Frequency-Shaping Sliding Mode Control of High-Speed Micro-Meter-Precision Active Bearing Systems
碩士 === 國立成功大學 === 機械工程學系碩博士班 === 93 === The Frequency-Shaping Sliding Mode Control (FSSMC) for high-speed active magnetic bearing (AMB) is synthesized. The controller is designed on the basis of the equation of motion of the magnetic bearing system, which composed the dynamics of the electrical sub...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2005
|
| Online Access: | http://ndltd.ncl.edu.tw/handle/79273351107189100825 |
| Summary: | 碩士 === 國立成功大學 === 機械工程學系碩博士班 === 93 === The Frequency-Shaping Sliding Mode Control (FSSMC) for high-speed active magnetic bearing (AMB) is synthesized. The controller is designed on the basis of the equation of motion of the magnetic bearing system, which composed the dynamics of the electrical sub-system and mechanical sub-system. By linear quadratic, optimal projection and frequency shaping methodology, FSSMC is proved to be asymptotica-lly stable as long as the uncertainties of system parameters are bounded. The main purpose of frequency-shaping design is to avoid excitation of high-order dynamics of the rotating spindle so that the effect of a low-pass filter is presented. For the AMB is Linear Parameter Varying (LPV) system, the Kharitonov’s Theorem is employed to examine the stability under variation of rotational speed. It is proved that the equivalent control for the speed-dependent AMB system is robust. The simulation results show that FSSMC performs rapid response to regulate the deviation of high-speed spindle within 1 um .
|
|---|