以DSP為主之電動式振動機數位化控制

Abstract

傳統的電動式振動機測試系統主要是由線性功率放大器予以供電激勵，優點是諧波小，缺點是效率低、體積大，重量重。因此本論文就是要改善其缺點，採用全橋電路架構及使用TI的TMS320F2812 DSP模組電路以全數位化來設計控制器，而在實作上空白時間在高頻會對其電流追隨影響其大，故藉由本論文所提之空白時間補償控制器補償後，使其達到和線性功率放大電路有其同樣的輸出性能，最後並以PSIM模擬軟體及實作來驗證確實有達到其目地。

The conventional electrodynamic system is fed by linear amplifier with the advantage of low output voltage harmonics and with the disadvantage of low efficiency, large volume and weight. In order to improve the amplifier performance, the digital switch-mode amplifier is used in this thesis to yield the similar out performance. The simulation and experimental results also demonstrates the proposed digital switch-mode amplifier.