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PLCopen庫的應(yīng)用舉例
例1:印刷機(jī)的控制開發(fā)
對(duì)于印刷機(jī)械而言，其核心在于印刷套色，基于PLCopen的庫，我們可以通過圖中的功能塊RegMarkCapture001來進(jìn)行色標(biāo)的抓取，通過RegMarkCacl001進(jìn)行色標(biāo)偏差的計(jì)算和解耦算法，并通過Offset進(jìn)行相位偏移的控制輸出，這三個(gè)功能塊可以實(shí)現(xiàn)對(duì)印刷的套色計(jì)算和控制，結(jié)合速度控制模塊、扭矩控制實(shí)現(xiàn)對(duì)張力控制的計(jì)算。
除了應(yīng)用于凹版印刷機(jī)的套色控制，PLCopen在柔版、商業(yè)輪轉(zhuǎn)機(jī)等高性能卷筒紙印刷領(lǐng)域也得到了廣泛應(yīng)用，大大降低了開發(fā)周期。
例2：PLCopen庫在旋蓋控制中的應(yīng)用
在啤酒飲料灌裝系統(tǒng)中，如何實(shí)現(xiàn)更高效且高品質(zhì)的旋蓋控制，即可借助于PLCopen的庫：
對(duì)于旋蓋而言，角度控制MC_MoveAdditive可以提高速度，它可以確保旋蓋過程以極大的速度進(jìn)行，但是，卻不能保障每個(gè)旋蓋動(dòng)作的扭矩控制質(zhì)量，通過TorqueControl模塊，可以確保每個(gè)瓶蓋的相同力矩，確保旋蓋質(zhì)量的一致性，但是，TorqueControl卻會(huì)降低效率，因?yàn)椴荒苓^高的速度，否則會(huì)將瓶子損壞。
因此，通過MC_MoveAdditive和MC_BR_TorqueControl的混合使用可以確保高品質(zhì)同時(shí)高速的旋蓋控制。
例3：PLCopen Safety安全庫的應(yīng)用
仍然以啤酒飲料灌裝設(shè)備來看，對(duì)于高速運(yùn)轉(zhuǎn)的機(jī)器，必須考慮人身的安全以及設(shè)備的運(yùn)行安全，尤其是對(duì)連續(xù)生產(chǎn)的智能產(chǎn)線而言，其由吹瓶、清洗、灌裝、旋蓋、貼標(biāo)、膜包等一系列流程構(gòu)成，如果某個(gè)單元出現(xiàn)安全動(dòng)作，則整個(gè)生產(chǎn)線將因此停滯，帶來巨大的潛在浪費(fèi)，而SLS和STO可以解決這一問題，通過PLCopen Safety庫設(shè)計(jì)，我們可以實(shí)現(xiàn)兩個(gè)安全功能來確保生產(chǎn)效率與安全的平衡。
1. SLS降低產(chǎn)線速度，低速運(yùn)行的機(jī)器將會(huì)帶給人身風(fēng)險(xiǎn)的極大下降，通常在人員進(jìn)入機(jī)器的安全區(qū)則速度下降，如從10m/S的線速度下降到0.5m/S，則會(huì)大幅度降低傳動(dòng)設(shè)備對(duì)人身的潛在傷害，而同時(shí)產(chǎn)線并不會(huì)因此停止帶來再開機(jī)的成本以及在制品的浪費(fèi)。
2. STO，通過伺服驅(qū)動(dòng)的待機(jī)狀態(tài)，在人員進(jìn)入工作區(qū)，僅切斷力矩輸出，而不切斷電源，確保機(jī)器處于安全狀態(tài)，在人員離開后，重新啟動(dòng)工作，從當(dāng)前位置繼續(xù)。
此兩者均是基于生產(chǎn)效率與安全的平衡設(shè)計(jì)，可以通過PLCopen的Safety庫軟件設(shè)計(jì)來實(shí)現(xiàn)
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