Normal force control for a pin-on-disk tribometer including active or passive suppression of vertical vibrations

Pavković, Danijel and Kranjčević, Nenad and Kostelac, Milan and Herold, Zvonko and Deur, Joško (2012) Normal force control for a pin-on-disk tribometer including active or passive suppression of vertical vibrations. = Normal force control for a pin-on-disk tribometer including active or passive suppression of vertical vibrations. In: 2012 IEEE International Conference on Control Applications, CCA 2012, 03-05.10.2012., Dubrovnik, Croatia.

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Pavković, Danijel_Normal force control for a pin-on-disk tribometer including active or passive suppression of vertical vibrations.pdf - Published Version
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Official URL: https://doi.org/10.1109/CCA.2012.6402697

Abstract

This paper presents the design of a computer-controlled pin-on-disk tribometer for friction characterization of various sliding pairs. The pin-on-disk setup comprises two high-bandwidth servomotors for the control of the rotating disk and the normal load-related spindle drive, as well as a high-precision tri-axial piezoelectric force sensor for normal and tangential forces measurement. Since the spindle drive system is characterized by notable compliance effects, the normal force cascade control system is designed with the aim of vertical vibrations active damping. In order to account for notable unevenness of the rotating disk surface and related high-level perturbations in the specimen normal force, the normal force control system is extended with a feedforward compensator of the disk unevenness disturbance, and, in particular, a dedicated leaf spring suspension system is designed. The effectiveness of the proposed system of vertical vibrations damping is verified experimentally.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): active damping; feed-forward compensator; friction characterization; high bandwidth; high-precision; normal forces; piezoelectric force sensors; pin on disk; pin-on-disk tribometers; spindle drives; spring suspensions; tangential force; vertical vibrations; cascade control systems; damping; rotating disks; force control
Subjects: TECHNICAL SCIENCE
Indexed in Web of Science: Yes
Indexed in Current Contents: No
Citations JCR: 1 (12.09.2018.)
Date Deposited: 04 May 2015 10:35
Last Modified: 10 Jan 2019 14:46
URI: http://repozitorij.fsb.hr/id/eprint/3861

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