, José-Luís; Bondía Company, Jorge(Elsevier, 2024-08-24)
[EN] Artificial pancreas systems should be designed considering different patient profiles, which is challenging from a control theory perspective. In this paper, a flexible-hybrid dual-hormone control algorithm for an ...
[EN] This paper validates a glucoregulatory model including glucagon receptors dynamics in the description of endogenous glucose production (EGP). A set of models from literature are selected for a head-to-head comparison ...
Liu, Tao; García Gil, Pedro José; Chen, Yueling; Ren, XH; Albertos Pérez, Pedro; Sanz Diaz, Ricardo(Institute of Electrical and Electronics Engineers, 2018-05)
[EN] To address the difficulty of controlling industrial processes with long time delay, a novel design of dead-time compensator (DTC) is introduced, which can be used to predict the undelayed output response of any process ...
Sanz Díaz, Ricardo; García Gil, Pedro José; Zhong, Qing-Chang; Albertos Pérez, Pedro(Institute of Electrical and Electronics Engineers (IEEE), 2017-01)
In this paper, a new robust control strategy based on a predictor and the uncertainty and disturbance estimator is developed for a class of uncertain nonlinear systems with input/output delays. The closed-loop system is ...
Sanz Diaz, Ricardo; García Gil, Pedro José; Fridman, Emilia; Albertos Pérez, Pedro(John Wiley & Sons, 2018-04-01)
[EN] The problem of output stabilization and disturbance rejection for input-delayed systems is tackled in this work. First, a suitable transformation is introduced to translate mismatched disturbances into an equivalent ...
Sanz Diaz, Ricardo; García Gil, Pedro José; Krstic, M.(Institute of Electrical and Electronics Engineers, 2019-09)
[EN] This paper deals with robust observer-based output-feedback stabilization of systems whose actuator dynamics can be described in terms of partial differential equations (PDEs). More specifically, delay dynamics ...
Sanz Díaz, Ricardo; García Gil, Pedro José; Zhong, Qing-Chang; Albertos Pérez, Pedro(American Society of Mechanical Engineers (ASME), 2016-07)
In this paper, a robust control strategy is proposed to control the attitude and the altitude of quadrotors, based on an uncertainty and disturbance estimator (UDE). It is shown that the proposed controller can be tuned ...
Sanz Díaz, Ricardo(Universitat Politècnica de València, 2018-10-30)
Los sistemas con retardo temporal aparecen con frecuencia en el ámbito de la ingeniería, por ejemplo en transmisiones hidráulicas o mecánicas, procesos metalúrgicos o sistemas de control en red. Los retardos temporales han ...
Sanz Diaz, Ricardo; García Gil, Pedro José; Albertos Pérez, Pedro; Zhong, Qing-Chang(John Wiley & Sons, 2017-07-10)
[EN] This paper deals with the problem of stabilizing a class of input-delayed systems with (possibly) nonlinear uncertainties by using explicit delay compensation. It is well known that plain predictive schemes lack ...
Sanz Diaz, Ricardo; García Gil, Pedro José; Fridman, Emilia; Albertos Pérez, Pedro(Taylor & Francis, 2020-02-01)
[EN] This paper deals with asymptotic stabilisation of a class of nonlinear input-delayed systems via dynamic output feedback in the presence of disturbances. The proposed strategy has the structure of an observer-based ...