Sökning: "LuGre Model"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden LuGre Model.

  1. 1. A Friction Model for Laminator Nips

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

    Författare :Stefan Oros; [2015]
    Nyckelord :friction; LuGre; modelling; Stribeck; sliding; carton; Technology and Engineering;

    Sammanfattning : The main objective for the thesis project is to find a suitable mathematical model of the velocity dependent friction force that arises between the nip roller and the carton material in the laminator at slip, in order to enable realistic simulations of the nip in the laminator. Theoretically, the LuGre model is found to contain the necessary physical properties for the actual situation. LÄS MER

  3. 2. Online Identification of Friction Coefficients in an Industrial Robot

    Uppsats för yrkesexamina på avancerad nivå, Institutionen för systemteknik

    Författare :Martin Längkvist; [2009]
    Nyckelord :industrial robot; friction; offline and online parameter identification; static Lugre friction model; friction compensation;

    Sammanfattning : All mechanical systems with moving parts are affected by friction, including industrial robots. Being able to design an accurate friction model would further increase the performance of todays robots. Friction is a complex dynamic phenomena that is constantly changing depending on the state and environment of the robot. LÄS MER

  4. 3. Model-based Friction Compensation

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

    Författare :Timothée Basson; Julien Lescot; [2009]
    Nyckelord :dSPACE; Limit Cycle; Furuta Pendulum; LuGre Model; Friction Compensation; Technology and Engineering;

    Sammanfattning : Friction is present in all mechanical systems and causes a wide range of problems for control. The development of model-based strategies accounting for Friction in the designed control has been a vast area of Research since these last decades. LÄS MER

  5. 4. Model-based Friction Compensation for the Furuta Pendulum using the LuGre Model

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

    Författare :Thomas Dietz; [2006]
    Nyckelord :LuGre Model; Dahl Model; Colomb Model; Friction Compensation; Friction Observeration; Furuta Pendulum; Limit Cycle.; Technology and Engineering;

    Sammanfattning : Friction is present in all mechanical systems and causes a wide range of problems for control. The development of friction models and methods to account for friction in control has been an active research area for many years. A promising friction model that is capable of describing a wide array of observed friction phenomena is the LuGre model. LÄS MER

  7. 5. Friction Compensation by the use of Friction Observer

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

    Författare :Mikael Janiec; [2004]
    Nyckelord :Technology and Engineering;

    Sammanfattning : The deteriorating effects of friction on the control of mechanical systems is a major problem in a multitude of applications such as high-performance robotics and pointing systems. This thesis aims at improving control by using a nonlinear friction observer to detect friction in the system and use this information to modify the control input. LÄS MER