@inproceedings{KrollSSCI2011TSK, abstract = {Models are commonly derived and their performance is assessed wrt. minimal prediction error on a closed data set. However, if no perfect model can be used, the degrees of freedom in modeling should be used to adjust the model to application-specific metrics. For model-based controller design, control-oriented performance metrics (e.g. performance wrt. to control-critical properties) are important, but not primarily prediction (i.e. prognosis- and simulation-oriented) ones. This motivates the derivation of control-specific models. The contribution introduces structured and quantitative measures on "model suitability for control" for the class of affine dynamic Takagi-Sugeno models. A method is suggested that derives control-specific dynamic models from a physical model given as a set of nonlinear differential equations. Within a case study, the proposed method demonstrates its significance: Using control-specific models improves control performance metrics such as set-point tracking quality, stability region and energy efficiency.}, address = {Paris, France}, author = {Kroll, Andreas and Dürrbaum, Axel}, booktitle = {CICA 2011 IEEE Symposium on Computational Intelligence in Control and Automation}, interhash = {29ee47b9b69180a8af57a3cdf81281e0}, intrahash = {18d0b3bec62d3810613f240dc19df603}, language = {english}, month = {April 11-15}, mrtnote = {peer, FuzzyIdControl, talk:Dürrbaum}, organization = {IEEE Symposium Series on Computational Intelligence}, pages = {23--30}, title = {On Control-specific Derivation of Affine Takagi-Sugeno Models from Physical Models: Assessment Criteria and Modeling Procedure}, url = {http://www.ieee-ssci.org/}, year = 2011 } @inproceedings{Duerrbaum-2015-SysID, abstract = {Optimal Experiment Design (OED) is a well-developed concept for regression problems that are linear-in-their-parameters or for linear dynamical models. In case of nonlinear Takagi-Sugeno models either non-model-based experiment design or OED restricted to the local model parameters has been examined. This article proposes a joint design of local model and partition parameters that bases on the Fisher Information Matrix (FIM). For this purpose, a symbolic description of the joint FIM is derived. Its heterogeneous structure can make it badly conditioned, complicating computation of the determinant for D-optimal design. This problem is relaxed using determinant decomposition. A theoretical analysis and a case study show that experiment design for local model and partition parameters may significantly differ from each other.}, address = {Beijing, China}, author = {Kroll, Andreas and Dürrbaum, Axel}, booktitle = {Proceedings of the 17th IFAC Symposium on System Identification ({SysID})}, doi = {doi:10.1016/j.ifacol.2015.12.333}, interhash = {c8b8e8d219667b0df23b145097939fd4}, intrahash = {a62f4bcd0dac434df35ebba90261698d}, language = {english}, month = {October 19-21}, mrtnote = {peer,talk:Dürrbaum,oedg}, pages = {1427 -- 1432}, title = {On joint optimal experiment design for identifying partition and local model parameters of Takagi-Sugeno models}, year = 2015 }