Publications

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Journal Publications:

  1. R. A. González, K. Classens, C. R. Rojas, J. S. Welsh, and T. Oomen, “Identification of Additive Continuous-time Systems in Open and Closed-loop”, accepted for publication in Automatica. [arXiv]
  2. K. Classens, M. Schoukens, T. Oomen, and J.P. Noël, “Locating nonlinearities in mechanical systems: A frequency-domain dynamic network perspective”, Mechanical Systems and Signals Processing, vol. 244,. p. 112124, 2025. DOI: 10.1016/j.ymssp.2024.112124 [pdf]
  3. R. A. González, K. Classens, C. R. Rojas, J. S. Welsh, and T. Oomen, “Statistical Analysis of Block Coordinate Descent Algorithms for Linear Continuous-time System Identification”, IEEE Control Systems Letters (L-CSS), vol. 99, p. 103170, 2024. DOI: 10.1109/LCSYS.2024.3389939 [arXiv]
  4. L. Aarnoudse, J. Kon, K. Classens, M. v. Meer, M. Poot, P. Tacx, N. Strijbosch, and T. Oomen, “Cross-Coupled Iterative Learning Control: A Computationally Efficient Approach Applied to an Industrial Flatbed Printer”, IFAC Mechatronics, vol. 99, p. 103170, 2024. DOI: 10.1016/j.mechatronics.2024.103170 [pdf | arXiv]
  5. M. Floren, K. Classens, T. Oomen, and  J.P. Noël, “Feedback Linearisation of Mechanical Systems using Data-driven Models”, Journal of Sound and Vibration, p. 1118335, 2024. DOI: 10.1016/j.jsv.2024.118335 [arXiv]
  6. K. Classens, J. van de Wijdeven, W.P.M.H. Heemels, and  T. Oomen, “Opportunities of Digital Twins for High-tech Systems: From Fault Diagnosis and Predictive Maintenance to Control Reconfiguration”, Mikroniek, no. 5, pp. 5-12, 2023. [pdf]
  7. K. Classens, T. Hafkamp, S. Westbeek, J. J. C. Remmers, and S. Weiland, “Multiphysical modeling and optimal control of material properties for photopolymerization processes”, Additive Manufacturing, vol. 38, p. 101520, 2021. DOI: 10.1016/j.addma.2020.101520 [pdf]
  8. M. J. Koopaee, C. Pretty, K. Classens, and X. Chen, “Dynamical Modeling and Control of Modular Snake Robots with Series Elastic Actuators for Pedal Wave Locomotion on Uneven Terrain”, Journal of Mechanical Design, vol. 142, no. 3, pp. 031120-1-031120-11, 2020. DOI: 10.1115/1.4044691. [pdf]

Peer-reviewed Conference Publications:

  1. K. Classens*, T. Ickenroth*, J. van de Wijdeven, W. P. M. H. Heemels, and T. Oomen, “Optimal Fault Detection for Closed-Loop Linear Uncertain Systems”, in 63rd IEEE Conference on Decision and Control, Milan, Italy, 2024, *Equal contribution [pdf]
  2. K. Classens, W. P. M. H. Heemels, and T. Oomen, “Direct Shaping of Minimum and Maximum Singular Values: An H–/H∞ Synthesis Approach for Fault Detection Filters”, in Proceedings of the IFAC 22nd Triennial World Congres, Yokohama, Japan, 2023. DOI: 10.1016/j.ifacol.2023.10.412 [pdf | arXiv]
  3. L. Aarnoudse, J. Kon, K. Classens, M. v. Meer, M. Poot, P. Tacx, N. Strijbosch, and T. Oomen, “Cross-Coupled Iterative Learning Control for Complex Systems: A Monotonically Convergent and Computationally Efficient Approach”, in 61th IEEE Conference on Decision and Control, Cancun, Mexico, 2022. DOI: 10.1109/CDC51059.2022.9993408 [pdf | arXiv]
  4. K. Classens, M. Mostard, J. van de Wijdeven, W.P.M.H. Heemels, and T. Oomen, “Fault Detection for Precision Mechatronics: Online Estimation of Mechanical Resonances”, in 2nd Modeling, Estimation and Control Conference (MECC 2022), Jersey City, New Jersey, USA, 2022. DOI: 10.1016/j.ifacol.2022.11.271 [pdf]
  5. K. Classens, S. Verbeek, W.P.M.H. Heemels, and T. Oomen, “Joint Estimation of Additive and Parametric Faults: A Model-based Fault Diagnosis Approach Towards Predictive Maintenance”, in 11th IFAC Symposium on Fault Detection, Supervision, and Safety of Technical Processes (SAFEPROCESS 2022), Pafos, Cyprus, 2022. DOI: 10.1016/j.ifacol.2022.07.146 [pdf]
  6. K. Classens, W. P. M. H. Heemels, and T. Oomen, “Digital Twins in Mechatronics: From Model-based Control to Predictive Maintenance”, in 2021 IEEE International Conference on Digital Twins and Parallel Intelligence (DTPI), Beijing, China, 2021. DOI: 10.1109/DTPI52967.2021.9540144 [pdf]
  7. K. Classens, W. P. M. H. Heemels, and T. Oomen, “Closed-loop Aspects in MIMO Fault Diagnosis with Application to Precision Mechatronics”, in 2021 IEEE American Control Conference, New Orleans, Louisiana, USA, 2021. DOI: 10.23919/ACC50511.2021.9482785 [pdf]
  8. K. Classens, T. Hafkamp, S. Westbeek, J. J. C. Remmers, and S. Weiland, “Real-Time Nonlinear Tracking Control of Photopolymerization for Additive Manufacturing”, in 2021 IEEE American Control Conference, New Orleans, Louisiana, USA, 2021. DOI: 10.23919/ACC50511.2021.9483091 [pdf]
  9. K. Classens, W. P. M. H. Heemels, and T. Oomen, “A Closed-Loop Perspective on Fault Detection for Precision Motion Control: With Application to an Overactuated System”, in 2021 IEEE International Conference on Mechatronics, Kashiwa, Japan, 2021. DOI: 10.1109/ICM46511.2021.9385700 [pdf]
  10. K. Classens, M. J. Koopaee, C. Pretty, S. Weiland, and X. Chen, “Dynamical Modeling and Gait Optimization of a 2-D Modular Snake Robot in a Confined Space”, in Proceedings of the IFAC 21st Triennial World Congress, Berlin, Germany, 2020. DOI: 10.1016/j.ifacol.2020.12.2648 [pdf]
  11. M. J. Koopaee, C. Pretty, K. Classens, and X. Chen, “Dynamical Modelling and Control of Snake-Like Motion in Vertical Plane for Locomotion in Unstructured Environments”, in 15th IEEE/ASME International Conference on Mechatronic and Embedded Systems and Applications, vol. 9, Anaheim, California, USA, 2019. DOI: 10.1115/DETC2019-97227 [pdf]

Miscellaneous Conference Publications:

  1. K. Classens, W.P.M.H. Heemels, and T. Oomen, “What does Fault Detection and Isolation have to offer for Precision Motion Systems?”, in Third Euspen Special Interest Group Meeting on Precision Motion Systems & Control, ‘s-Hertogenbosch, The Netherlands, 2024. [pdf | poster]
  2. M. van der Hulst, K. Classens, R.A. González, N. Dirkx, J. van de Wijdeven, and T. Oomen, “Modal Identification for Multivariable Motion Systems”, in Third Euspen Special Interest Group Meeting on Precision Motion Systems & Control, ‘s-Hertogenbosch, The Netherlands, 2024. [pdf | poster]
  3. K. Classens, M. van Dael, M. van Haren, M. van der Hulst, T. Ickenroth, M. van Meer, and T. Oomen, “Fault Detection for Mechatronics”, in 2024 Precisiebeurs, ‘s-Hertogenbosch, The Netherlands, 2024. [poster]
  4. T. Ickenroth, K. Classens, J. van de Wijdeven, W.P.M.H. Heemels, and T. Oomen, “On Robust Fault Detection for Precision Mechatronics”, in 43rd Benelux Meeting on Systems and Control, Blankenberge, Belgium, 2024. [pdf]
  5. R. A. González, K. Classens, C. R. Rojas, J. S. Welsh, and T. Oomen, “Additive Continuous-time Identification: With Application to Modal Mechanical Systems”, in 43rd Benelux Meeting on Systems and Control, Blankenberge, Belgium, 2024. [pdf]
  6. K. Classens, W. P. M. H. Heemels, and T. Oomen, “Fault Diagnosis for High-tech Precision Mechatronics: With Application to a Prototype Wafer Stage”, in DSPE 5th Conference on Precision Mechatronics, 150, Sint-Michielsgestel, The Netherlands, 2023. [pdf | poster]
  7. K. Classens, W. P. M. H. Heemels, and T. Oomen, “Fault Diagnosis for Precision Mechatronics”, in JSPS-NWO Seminar Research Network on Learning in Machines, 17-18, Tokyo, Japan, 2023. [pdf]
  8. T. Oomen, L. Aarnoudse, L. Blanken, K. Classens, M. van Dael, N. Dirkx, R. Gonzáles, M. van Haren, J. Kon, M. van Meer, M. Poot, P. Tacx, K. Tiels, and G. Witvoet, “Learning in Machines: From Data to Models, Control Performance, and Monitoring”, in JSPS-NWO Seminar Research Network on Learning in Machines, 17-18, Tokyo, Japan, 2023. [pdf]
  9. K. Classens, W. P. M. H. Heemels, and T. Oomen, “On Nullspace-based Fault Diagnosis of Complex Mechatronic Systems”, in 42nd Benelux Meeting on Systems and Control, Elspeet, The Netherlands, 2023. [pdf]
  10. K. Classens, W. P. M. H. Heemels, and T. Oomen, “Digital Twins for Precision Mechatronics: Predictive Maintenance via Fault Detection and Isolation”, in Second Euspen Special Interest Group Meeting on Precision Motion Systems & Control, ‘s-Hertogenbosch, The Netherlands, 2022. [pdf]
  11. K. Classens, W. P. M. H. Heemels, and T. Oomen, “Signal-to-noise Aspects in Closed-loop Fault Identification”, in 30th ERNSI Workshop on System Identification, poster presentation, Leuven, Belgium, 2022. [pdf]
  12. K. Classens, W. P. M. H. Heemels, and T. Oomen, “On Robust Fault Diagnosis of Complex Mechatronic Systems”, in 41st Benelux Meeting on Systems and Control, Brussels, Belgium, 2022. [pdf]
  13. K. Classens, W. P. M. H. Heemels, and T. Oomen, “Identifying Faults: A Closed-loop Perspective”, in 29th ERNSI Workshop on System Identification, poster presentation, Rennes, France, 2021. [pdf]
  14. K. Classens, W. P. M. H. Heemels, and T. Oomen, “On Closed-loop Fault Diagnosis of Complex Mechatronic Systems”, in Benelux Workshop on Systems and Control, Rotterdam, The Netherlands, 2021. [pdf]
  15. K. Classens, T. Oomen, W. P. M. H. Heemels, J. van de Wijdeven, M. van de Wal, and W. Aangenent, “Digital Twins in Control – From Fault Detection to Predictive Maintenance”, in First Euspen Special Interest Group Meeting on Precision Motion Systems & Control, Veldhoven, The Netherlands, 2020. [pdf]
  16. K. Classens, T. Oomen, W. P. M. H. Heemels, J. van de Wijdeven, M. van de Wal, and W. Aangenent, “Towards predictive maintenance via digital twinning: Bridging data-driven and model-based fault detection and isolation”, in DSPE Conference on Precision Mechatronics, Sint Michielsgestel, The Netherlands, 2020. [pdf]
  17. K. Classens, T. Hafkamp, S. Westbeek, J. J. C. Remmers, and S. Weiland, “Quadratic Tracking Control of Photopoly-merization for Additive Manufacturing”, in 39th Benelux Meeting on Systems and Control, Elspeet, The Netherlands, 2020, p. 127. [pdf]
  18. K. Classens, M. J. Koopaee, and S. Weiland, “Generalized Dynamical Modeling of 2-D Modular Snake Robots”, in 38th Benelux Meeting on Systems and Control, Lommel, Belgium, 2019, p. 161. [pdf]

Working manuscripts:

  1. K. Classens, T. Ickenroth, J. van de Wijdeven, W. P. M. H. Heemels, and T. Oomen, “Closed-loop Optimal Fault Detection for Uncertain Systems”.
  2. K. Classens, J. van de Wijdeven, W.P.M.H. Heemels, and T. Oomen, “Nullspace-based Fault Diagnosis for Closed-Loop Mechatronic Systems with Application to Semiconductor Equipment”.
  3. M. van Haren, K. Classens, L. Blanken, and T. Oomen, “Local Rational Modeling for Identification Beyond the Nyquist Frequency: Applied to a Prototype Wafer Stage”.
  4. R. A. González, K. Classens, C. R. Rojas, T. Oomen, and H. Hjalmarsson, “Finite Sample Multi-Input Multi-Output System Identification with Multisine Excitation: From Nonparametric to Parametric Models”.
  5. K. Classens, R. A. González, and T. Oomen, “Recursive Identification of Structured Systems: An Instrumental-Variable Approach Applied to Mechanical Systems”.
  6. M. Mae, M. van Haren, K. Classens, W. Ohnishi, T. Oomen, and H. Fujimoto, “Fixed-Structure Sampled-Data Feedforward Control for Multivariable Motion Systems”. [SSRN]

Thesis:

  1. K. Classens, “Fault Diagnosis for Uncertain Systems in Closed Loop: Applied to Semiconductor Equipment”, Ph.D. Thesis, Eindhoven University of Technology, Eindhoven, 2024. [pdf (compressed) | pdf]
  2. K. Classens, “Multiphysical Modeling and Control of Photopolymerization for Additive Manufacturing”, M.S. Thesis, Eindhoven University of Technology, Eindhoven, 2019. [pdf]