深圳枕式包裝機的性能指標
2023-12-07(4671)次瀏覽
深圳枕式包裝機自動控制(zhi)系(xi)統(tong)的性能指(zhi)標主(zhu)要有穩(wen)定性、快速性、準確性。
1、穩定性
由于(yu)全自動(dong)(dong)包(bao)裝機(ji)自動(dong)(dong)控(kong)制系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)存在(zai)慣性,當系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)的(de)各個參數(shu)分配不當時,將(jiang)(jiang)會引起(qi)系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)的(de)振蕩而失去工作(zuo)(zuo)能(neng)力(li)。穩定(ding)(ding)(ding)性就是(shi)指動(dong)(dong)態(tai)過程的(de)振蕩傾向和系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)恢(hui)復平衡狀態(tai)的(de)能(neng)力(li)。當擾動(dong)(dong)或給(gei)定(ding)(ding)(ding)值(zhi)發生變化時,輸出(chu)量(liang)將(jiang)(jiang)會偏離原(yuan)來的(de)穩定(ding)(ding)(ding)值(zhi),依靠反饋作(zuo)(zuo)用,通過全自動(dong)(dong)包(bao)裝機(ji)自動(dong)(dong)控(kong)制系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)內(nei)部的(de)調節作(zuo)(zuo)用,系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)隨(sui)時間(jian)不斷收斂(lian),并(bing)回到(dao)原(yuan)來的(de)穩定(ding)(ding)(ding)值(zhi)或跟隨(sui)給(gei)定(ding)(ding)(ding)值(zhi)穩定(ding)(ding)(ding)下來。如果(guo)由于(yu)某種(zhong)原(yuan)因,系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)出(chu)現發散而處于(yu)不穩定(ding)(ding)(ding)狀態(tai),系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)無法工作(zuo)(zuo)。穩定(ding)(ding)(ding)性要求是(shi)系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)工作(zuo)(zuo)的(de)首要條(tiao)件。
2、快速性
由于(yu)存在慣性或(huo)能源(yuan)功率的(de)限制,全自動(dong)包裝機自動(dong)控制系(xi)統中(zhong)的(de)各(ge)種量(liang)值的(de)變化不(bu)可能突變,由一個穩態(tai)(tai)過(guo)渡到新的(de)穩態(tai)(tai),都需(xu)要定時間,即需(xu)要經(jing)歷一個過(guo)渡過(guo)程。快速性表示系(xi)統輸出量(liang)與給定值之間產生(sheng)偏(pian)差(cha)時,系(xi)統消(xiao)除偏(pian)差(cha)恢復穩態(tai)(tai)的(de)快速程度。
3、準確性
準(zhun)確性(xing)也(ye)稱靜態精度,指全自(zi)(zi)動(dong)包裝機自(zi)(zi)動(dong)控制(zhi)系(xi)(xi)(xi)統(tong)(tong)在調(diao)整過(guo)程(cheng)結束后輸出量與給定值之(zhi)間(jian)的(de)(de)偏差,表(biao)明系(xi)(xi)(xi)統(tong)(tong)的(de)(de)準(zhun)確程(cheng)度,也(ye)是衡(heng)量系(xi)(xi)(xi)統(tong)(tong)工作性(xing)能(neng)的(de)(de)重要(yao)指標。由于受控對(dui)(dui)象的(de)(de)具體情況不同,不同系(xi)(xi)(xi)統(tong)(tong)對(dui)(dui)穩(wen)、準(zhun)、快的(de)(de)要(yao)求(qiu)也(ye)各(ge)不相同。例如,隨動(dong)系(xi)(xi)(xi)統(tong)(tong)對(dui)(dui)快速性(xing)要(yao)求(qiu)很高,而(er)調(diao)速系(xi)(xi)(xi)統(tong)(tong)則對(dui)(dui)穩(wen)定性(xing)的(de)(de)要(yao)求(qiu)嚴格(ge)。同一(yi)系(xi)(xi)(xi)統(tong)(tong)性(xing)能(neng)在穩(wen)、準(zhun)、快之(zhi)間(jian)是相互制(zhi)約的(de)(de),快速性(xing)能(neng)好的(de)(de)系(xi)(xi)(xi)統(tong)(tong),有(you)(you)可能(neng)易產生振蕩;穩(wen)定性(xing)好的(de)(de)系(xi)(xi)(xi)統(tong)(tong),調(diao)整過(guo)程(cheng)有(you)(you)可能(neng)較慢,準(zhun)確性(xing)也(ye)可能(neng)變差。
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