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Friction Models and Friction Compensation Karl J. Åström Department of Automatic Control Lund University 1. Introduction 2. Friction Models 3. The LuGre Model 4. Effects of Friction on Control Systems 5. Friction Compensation 6. Summary Introduction ◮ Essential in Motion Control ◮ Classics Leonardo da Vinci (1452-1519 Amontons 1699 Coulomb 1785 ◮ Tribology ◮ Control ◮ Physics AFM ◮ Surface force a

https://www.control.lth.se/fileadmin/control/Education/DoctorateProgram/PhysicalModeling/Lectures/L6-FrictionModelseight.pdf - 2026-04-21

Project for Doctoral Studies in States of Consciousness (including hypnosis and dissociation) and Parapsychology Project for Doctoral Studies in States of Consciousness and Parapsychology (handledning på svenska eller engelska) As part of programmatic research on states of consciousness and anomalous psychology, my associates and I at the Center for Research on Consciousness and Anomalous Psycholo

https://www.psy.lu.se/en/sites/psy.lu.se.en/files/2017doctoralproject.pdf - 2026-04-23

Project for Doctoral Studies in States of Consciousness (including hypnosis and dissociation) and Parapsychology Project for Doctoral Studies in States of Consciousness and Parapsychology (handledning på svenska eller engelska) As part of a long-term program of research in states of consciousness and anomalous psychology, my associates and I at the Center for Research on Consciousness and Anomalou

https://www.psy.lu.se/en/sites/psy.lu.se.en/files/states_of_consciousness_and_parapsychology.doc - 2026-04-23

This book is intended as a guide to the exhibition "Treasures in Skåneland”, providing further information. The book contains a chronological survey of general and numismatic history in Skåneland during the time when coins were minted here, as well as descriptions of the coin finds on show in the exhibition. The idea is that the book will be of use to visitors in the exhibition, while also making

Schema för KURSNAMN 10 p (15 ECTS) HT -1 2002 1 Schedule for GEON05 Quaternary geology, 15 hp (15 ECTS credits) fall, Fall semester 1, 2016 GEON05: Glacial sedimentology: processes, sediments and land systems Course leader: Per Möller Teachers: PM = Per Möller; JA = Johanna Anjar; MB = Martin Bernhardson; CG = Carl Regnéll E-mail address; per.moller@geol.lu.se ; johanna.anjar@geol.lu.se; martin.be

https://www.geology.lu.se/sites/geology.lu.se/files/geon05_2016-08-29_endast_en_grupp.pdf - 2026-04-23

Purpose: In patients with hemophilia B, treatment with extended half-life (EHL) recombi-nant factor IX allows for longer dosing intervals while providing equal or superior bleeding protection compared with standard half-life products. This enables flexible, individualized treatment schedules, which reduce the burden of prophylaxis and improve patient outcomes. This analysis compared the efficacy o

Master’s Dissertation Structural Mechanics INFLUENCE OF ANNUAL RING ORIENTATION ON COMPRESSION STRENGTH PERPENDICULAR TO GRAIN IN GLULAM Report TV SM -5203 PH ILIP W A LLIN IN FLU EN C E O F A N N U A L R IN G O R IEN TA TIO N O N C O M PR ESSIO N STR EN G TH PER PEN D IC U LA R TO G R A IN IN G LU LA M PHILIP WALLIN 5203HO.indd 15203HO.indd 1 2015-06-23 15:03:362015-06-23 15:03:36 DEPARTMENT OF C

https://www.byggmek.lth.se/fileadmin/byggnadsmekanik/publications/tvsm5000/web5203.pdf - 2026-04-20

Streptococcus pyogenes (group A streptococcus) causes a variety of diseases, including acute pharyngitis, impetigo, rheumatic fever and the streptococcal toxic shock syndrome. Moreover, S. pyogenes was responsible for the classical example of a nosocomial infection, the epidemics of puerperal fever (childbed fever) that caused the death of numerous women in earlier centuries. The most extensively

This study demonstrates that a cytotoxic serum reactivity not requiring the presence of complement appears in the sera of patients with acute myelogenous leukemia. The reaction is detected upon short‐term incubation of sera in vitro with autochthonous mononuclear white blood cells from peripheral venous blood of patients at the acute stage of the disease. This reactivity was demonstrated in 18/18

Despite the recent clinical success of T cell checkpoint inhibition targeting the CTLA-4 and PD-1 pathways, many patients either fail to achieve objective responses or they develop resistance to therapy. In some cases, poor responses to checkpoint blockade have been linked to suboptimal CD28 costimulation and the inability to generate and maintain a productive adaptive anti-tumor immune response.

Recently, to reach zero emission levels, some new energy systems based on fuel cells have been developed. This paper presents a review of investigations of these systems by thermodynamics performance, mainly, energy and exergy analysis. With energy analysis, the performance of an energy conversion system cannot be effectively and accurately evaluated. But exergy analysis complements and reinforces

Disturbed haemostasis is a central finding in severe Streptococcus pyogenes infection. In particular, microthrombi are found both at the local site of infection and at distant sites. Platelets are responsible for maintaining vascular function and haemostasis. We report here that M1 protein of S. pyogenes triggers immune-mediated platelet activation and thrombus formation. M1 protein is released fr

A dry release method for fabrication of suspended nanostructures is presented. The technique has been combined with an anti-stiction treatment for fabrication of nanocantilever based nanoelectromechanical systems (NEMS). The process combines a dry release method, using a supporting layer of photoresist which is removed using oxygen ashing in a reactive ion etcher (RIE), with CHF3 plasma induced de

The nervous system is constantly infiltrated by blood-derived sentinels known as perivascular macrophages. Their immediate precursors have not yet been identified in situ and the mechanism that governs their recruitment is mostly unknown. Here, we provide evidence that CD68 (+)GR(-) monocytes can give rise to perivascular macrophages in mice suffering from endotoxemia. After adhesion to the endoth

The gene for an IgA-binding protein from a group A streptococcal strain was cloned and expressed in Escherichia coli. The IgA-binding protein, called protein Arp, was purified on IgA-Sepharose, allowing complete purification in a single step. Analysis of protein Arp by Western immunoblotting demonstrated a major IgA-binding band, with an apparent molecular weight of 42 kD. The purified protein was

This review compares the methodology of published clinical studies investigating the extended-half-life (EHL) factor VIII (FVIII) products, rFVIIIFc (efmoroctocog alfa, Elocta®/Eloctate®), BAY 94-9027 (damoctocog alfa pegol, Jivi®), BAX 855 (rurioctocog alfa pegol, Adynovate®) and N8-GP (turoctocog alfa pegol, Esperoct®) including the phase 2/3 studies, A-LONG (NCT01181128), PROTECT VIII (NCT01580