### Abstract

The aim of this paper is to fit the friction compensation problem in the field of modern polytopic and Linear Matrix Inequality (LMI) based control design methodologies. The paper proves that the exact Tensor Product (TP) type polytopic representations of most commonly utilized friction models such as Coulomb, Stribeck and LuGre exist. The paper also determines and evaluates these TP models via a TP model transformation. The conceptual use of the TP model of the friction is demonstrated via a complex control design problem of a 2D aeroelastic wing section. The paper shows how the friction model and the model of the aeroelastic wing section can be merged and transformed to a TP type polytopic model - by TP model transformation - whereupon LMI based control performance optimization can immediately be executed to yield an observer based output feedback control solution to given specifications. The example is evaluated via numerical simulations.

Original language | English |
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Pages (from-to) | 127-145 |

Number of pages | 19 |

Journal | Acta Polytechnica Hungarica |

Volume | 12 |

Issue number | 4 |

Publication status | Published - Jul 23 2015 |

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### Keywords

- Friction compensation
- LMI-based multi-objective control
- TP model transformation
- qLPV systems

### ASJC Scopus subject areas

- Engineering(all)

### Cite this

*Acta Polytechnica Hungarica*,

*12*(4), 127-145.