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- Publications
- Influence

Bounded Power Signal Spaces for Robust Control and Modeling

- P. Mäkilä, J. R. Partington, T. Norlander
- Mathematics
- 1999

The nonlinear space of signals allowing Wiener's generalized harmonic analysis (GHA), the linear bounded power signal spaces of Beurling, Marcinkiewicz, and Wiener, and a new linear bounded power… Expand

Defragilization in optimal design and its application to fixed structure LQ controller design

- T. Norlander, P. Mäkilä
- Mathematics, Computer Science
- IEEE Trans. Control. Syst. Technol.
- 1 July 2001

In this work, we present a general methodology to address the recently debated fragility issue in optimization-based modern control systems design. Based on this methodology we have developed a… Expand

A sampled-data theory for fixed structure LQ controller design

- T. Norlander, P. Mäkilä
- Computer Science
- 2000

The fixed structure sampled-data LQ-optimal control problem is discussed. A method is presented to design a discrete controller with fixed structure and order that minimizes a continuous quadratic ...

- 3
- 1

Dynamic threshold generators for robust fault detection in linear systems with parameter uncertainty

- Andreas Johansson, Michael Bask, T. Norlander
- Mathematics, Computer Science
- Autom.
- 1 July 2006

The problem of developing robust thresholds for fault detection is addressed. An inequality for the solution of a linear system with uncertain parameters is provided and is shown to be a valuable… Expand

Experimental dependability evaluation of a fail-bounded jet engine control system for unmanned aerial vehicles

- J. Vinter, O. Hannius, T. Norlander, P. Folkesson, J. Karlsson
- Computer Science
- International Conference on Dependable Systems…
- 28 June 2005

This paper presents an experimental evaluation of a prototype jet engine controller intended for unmanned aerial vehicles (UAVs). The controller is implemented with commercial off-the-shelf (COTS)… Expand

Parametric uncertainty in sensor fault detection for turbofan jet engine

- A. Johansson, T. Norlander
- Computer Science
- 42nd IEEE International Conference on Decision…
- 9 December 2003

A method for detecting sensor faults in a turbofan engine is presented. The proposed method consists of an observer with integral action and an adaptive detection threshold. The threshold is computed… Expand

On robust and optimal control : with real time aspects

- T. Norlander
- Mathematics
- 1997

This thesis deals with several issues in realistic design of control systems, both from a practical and a theoretical point of view. This is done in three papers which are preceded by an introduction… Expand

- 3

Control of a flotation process using LQ optimized PI controllers

- T. Norlander
- Mathematics
- 2000

PI controller design using a sampled-data fixed structure LQ optimization technique has been presented. The technique has been evaluated on a simulation model of the flotation series at Boliden's c… Expand

- 4

Bounded power signal spaces

- P.M. Makila, J. R. Partington, T. Norlander
- Mathematics
- Proceedings of the 36th IEEE Conference on…
- 10 December 1997

The nonlinear space of signals allowing Wiener's generalized harmonic analysis (GHA), the linear bounded power signal spaces of Beurling, Marcinkiewicz and Wiener, and a new linear bounded power… Expand

Parametric linear quadratic control and random delays

- P. Makila, T. Norlander
- Mathematics
- 1 November 2000

The authors derive the design equations for parametric linear quadratic control of continuous-time systems with random delays. This problem motivates a more general setup that is utilised for the… Expand