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力士樂放大器是自動(dòng)控制系統(tǒng)中的一個(gè)重要組成單元，和電動(dòng)執(zhí)行機(jī)構(gòu)配套，組成比例式電動(dòng)控制機(jī)構(gòu)，可廣泛用于電力、冶金、化工、輕工等工業(yè)部門的自動(dòng)控制系統(tǒng)中。它可與ＤＤＺ－Ｓ系列電動(dòng)執(zhí)行機(jī)構(gòu)配套， 也可作為一個(gè)通用單元，應(yīng)用在其它類型的電動(dòng)執(zhí)行機(jī)構(gòu)上。 與其它類型的伺服放大器比較，有如下特點(diǎn)： 1.電路采用智能控制系統(tǒng)對(duì)輸入電流與反饋電流進(jìn)行采樣、比較，依據(jù)它們的差值大小對(duì)電機(jī)進(jìn)行正反轉(zhuǎn)控制。 2.系統(tǒng)對(duì)死區(qū)和精度進(jìn)行自動(dòng)調(diào)節(jié)，使控制品質(zhì)最優(yōu)。 3.也可手動(dòng)調(diào)節(jié)死區(qū)大小以適應(yīng)現(xiàn)場(chǎng)實(shí)際要求。 4.具有輸入信號(hào)斷路或小于一定值、位置反饋信號(hào)斷路或小于一定值、反饋信號(hào)不跟隨或反向變化大于一定值或固態(tài)繼電器輸出短路時(shí)，系統(tǒng)自動(dòng)保護(hù)防止執(zhí)行機(jī)構(gòu)動(dòng)作錯(cuò)誤的功能以及開路報(bào)警、斷電抱閘等功能。
力士樂放大器是用來(lái)控制伺服力士樂比例閥的一種型號(hào)放大器。
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