| Research Abstract |
In many magnetic levitation or suspension systems such as magnetically levitated train, magneticallynetic levitation or suspension suspended carrier, and magnetic bearing, a problem of mechanical vibration is important. Because uncertainties of modelling on controlled system affect severely the closed control system when high performances such as high speed operation or robustness against disturbance are investigated. On the other hand, H-infinity control theory-is being watched from viewpoint of robustness. Then, effectiveness of H-infinity control theory is examined in this research using experiments of flexible beam magnetic suspension.
In this research, two types of flexible beam magnetic suspension system and their instrument and control system are set up, in which FFT analyzer, impact hammer, oscilloscope, digital signal processor(DSP), personal computer, and DA/AD converter are used. Several designs of control system using H-infinity theory are made and experiments are carried out successfully.
In these results, effectiveness of H-infinity control theory to the system design is demonstrated. Moreover, fundamental knowledge on frequency weighting function are obtained.
|
