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發電機

直流測速發電機

發布日期：2022-10-09 點擊率：9


　　直流測速發電機是一種測速元件，它把轉速信號轉換成直流電壓信號輸出。直流測速發電機廣泛地應用于自動控制、測量技術和計算機技術等裝置中。對直流測速發電機的主要要求是：
　　（1）輸出電壓要嚴格地與轉速成正比，并且不受溫度等外界條件變化的影響；
　　（2）在一定的轉速下，輸出電壓要盡可能的大；
　　（3）不靈敏區要小。
　　分類
　　直流測速發電機可分為勵磁式和永磁式兩種。勵磁式由勵磁繞組接成他勵，永磁式采用矯頑力高的磁鋼制成磁極。由于永磁式不需另加勵磁電源，也不因勵磁繞組溫度變化而影響輸出電壓，故應用較廣。
　　應用
　　在自動控制系統和計算裝置中通常作為測速元件、校正元件、解算元件和角加速度信號元件。
       

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