Imperial College London

DrBenoitChachuat

Faculty of EngineeringDepartment of Chemical Engineering

Reader in Process Systems Engineering
 
 
 
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Contact

 

b.chachuat Website

 
 
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Location

 

C609Roderic Hill BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

117 results found

Chachuat B, Sager S, 2018, Introduction to the Special Issue on Global and Robust Optimization of Dynamic Systems, OPTIMAL CONTROL APPLICATIONS & METHODS, Vol: 39, Pages: 425-426, ISSN: 0143-2087

JOURNAL ARTICLE

Houska B, Li JC, Chachuat B, 2018, Towards rigorous robust optimal control via generalized high-order moment expansion, OPTIMAL CONTROL APPLICATIONS & METHODS, Vol: 39, Pages: 489-502, ISSN: 0143-2087

JOURNAL ARTICLE

Quek VC, Shah N, Chachuat B, 2018, Modeling for design and operation of high-pressure membrane contactors in natural gas sweetening, CHEMICAL ENGINEERING RESEARCH & DESIGN, Vol: 132, Pages: 1005-1019, ISSN: 0263-8762

JOURNAL ARTICLE

Bernardi A, Nikolaou A, Meneghesso A, Chachuat B, Morosinotto T, Bezzo Fet al., 2017, Semi-empirical modeling of microalgae photosynthesis in different acclimation states - Application to N. gaditana, JOURNAL OF BIOTECHNOLOGY, Vol: 259, Pages: 63-72, ISSN: 0168-1656

JOURNAL ARTICLE

Feng X, Villanueva ME, Chachuat B, Houska Bet al., 2017, Branch-and-Lift algorithm for obstacle avoidance control, IEEE 56th Annual Conference on Decision and Control (CDC), Publisher: IEEE, ISSN: 0743-1546

CONFERENCE PAPER

Houska B, Chachuat B, 2017, Global optimization in Hilbert space, Mathematical Programming, Pages: 1-29, ISSN: 0025-5610

© 2017 The Author(s) We propose a complete-search algorithm for solving a class of non-convex, possibly infinite-dimensional, optimization problems to global optimality. We assume that the optimization variables are in a bounded subset of a Hilbert space, and we determine worst-case run-time bounds for the algorithm under certain regularity conditions of the cost functional and the constraint set. Because these run-time bounds are independent of the number of optimization variables and, in particular, are valid for optimization problems with infinitely many optimization variables, we prove that the algorithm converges to an (Formula presented.)-suboptimal global solution within finite run-time for any given termination tolerance (Formula presented.). Finally, we illustrate these results for a problem of calculus of variations.

JOURNAL ARTICLE

Peric ND, Villanueva ME, Chachuat B, 2017, SENSITIVITY ANALYSIS OF UNCERTAIN DYNAMIC SYSTEMS USING SET-VALUED INTEGRATION, SIAM JOURNAL ON SCIENTIFIC COMPUTING, Vol: 39, Pages: A3014-A3039, ISSN: 1064-8275

JOURNAL ARTICLE

Rajyaguru J, Villanueva ME, Houska B, Chachuat Bet al., 2017, Chebyshev model arithmetic for factorable functions, JOURNAL OF GLOBAL OPTIMIZATION, Vol: 68, Pages: 413-438, ISSN: 0925-5001

JOURNAL ARTICLE

Sun M, Villanueva ME, Pistikopoulos EN, Chachuat Bet al., 2017, Robust Multi-Parametric Control of Continuous-Time Linear Dynamic Systems, IFAC PAPERSONLINE, Vol: 50, Pages: 4660-4665, ISSN: 2405-8963

JOURNAL ARTICLE

Villanueva ME, Li JC, Feng X, Chachuat B, Houska Bet al., 2017, Computing Ellipsoidal Robust Forward Invariant Tubes for Nonlinear MPC, IFAC PAPERSONLINE, Vol: 50, Pages: 7175-7180, ISSN: 2405-8963

JOURNAL ARTICLE

villanueva ME, Quirynen R, Diehl M, Chachuat B, Houska Bet al., 2017, Robust MPC via min-max differential inequalities, Automatica, Vol: 77, Pages: 311-321, ISSN: 0005-1098

This paper is concerned with tube-based model predictive control (MPC) for both linear and nonlinear, input-affine continuous-time dynamic systems that are affected by time-varying disturbances. We derivea min-max differential inequality describing the support function of positive robust forward invariant tubes, which can be used to construct a variety of tube-based model predictive controllers. These constructions are conservative, but computationally tractable and their complexity scales linearly with the length of the prediction horizon. In contrast to many existing tube-based MPC implementations, the proposed framework does not involve discretizing the control policy and, therefore, the conservatism of the predicted tube depends solely on the accuracy of the set parameterization. The proposed approach is then used to construct a robustMPCscheme based on tubes with ellipsoidal cross-sections. This ellipsoidal MPC scheme is based on solving an optimal control problem under linear matrix inequality constraints. We illustrate these results with the numerical case study of a spring-mass-damper system.

JOURNAL ARTICLE

Adi VSK, Cook M, Peeva LG, Livingston AG, Chachuat Bet al., 2016, Optimization of OSN Membrane Cascades for Separating Organic Mixtures, Editors: Kravanja, Bogataj, Publisher: ELSEVIER SCIENCE BV, Pages: 379-384

BOOK CHAPTER

Baroukh C, Steyer JP, Bernard O, Chachuat Bet al., 2016, dynamic Flux Balance Analysis of the Metabolism of Microalgae under a Diurnal Light Cycle, 11th IFAC Symposium on Dynamics and Control of Process Systems including Biosystems, Publisher: ELSEVIER SCIENCE BV, Pages: 791-796, ISSN: 2405-8963

CONFERENCE PAPER

Bernard O, Mairet F, Chachuat B, 2016, Modelling of Microalgae Culture Systems with Applications to Control and Optimization, Editors: Posten, Chen, Publisher: SPRINGER-VERLAG BERLIN, Pages: 59-87

Mathematical modeling is becoming ever more important to assess the potential, guide the design, and enable the efficient operation and control of industrial-scale microalgae culture systems (MCS). The development of overall, inherently multiphysics, models involves coupling separate submodels of (i) the intrinsic biological properties, including growth, decay, and biosynthesis as well as the effect of light and temperature on these processes, and (ii) the physical properties, such as the hydrodynamics, light attenuation, and temperature in the culture medium. When considering high-density microalgae culture, in particular, the coupling between biology and physics becomes critical. This chapter reviews existing models, with a particular focus on the Droop model, which is a precursor model, and it highlights the structure common to many microalgae growth models. It summarizes the main developments and difficulties towards multiphysics models of MCS as well as applications of these models for monitoring, control, and optimization purposes.

BOOK CHAPTER

Bernardi A, Nikolaou A, Meneghesso A, Morosinotto T, Chachuat B, Bezzo Fet al., 2016, High-Fidelity Modelling Methodology of Light-Limited Photosynthetic Production in Microalgae, PLOS ONE, Vol: 11, ISSN: 1932-6203

JOURNAL ARTICLE

Bernardi A, Nikolaou A, Meneghesso A, Morosinotto T, Chachuat B, Bezzo Fet al., 2016, High-Fidelity Modelling Methodology of Light-Limited Photosynthetic Production in Microalgae (vol 11, e0152387, 2016), PLOS ONE, Vol: 11, ISSN: 1932-6203

JOURNAL ARTICLE

Faust JMM, Fu J, Chachuat B, Mitsos Aet al., 2016, Optimization of dynamic systems with rigorous path constraint satisfaction, Editors: Kravanja, Bogataj, Publisher: ELSEVIER SCIENCE BV, Pages: 643-648

BOOK CHAPTER

Nikolaou A, Booth P, Gordon F, Yang J, Matar O, Chachuat Bet al., 2016, Multi-Physics Modeling of Light-Limited Microalgae Growth in Raceway Ponds, IFAC PAPERSONLINE, Vol: 49, Pages: 324-329, ISSN: 2405-8963

JOURNAL ARTICLE

Nikolaou A, Hartmann P, Sciandra A, Chachuat B, Bernard Oet al., 2016, Dynamic coupling of photoacclimation and photoinhibition in a model of microalgae growth, JOURNAL OF THEORETICAL BIOLOGY, Vol: 390, Pages: 61-72, ISSN: 0022-5193

JOURNAL ARTICLE

Paulen R, Villanueva ME, Chachuat B, 2016, Guaranteed parameter estimation of non-linear dynamic systems using high-order bounding techniques with domain and CPU-time reduction strategies, IMA JOURNAL OF MATHEMATICAL CONTROL AND INFORMATION, Vol: 33, Pages: 563-587, ISSN: 0265-0754

JOURNAL ARTICLE

Peric ND, Villanueva ME, Chachuat B, 2016, Set-valued integration of uncertain dynamic systems with sensitivity analysis capability, Editors: Kravanja, Bogataj, Publisher: ELSEVIER SCIENCE BV, Pages: 1165-1170

BOOK CHAPTER

Sun M, Chachuat B, Pistikopoulos EN, 2016, Design of multi-parametric NCO tracking controllers for linear dynamic systems, COMPUTERS & CHEMICAL ENGINEERING, Vol: 92, Pages: 64-77, ISSN: 0098-1354

JOURNAL ARTICLE

Sun M, Villanueva ME, Chachuat B, Pistikopoulos ENet al., 2016, Strategies towards the robust multi-parametric control of continuous-time systems, Pages: 355-357

CONFERENCE PAPER

Ulmasov D, Baroukh C, Chachuat B, Deisenroth MP, Misener Ret al., 2016, Bayesian Optimization with Dimension Scheduling: Application to Biological Systems, Publisher: ELSEVIER SCIENCE BV

WORKING PAPER

Bernardi A, Nikolaou A, Meneghesso A, Chachuat B, Morosinotto T, Bezzo Fet al., 2015, A Framework for the Dynamic Modelling of PI Curves in Microalgae, 12TH INTERNATIONAL SYMPOSIUM ON PROCESS SYSTEMS ENGINEERING AND 25TH EUROPEAN SYMPOSIUM ON COMPUTER AIDED PROCESS ENGINEERING, PT C, Vol: 37, Pages: 2483-2488, ISSN: 1570-7946

JOURNAL ARTICLE

Bernardi A, Nikolaou A, Meneghesso A, Morosinotto T, Chachuat B, Bezzo Fet al., 2015, Using Fluorescence Measurements to Model Key Phenomena in Microalgae Photosynthetic Mechanisms, ICHEAP12: 12TH INTERNATIONAL CONFERENCE ON CHEMICAL & PROCESS ENGINEERING, Vol: 43, Pages: 217-222, ISSN: 1974-9791

JOURNAL ARTICLE

Chachuat B, Houska B, Paulen R, Peric N, Rajyaguru J, Villanueva MEet al., 2015, Set-Theoretic Approaches in Analysis, Estimation and Control of Nonlinear Systems, 9th IFAC Symposium on Advanced Control of Chemical Processes ADCHEM 2015, Publisher: ELSEVIER SCIENCE BV, Pages: 981-995, ISSN: 2405-8963

CONFERENCE PAPER

Fu J, Faust JMM, Chachuat B, Mitos Aet al., 2015, Local optimization of dynamic programs with guaranteed satisfaction of path constraints, AUTOMATICA, Vol: 62, Pages: 184-192, ISSN: 0005-1098

JOURNAL ARTICLE

Houska B, Villanueva ME, Chachuat B, 2015, STABLE SET-VALUED INTEGRATION OF NONLINEAR DYNAMIC SYSTEMS USING AFFINE SET-PARAMETERIZATIONS, SIAM JOURNAL ON NUMERICAL ANALYSIS, Vol: 53, Pages: 2307-2328, ISSN: 0036-1429

JOURNAL ARTICLE

Nikolaou A, Bernardi A, Meneghesso A, Bezzo F, Morosinotto T, Chachuat Bet al., 2015, A model of chlorophyll fluorescence in microalgae integrating photoproduction, photoinhibition and photoregulation, JOURNAL OF BIOTECHNOLOGY, Vol: 194, Pages: 91-99, ISSN: 0168-1656

JOURNAL ARTICLE

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