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竹風(fēng)涼
巧者勞,智者憂(yōu),無(wú)能者,無(wú)所求。蔬食者遨游,泛若不系之舟。
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樓主  發(fā)表于: 2018-03-12 16:51
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用壓力變送器的電流信號,通過(guò)s7-200的PID控制變頻器。調節管道壓力,
如同,使用自帶PID向導,自動(dòng)計算出來(lái)的參數波動(dòng)太大,幾乎不能用,懷疑是采樣值有點(diǎn)大,自動(dòng)計算時(shí)候采樣值最小是1s,而手動(dòng)編程卻可以設定為0.1s。
請教如何使用向導自動(dòng)調節。
手動(dòng)編程參數,比例增益0.8,積分時(shí)間1分,微分時(shí)間0,采樣時(shí)間0.1s,使用比較平穩
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明維修
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1樓  發(fā)表于: 2018-03-18 16:30
PV波動(dòng)大了點(diǎn),做濾波試試看

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