本公司供應全新羅克韋爾1398-DDM-150伺服驅(qū)動器ALLEN BRADLEY,價格優(yōu)惠,快速交貨,
型號
:白山2098-DSD-020-DN羅克韋爾伺服驅(qū)動器
Allen Bradley 1398-DDM-009-DN
Allen Bradley 1398-DDM-005X-NV
Allen Bradley 1398-DDM-005X-DN
Allen Bradley 1398-DDM-009X
Allen Bradley 1398-DDM-019-DN
Allen Bradley 1398-DDM-009X-DN
Allen Bradley 1398-DDM-005X
Allen Bradley 1398-DDM-005-DN
Allen Bradley 1398-DDM-005
Allen Bradley 1398-DDM-075X
Allen Bradley 1398-DDM-075
Allen Bradley 1398-DDM-010X
Allen Bradley 1398-DDM-010
Allen Bradley 1398-DDM-150
Allen Bradley 1398-DDM-020X
Allen Bradley 1398-DDM-020
Allen Bradley 1398-DDM-030X
Allen Bradley 1398-DDM-030
Allen Bradley 1398-DDM-019X-DN
Allen Bradley 1398-DDM-019X
Allen Bradley 1398-DDM-150X
Allen Bradley 1398-DDM-019
Allen Bradley 1398-DDM-009
:白山2098-DSD-020-DN羅克韋爾伺服驅(qū)動器,所示電路,按瞬時極性法判斷。設同相輸入端u+有一瞬時增量,則輸出uo為,經(jīng)電阻Rf返送至反相輸入端,使u-為,即反饋信號的瞬時極性為。其次,比較反饋信號與輸入信號的瞬時極性來判斷電路引入的是正反饋還是負反饋。當輸入信號和反饋信號不在同一節(jié)點引入(其中一個節(jié)點為基極,另一個節(jié)點為發(fā)射極,或不同輸入端)))如差動放大電路、集成運算放大電路等)時,若兩者的瞬時極性相同,則為負反饋;兩者的瞬時極性相反,則為正反饋。