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Dominique Bonvin

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Related publications (238)

Neighboring-Extremal Control for Singular Dynamic Optimization Problems. II- Multiple-Input Systems

Sébastien Gros, Dominique Bonvin, Benoît Chachuat

Dynamic optimization provides a unified framework for improving process operations while taking operational constraints into account. In the presence of uncertainty, measurements can be incorporated into the optimization framework for tracking the optimum. ...

2009

Drift Correction in Multivariate Calibration Models Using On-line Reference Measurements

Michael Amrhein, Dominique Bonvin, Pamandeep Singh Gujral

On-line measurements from first-order instruments such as spectrometers may be compromised by instrumental, process and operational drifts that are not seen during off-line calibration. This can render the calibration model unsuitable for prediction of key ...

2009

Parametric Sensitivity of Path-Constrained Optimal Control: Towards Selective Input Adaptation

Dominique Bonvin, Benoît Chachuat, Saurabh Anand Deshpande

In the context of dynamic optimization, plant variations necessitate adaptation of the input profiles in order to guarantee both feasible and optimal operation. For those problems having path constraints, two sets of directions can be distinguished in the ...

2009

Quotient method for controlling the acrobot

Dominique Bonvin, Philippe Müllhaupt

This paper describes a two-sweep control design method to stabilize the acrobot, an input-afﬁne under-actuated system, at the upper equilibrium point. In the forward sweep, the system is successively reduced, one dimension at a time, until a two-dimensiona ...

2009

Dynamics and Control of 2D SpiderCrane: A Lie-Bäcklund Approach

Dominique Bonvin, Philippe Müllhaupt

In this paper we present modeling and control of a multicable suspended mechanism called the ‘2D SpiderCrane’. The use of cables, and thus avoiding conventional heavy components, makes such a mechanism suitable for working at high transfer speeds. The init ...

2009

Data Reconciliation of Concentration Estimates from Mid-Infrared and Dielectric Spectral Measurements for Improved On-Line Monitoring of Bioprocesses

Michael Amrhein, Dominique Bonvin, Ian William Marison, Urs von Stockar, Michal Dabros

Real-time data reconciliation of concentration estimates of process analytes and biomass in microbial fermentations is investigated. A Fourier-transform mid-infrared spectrometer predicting the concentrations of process metabolites is used in parallel with ...

2009

Global Stabilization of an Inverted Pendulum – Control Strategy and Experimental Verification

Dominique Bonvin

The problem of swinging up an inverted pendulum on a cart and controlling it around the upright position has traditionally been treated as two separate problems. This paper proposes a control strategy that is globally asymptotically stable under actuator s ...

2009

Velocity-Scheduling Control for a Unicycle Mobile Robot: Theory and Experiments

Dominique Bonvin, Philippe Müllhaupt, Davide Buccieri, Damien Perritaz

Improvement over classical dynamic feedback linearization for a unicycle mobile robots is proposed. Compared to classical extension, the technique uses a higher-dimensional state extension, which allows rejecting a constant disturbance on the robot rotatio ...

2009

Classification of magnetic resonance images from rabbit renal perfusion

Michael Amrhein, Dominique Bonvin, Pamandeep Singh Gujral

The feasibility of using chemometric techniques for the automatic detection of whether a rabbit kidney is pathological or not is studied. Sequential images of the kidney are acquired using Dynamic Contrast-Enhanced Magnetic Resonance Imaging with contrast ...

2009

Optimizing Control Based on Output Feedback

Sébastien Gros, Dominique Bonvin

In the framework of process optimization, the use of measurements to compensate the effect of uncertainty has re-emerged as an active area of research. One of the ideas therein is to adapt the inputs in order to track the active constraints and push certai ...

2009

Partial least-squares regression with unlabeled data

Michael Amrhein, Dominique Bonvin, Pamandeep Singh Gujral

It is well known that the prediction errors from principal component regression (PCR) and partial least-squares regression (PLSR) can be reduced by using both labeled and unlabeled data for stabilizing the latent subspaces in the calibration step. An appro ...

2009

Data-driven controller validation

Dominique Bonvin, Alireza Karimi, Klaske van Heusden

This paper proposes a data-driven test for closed-loop stability. The test is based on a non-conservative stability condition that can be veriﬁed without having to actually implement the controller. It uses a set of measurements from the plant but does not ...

2009

Adaptation Strategies for Real-time Optimization

Dominique Bonvin, Benoît Chachuat

Challenges in real-time process optimization mainly arise from the inability to build and adapt accurate models for complex physico-chemical processes. This paper surveys different ways of using measurements to compensate for model uncertainty in the conte ...

2009

Real-time Optimization with Estimation of Experimental Gradient

Dominique Bonvin, Alejandro Gabriel Marchetti, Benoît Chachuat

For good performance in practice, real-time optimization schemes need to be able to deal with the inevitable model-mismatch problem. Unlike the two-step schemes combining parameter estimation and optimization, the modifier-adaptation approach uses experime ...

2009

Neighboring-Extremal Control for Singular Dynamic Optimization Problems. I-Single-Input Systems

Sébastien Gros, Dominique Bonvin, Benoît Chachuat

A powerful approach for dynamic optimization in the presence of uncertainty is to incorporate measurements into the optimization framework so as to track the optimum. For nonsingular control problems, this can be done by tracking active constraints along b ...

2009

Closed-loop Identification of Multivariable Systems: With or Without Excitation of All References?

Dominique Bonvin, Ljubisa Miskovic, Alireza Karimi

A variance analysis of the parameters of a plant, belonging to a class of multivariable systems, estimated in closed-loop operation is performed. More specifically, having in mind the control applications where it is not desirable to excite all external re ...

2008

Measurement-Based Drift Correction in Spectroscopic Calibration Models

Michael Amrhein, Dominique Bonvin, Pamandeep Singh Gujral

Correct prediction of analyte concentrations from a new spectrum without drift is possible provided the spectrum lies in the row space spanned by the calibration spectra (space-inclusion condition). However, this condition may be violated as on-line spectr ...

cemagref Languedoc Roussillon2008

Rank analysis of spectral reaction data for factor-analytical methods

Michael Amrhein, Dominique Bonvin, Nirav Pravinbhai Bhatt

Cemagref Languedoc Roussillon2008

Model Parameterization Tailored to Real-Time Optimization

Dominique Bonvin, Benoît Chachuat

2008

Control of the Toycopter using a Flat Approximation

Dominique Bonvin, Philippe Müllhaupt, Jean Lévine

This paper considers a helicopter-like setup called the Toycopter. Its particularities reside first in the fact that the toycopter motion is constrained to remain on a sphere and second in the use of a variable rotational speed of the propellers to vary th ...

2008

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