本研究主要針對本實驗室所研發的盤型超音波致動器，提出以系統鑑別(System Identification) 之理論及自行建構的假性隨機二進位序列 (Pseudo Random Binary Sequence；PRBS) 硬體電路產生掃頻訊號實現致動器動態電性鑑別，進而得出致動器之動態等效電路及等效電容，並分析致動器結構改變時之動態及靜態效應，及其所需匹配之串聯電感，經過實際測試之後驗證了本文方法之可行性。
本實驗利用PRBS硬體電路對致動器進行掃頻，利用儲存式示波器儲存系統輸入及輸出資料，而後將資料送入經由Matlab套裝軟體所撰寫之程中進行分析的工作。本文提供了一個簡單便宜之臨場動態掃頻機制，其有別於昂貴的阻抗分析儀或頻譜分析儀，但卻又不失量測精度與結果；且此實驗方法可以針對馬達、動力機械系統及電路系統等不同的對象掃頻以取得系統動態電性特性，故應用範圍廣泛。

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