| Summary: | 碩士 === 國立臺灣大學 === 機械工程學研究所 === 89 === This thesis investigated the implementation of PC-based structure analysis hardware. Structure analysis (or System identification) is necessary in many high performance servo system designs. To experimentally achieve practical system identification requires very expensive hardware structure analyzer. With the advances in the PC-based data acquisition equipments and the dramatic lower in the microprocessor prices, it is now possible to implement the structure analyzer on a PC-based system. This thesis not only realized the PC-based structural analyzer, but also looked into the different identification techniques. A comparison between the popular swept sine method and the time-domain parameterize identification shows that swept-sine method still offers better identification on the frequency domain characteristics; however, the frequency domain fitting process might induce undesirable model mismatch. The time domain identification, on the other hand, offers more precise time domain characteristics, but with less confidence on the resultant frequency domain response. Full details on the actual implementation are presented. Some detailed identification techniques are also discussed.
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