Papers by BSIT 1B John Andrei Martinez
2012 American Control Conference (ACC)
ABSTRACT A freeway section can be modeled as a switching system, using the Cell Transmission Mode... more ABSTRACT A freeway section can be modeled as a switching system, using the Cell Transmission Model (CTM). In this paper, we propose a method to estimate the operating mode of such systems. The proposed method is based on H∞ synthesis for residual estimation. The estimated residuals are coupled with a logic decision to determine the operating mode of the system. The approach is validated in simulation by using the CTM with parametric uncertainties, fed by experimental data.
2013 European Control Conference (ECC)
In this paper, it is proposed a technique to optimize the power generated by a small scale wind t... more In this paper, it is proposed a technique to optimize the power generated by a small scale wind turbine, by having no wind speed measurement and uncertain knowledge of the power coefficient curve characteristic. First, a Kalmanlike observer is used for estimating the power coefficient characteristic, which is then used in a nonlinear control strategy for the electrical generator that secures power maximization. Then, the uncertain power coefficient function is adjusted with a Recursive Least-Square algorithm that uses the estimate of the power coefficient as reliable information. Finally, from the adjusted power coefficient polynomial is computed the optimal electrical generator speed reference that leads the system to operate near the theoretical optimal power. This methodology is illustrated on a simulated example and compared with a case when the wind speed is measured.
2007 European Control Conference (ECC)
... Fault Tolerant Multi-Sensor Switching Control Strategy. Maria Seron 1 , Xiang W. Zhou 1 , Jos... more ... Fault Tolerant Multi-Sensor Switching Control Strategy. Maria Seron 1 , Xiang W. Zhou 1 , Jose De Dona 1 , John Jairo Martinez Molina 2. (2007). ... oai:hal.archives-ouvertes.fr:hal-00123085. Contributeur : John Jairo Martinez Molina <>. Soumis le : Lundi 8 Janvier 2007, 11:34:59. ...
2013 European Control Conference (ECC), 2013
This paper presents applicative results about fault detection and control for semi-active suspens... more This paper presents applicative results about fault detection and control for semi-active suspension system. The control is extended from the "Acceleration Driven Damping" (ADD) controller combined with a robust fault detection scheme in order to estimate the fault. The approach, based on a quarter of vehicle model includes the nonlinearities of the shock absorber. The robust fault estimation module is based on H∞ background providing robustness. It aims to estimate a sensor fault on the system, especially a bias on accelerometers. Combination of both strategies allows to attenuate the effect the fault on the system. This approved structure aims to be implemented in real time. Validations has been made in a F-Class vehicle in Carsim TM software which provides realistic non-linear vehicle behavior. Results show the effectiveness of the fault tolerant strategy for semi-active dampers.
2012 American Control Conference (ACC)
ABSTRACT A freeway section can be modeled as a switching system, using the Cell Transmission Mode... more ABSTRACT A freeway section can be modeled as a switching system, using the Cell Transmission Model (CTM). In this paper, we propose a method to estimate the operating mode of such systems. The proposed method is based on H∞ synthesis for residual estimation. The estimated residuals are coupled with a logic decision to determine the operating mode of the system. The approach is validated in simulation by using the CTM with parametric uncertainties, fed by experimental data.
Proceedings of the 2004 American Control Conference, 2004
In this paper we report a work done in the context of the ARCOS 1 French program. We introduce a ... more In this paper we report a work done in the context of the ARCOS 1 French program. We introduce a new inter-distance reference model that can be used in cruise control and stop-and-go scenarios. The proposed model is nonlinear and provides dynamic solutions which verify comfort and safety criteria simultaneously. The proposed reference model is based on a compliant model for contact, and has the particularity that its solutions can be described by explicit integral curves.
2013 European Control Conference (ECC)
In this paper, it is proposed a technique to optimize the power generated by a small scale wind t... more In this paper, it is proposed a technique to optimize the power generated by a small scale wind turbine, by having no wind speed measurement and uncertain knowledge of the power coefficient curve characteristic. First, a Kalmanlike observer is used for estimating the power coefficient characteristic, which is then used in a nonlinear control strategy for the electrical generator that secures power maximization. Then, the uncertain power coefficient function is adjusted with a Recursive Least-Square algorithm that uses the estimate of the power coefficient as reliable information. Finally, from the adjusted power coefficient polynomial is computed the optimal electrical generator speed reference that leads the system to operate near the theoretical optimal power. This methodology is illustrated on a simulated example and compared with a case when the wind speed is measured.
2009 European Control Conference (ECC), 2009
This paper deals with the problem of obtaining fault-tolerant guarantees of a multi-sensor switch... more This paper deals with the problem of obtaining fault-tolerant guarantees of a multi-sensor switching strategy for longitudinal control. The strategy selects, at each instant of time, the sensor (belonging to a collection of sensors) that provides the best closed loop performance, as measured by a control-performance criterion. It is assumed that each sensor has an associated feedback controller that has been designed such that the sensor-controller pair stabilises the closed loop system under normal operation conditions. Recent refinements for constructing ultimate-bound invariant sets allow obtaining less conservative fault-tolerant guarantees. Stability of the switching system under fault-free operation conditions and under presence of sensor failures are established in the main r e s u l t so ft h i sp a p e r .
2007 European Control Conference (ECC)
... Fault Tolerant Multi-Sensor Switching Control Strategy. Maria Seron 1 , Xiang W. Zhou 1 , Jos... more ... Fault Tolerant Multi-Sensor Switching Control Strategy. Maria Seron 1 , Xiang W. Zhou 1 , Jose De Dona 1 , John Jairo Martinez Molina 2. (2007). ... oai:hal.archives-ouvertes.fr:hal-00123085. Contributeur : John Jairo Martinez Molina <>. Soumis le : Lundi 8 Janvier 2007, 11:34:59. ...
2013 European Control Conference (ECC), 2013
This paper presents applicative results about fault detection and control for semi-active suspens... more This paper presents applicative results about fault detection and control for semi-active suspension system. The control is extended from the "Acceleration Driven Damping" (ADD) controller combined with a robust fault detection scheme in order to estimate the fault. The approach, based on a quarter of vehicle model includes the nonlinearities of the shock absorber. The robust fault estimation module is based on H∞ background providing robustness. It aims to estimate a sensor fault on the system, especially a bias on accelerometers. Combination of both strategies allows to attenuate the effect the fault on the system. This approved structure aims to be implemented in real time. Validations has been made in a F-Class vehicle in Carsim TM software which provides realistic non-linear vehicle behavior. Results show the effectiveness of the fault tolerant strategy for semi-active dampers.
Fuentes El Reventon Energetico, Nov 6, 2013
The prediction of the well pressure loss and the standpipe pressure (real value of the system pre... more The prediction of the well pressure loss and the standpipe pressure (real value of the system pressure loss) are values that differ in the well drilling operation. The methodology that was elaborated in this study has the goal to decrease that difference using a comparative analysis of rheological models finding the best model to describe the hydraulic behavior and with this, achieve the optimization of simulated value. The methodology was implemented in each section of the well ANH-PATÍA-1-ST-P, and the results could be applied in projects of the same area.
Proceedings of the 2004 American Control Conference, 2004
In this paper we report a work done in the context of the ARCOS 1 French program. We introduce a ... more In this paper we report a work done in the context of the ARCOS 1 French program. We introduce a new inter-distance reference model that can be used in cruise control and stop-and-go scenarios. The proposed model is nonlinear and provides dynamic solutions which verify comfort and safety criteria simultaneously. The proposed reference model is based on a compliant model for contact, and has the particularity that its solutions can be described by explicit integral curves.
IFAC Proceedings Volumes, 2014
Road profile is considered as an essential input that affects the vehicle dynamics. An accurate i... more Road profile is considered as an essential input that affects the vehicle dynamics. An accurate information of this data is fundamental for a better understanding of the vehicle behavior and vehicle control systems design. The present paper presents a novel algorithm (observer) suitable for real-time estimation of vertical road profile. The developed approach is based on a quarter-car model, and on elementary measurements delivered by potentially integrable sensors. The road elevation is modeled as a sinusoidal disturbance signal affecting the vehicle system. Since this signal has unknown and time-varying characteristics, the proposed estimation method implements an adaptive control scheme based on the internal model principle and on the use of the Youla-Kucera parametrization technique (also known as Q-parametrization). For performances assessment, estimations are comparatively evaluated with respect to measurements issued from the LPA (Longitudinal Profile Analyzer) profiler during experimental trials. Further, this new method is compared to the approach provided in (Doumiati et al. (2011)), where a Kalman filter is applied assuming a linear road model. Results show the validity and efficiency of the present observer scheme.
2009 European Control Conference (ECC), 2009
This paper deals with the problem of obtaining fault-tolerant guarantees of a multi-sensor switch... more This paper deals with the problem of obtaining fault-tolerant guarantees of a multi-sensor switching strategy for longitudinal control. The strategy selects, at each instant of time, the sensor (belonging to a collection of sensors) that provides the best closed loop performance, as measured by a control-performance criterion. It is assumed that each sensor has an associated feedback controller that has been designed such that the sensor-controller pair stabilises the closed loop system under normal operation conditions. Recent refinements for constructing ultimate-bound invariant sets allow obtaining less conservative fault-tolerant guarantees. Stability of the switching system under fault-free operation conditions and under presence of sensor failures are established in the main r e s u l t so ft h i sp a p e r .
IFAC Proceedings Volumes, 2006
In this paper it is proposed a new radial and vertical disturbance model for Optical Disc Drives ... more In this paper it is proposed a new radial and vertical disturbance model for Optical Disc Drives (ODD). The model takes into account the optomechanical coupling between the radial and the vertical control loops. As a result, the coupling effect appears as an amplification of the vertical disturbances around the middle and the high frequencies in the vertical control loop (i.e. the focus servo). In addition, this paper proposes a H ∞ controller which compensates the coupling effect by choosing a suitable weighting function. The behavior of the controlled system is analyzed and discussed by using a simulation example in the frequency domain. This work has been supported by the European BLAZE Program.
Agronomia Colombiana, Jun 3, 2011
Fuentes El Reventon Energetico, Nov 6, 2013
The prediction of the well pressure loss and the standpipe pressure (real value of the system pre... more The prediction of the well pressure loss and the standpipe pressure (real value of the system pressure loss) are values that differ in the well drilling operation. The methodology that was elaborated in this study has the goal to decrease that difference using a comparative analysis of rheological models finding the best model to describe the hydraulic behavior and with this, achieve the optimization of simulated value. The methodology was implemented in each section of the well ANH-PATÍA-1-ST-P, and the results could be applied in projects of the same area.
Current Sports Medicine Reports, 2006
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Papers by BSIT 1B John Andrei Martinez