Naslov
Design of Normal Force Control for a Pin-on-Disk Tribometer including Active and Passive Suppression of Vertical Vibrations

Autori
Pavković, Danijel ; Kranjčević, Nenad ; Kostelac, Milan

Izvornik
Automatika : časopis za automatiku, mjerenje, elektroniku, računarstvo i komunikacije (0005-1144) 54 (2013), 3; 364-375

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Vibration suppression; normal force control; pin-on-disk tribometer

Sažetak
This paper presents the design of a computer-controlled pin-on-disk tribometer for friction characterization of various friction sliding pairs. The tribometer 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 compensate for the unevenness of the rotating disk surface and associated 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 a dedicated leaf spring suspension system is designed. The effectiveness of the proposed system of vertical vibrations damping is verified experimentally.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA