點(diǎn)擊圖片查看大圖
設(shè)計(jì)思路：一是測(cè)當(dāng)前的電流值;二是根據(jù)電流過載倍數(shù)分段;三是計(jì)算出隨實(shí)時(shí)電流變化的保護(hù)時(shí)間(根據(jù)電流過載倍數(shù));四是按固定時(shí)間延時(shí)保護(hù)。
廈門岳航計(jì)算機(jī)工程有限公司
聯(lián)系人：李素云
企業(yè)QQ：2851195446，2851195466
手機(jī)：18965423501
座機(jī)：0592-5165501
設(shè)計(jì)缺點(diǎn)：這是一個(gè)時(shí)間的累積過程，只能估計(jì)熱量的變化，不能反映電機(jī)熱量的實(shí)時(shí)變化(忽略了電流上升的升溫過程)，需經(jīng)反復(fù)實(shí)驗(yàn)得程序流程圖如圖3。
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圖3 軟件流程圖
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