Abstract
In this paper, the mathematical model of low frequency electromagnetic vibration platform is established on the basis of its mechanical structure and electrical structure. Its frequency response characteristics are also analyzed in detail. The correctness of the mathematical model is verified by a lot of testing data. Subsequently, nonlinear factors of the vibration platform are discussed, including magnetic field's nonlinear, moving-coil response and nonlinear output of power amplifiers, and so on. These factors lead to a lot of harmonic vibration and severe vibration waveform distortion. Some measures to decrease the magnetic field's nonlinear and the effect of moving-coil response are proposed for the low frequency electromagnetic vibration platform.
| Original language | English |
|---|---|
| Pages (from-to) | 70-74 |
| Number of pages | 5 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5253 |
| DOIs | |
| State | Published - 2003 |
| Event | Fifth International Symposium on Instrumentation and Control Technology - Beijing, China Duration: 24 Oct 2003 → 27 Oct 2003 |
Keywords
- Low frequency electromagnetic vibration platform
- Mathematical model
- Waveform distortion
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