Print Email Facebook Twitter Estimation of Nonlinear Contributions in Human Controller Frequency Response Functions Title Estimation of Nonlinear Contributions in Human Controller Frequency Response Functions Author Wagenaar, S.E. (Student TU Delft) Pool, D.M. (TU Delft Control & Simulation) Damveld, H.J. (TU Delft Control & Simulation) van Paassen, M.M. (TU Delft Control & Simulation) Mulder, Max (TU Delft Control & Operations; TU Delft Control & Simulation) Department Control & Operations Date 2018 Abstract Traditional Frequency Response Function (FRF) estimation techniques used for analysis of Human Controller (HC) dynamics in tracking tasks assume HC dynamics to be linear, but generally do not quantify or compensate for the effects of human nonlinearities. The robust and fast Best Linear Approximation (BLA) techniques for estimating an FRF do provide such quantification of nonlinear distortions caused by Period-In-Same-Period-Out (PISPO) nonlinearities and can reduce the effect of PISPO nonlinear operations on the FRF estimate. This paper investigates the application of these BLA techniques to both measured and simulated HC data. For the simulated data, a linear HC model was deliberately extended with a symmetric PISPO deadzone nonlinear operator and a realistic level of HC “remnant” noise. Overall, both the measured and the simulated data indicate that due to the high levels of remnant noise inherent to HC data, no consistent estimate of PISPO nonlinear contributions could be made. This also means that the improvement of using BLA techniques and averaging over multiple forcing function realizations does not result in a substantial improvement over the current practice of estimating HC FRFs from repeated measurements of a single forcing function. To reference this document use: http://resolver.tudelft.nl/uuid:a3faa8a7-8823-4394-9d51-108e32504b53 DOI https://doi.org/10.1109/SMC.2018.00582 Source Proceedings of the IEEE International Conference on Systems, Man, and Cybernetics: Myazaki, Japan, 2018 Event SMC 2018: IEEE International Conference on Systems, Man, and Cybernetics, 2018-10-07 → 2018-10-10, Myazaki, Japan Part of collection Institutional Repository Document type conference paper Rights © 2018 S.E. Wagenaar, D.M. Pool, H.J. Damveld, M.M. van Paassen, Max Mulder Files PDF 2018_Wagenaar_ProcIEEE_SMC.pdf 506.72 KB Close viewer /islandora/object/uuid:a3faa8a7-8823-4394-9d51-108e32504b53/datastream/OBJ/view