Sökning: "Martin Enqvist"

Visar resultat 6 - 10 av 17 avhandlingar innehållade orden Martin Enqvist.

  1. 6. Estimation of Inverse Models Applied to Power Amplifier Predistortion

    Författare :Ylva Jung; Martin Enqvist; Lennart Ljung; Torkel Glad; Mikael Sternad; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : Mathematical models are commonly used in technical applications to describe the behavior of a system. These models can be estimated from data, which is known as system identification. Usually the models are used to calculate the output for a given input, but in this thesis, the estimation of inverse models is investigated. LÄS MER

  3. 7. Inverse system identification with applications in predistortion

    Författare :Ylva Jung; Martin Enqvist; Lennart Ljung; Torkel Glad; Thomas Eriksson; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; system identification; inverse models; signal processing; power amplifiers; predistortion; communication electronics;

    Sammanfattning : Models are commonly used to simulate events and processes, and can be constructed from measured data using system identification. The common way is to model the system from input to output, but in this thesis we want to obtain the inverse of the system. LÄS MER

  4. 8. Flight Test System Identification

    Författare :Roger Larsson; Martin Enqvist; Lennart Ljung; Roy Smith; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : With the demand for more advanced fighter aircraft, relying on unstable flight mechanical characteristics to gain flight performance, more focus has been put on model-based system engineering to help with the design work. The flight control system design is one important part that relies on this modeling. LÄS MER

  5. 9. System Identification of Flight Mechanical Characteristics

    Författare :Roger Larsson; Lennart Ljung; Martin Enqvist; Jonas Sjöberg; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : With the demand for more advanced fighter aircraft, relying on relaxed stability or even unstable flight mechanical characteristics to gain flight performance, more focus has been put on model-based system engineering to help with the design work. The flight control system design is one important part that relies on this modeling. LÄS MER

  7. 10. Graybox Modelling of Ships Using Indirect Input Measurements

    Författare :Jonas Linder; Martin Enqvist; Fredrik Gustafsson; Johan Sjöberg; Magnus Mossberg; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : A ship's roll dynamics is very sensitive to changes in the loading conditions and a worst-case scenario is that the ship will capsize. Actually, the mass and center of mass are two of the most influential parameters in most mechanical systems. LÄS MER