DS3800HSAA1U1N
DS3800HSAA1U1N
DS3800HSAA1U1N
24小時熱線【歐先生18030229053】大量現貨,價格合理,當天打款,當天順風,即日到貨。
聯系人:歐先生(銷售工程師) 電話:0592-5709825
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福建光沃自動化設備有限公司
在我們設計調試的線材生產線中,一般采用SiemensS7-400PLC作為主控制器,粗、中軋機,預精軋機,吐絲機,夾送棍傳動采用SiemeNS直流調速裝置6RA70,精軋機采用交流變頻裝置。主軋線設兩個HMI,HMI與PLC通過以太網通訊,PLC與各傳動采用Profibus-DP網通訊,總體功能圖如下:
(1)軋線張力控制的實現方法:
棒線材軋線張力控制一般采用間接張力控制方法,即利用軋機負荷反饋計算軋機的張力。本文控制方法為利用PLC與傳動裝置之間的Profibus-DP。
(2)PLC內部的信號濾波算法:
信號濾波在功能上分為輸入信號的采樣、儲存,數據分析處理、濾波,信號輸出等環節:
1)采樣、存儲環節:PLC系統接受模擬量信號后,首先進行可控周期、可控數量的采樣,采樣采取FIFO算法,保證數據的實時性。保證在任何時間段內采集存儲的的數據都是最新、最近的。
2)數據處理排序環節:利用冒泡算法對采集的數據排序。
3)數據處理均值環節:去除N個最大值、最小值。對剩余的數據進行均值處理。控制框圖如下:
3濾波系統功能詳細介紹
考慮到數據采樣的連續性以及在特定的時間段內要保留一定數量的連續的采樣數據,在系統中定義一個FIFO數據鏈表,采樣數據按照時間順序依次進入鏈表,當鏈表數據個數N(可調)一定時,那么著N個采樣值就是一段時間內的連續采樣值。在采樣過程中從頻率根據具體情況進行調整。
采樣數據的最大值和最小值在采樣過程中有可能受到干擾,或者采集的數據與其它值有較大偏離,其采樣可靠度不如其他中間數據可靠,在運算中將規定數量(可調)的最值除去。采用冒泡算法對數據排序,然后分別除去兩端的一定個數(可調)的最大值和最小值。最后剩余的數據均值處理。
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