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Design of a high speed test rig for bearing and rotordynamic research
2004 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This thesis describes the information and drawings that the chosen design is based on. The main assignment is to design a test rig for rotor dynamic and bearings measurements. From start it was a desire to use magnetic bearings to support the main shaft in the rig. The magnetic bearing technology is relative young and very expensive compared to conventionally load carriers. The bearings levitate the shaft with a strong magnetic field and consequently there is no mechanical contact between the shaft and the bearing. This technique requires a fast and well tuned closed loop control system though the system is unstable. In the chosen machine design, one of the magnetic bearings is also used as a magnetic force exciter instead of a load supporting bearing. In the end of this work it became a fact that detailed knowledge about the dynamic behaviour and limitations of the magnetic bearings are essential to be able to design the shaft with the desired performance. That knowledge was not available and therefore is further analysis necessary before building this rig.

Place, publisher, year, edition, pages
Keyword [en]
Technology, test rig, design, magnetic bearings
Keyword [sv]
URN: urn:nbn:se:ltu:diva-58929ISRN: LTU-EX--04/197--SELocal ID: f7b5f34e-14bf-4d65-bb17-0dd6ee04d44bOAI: diva2:1032317
Subject / course
Student thesis, at least 30 credits
Educational program
Mechanical Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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