@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,oed}, pages = {1427 -- 1432}, title = {On joint optimal experiment design for identifying partition and local model parameters of Takagi-Sugeno models}, year = 2015 } @article{2016-AS_AK_-IJFS-TSController, abstract = {Often models are used for controller design that was identified under the objective to well approximate the system under study. In this paper, a scheme for identifying discrete-time locally affine Takagi -- Sugeno (TS) models is presented, which better reflects the dedicated model use for designing a TS controller. For this purpose, after an initial open-loop experiment and controller design step, additional experiments are carried out in closed loop, each followed by an identification and controller design step. The deployed TS controllers are of parallel distributed compensator type but augmented by parallel drift and steady-state error compensation. The focus in this work is on a complete method that is simple and usable for real-world applications. To illustrate the practicality of the method, it is demonstrated on a laboratory-scale three-tank system.}, author = {Schrodt, Alexander and Kroll, Andreas}, doi = {10.1007/s40815-016-0290-x}, interhash = {c2aa345ebc8a74bf51f96746753528b9}, intrahash = {7ff5788ce25791805fd9245a47a405ea}, journal = {International Journal of Fuzzy Systems}, language = {english}, mrtnote = {FuzzyIdControl,peer}, number = 6, owner = {duerrbaum}, pages = {1978-1988}, title = {On Iterative Closed-Loop Identification Using Affine Takagi-Sugeno Models and Controllers}, url = {http://link.springer.com/article/10.1007/s40815-016-0290-x}, volume = 19, year = 2017 } @inproceedings{Schulte2010AAC, abstract = {Hydrostatic transmissions, also called hydrostatic gears, have been widely used in mobile working machines and off-road vehicles such as construction and agricultural machines. This kind of transmission offers important advantages like continuously variable transmission with high power density, maximum tractive force at low speeds and reversing without changing gear. The automatic electronic control of hydrostatic transmissions, which depend on a number of measurable values, has become more common in industrial practice. To ensure the reliability and safety at least a two-channel redundant system for the measuring channels is required. In this paper, a general model-based approach using a Takagi-Sugeno (T-S) fuzzy observer for analytical redundancy of the oil pressure measuring process in hydrostatic transmissions is developed. It has been shown by experimental results that this approach can be used to estimate the pressure values under varying load conditions and different driving situations.}, address = {Munich, Germany}, author = {Schulte, Host and Gerland, Patrick}, booktitle = {IFAC Symposium Advances in Automotive Control (AAC)}, editor = {IFAC}, interhash = {ae29fd04562a285e29c2159c3b1c1413}, intrahash = {0d0a3668fe3d1aa59d09b21793479478}, language = {english}, month = {July, 11 - 14}, mrtnote = {peer}, organization = {IFAC}, owner = {duerrbaum}, title = {Observer-based estimation of pressure signals in hydrostatic transmissions}, year = 2010 }