Programmable logic controller ( plc ) is a kind of control system which bases on the processor and possesses comprehensive functions such as boolean calculation , control and network 可編程邏輯控制器是以處理器為中心,同時具有各類邏輯運(yùn)算、控制、網(wǎng)絡(luò)等綜合功能的控制系統(tǒng)。
According to the requirement of die designing , the die parting face and the gutter is designed . by boolean calculation , the blocker , finisher , cut - off die and stripper are generated 根據(jù)鍛模設(shè)計(jì)要求,設(shè)計(jì)了分模面、毛邊槽,通過布爾運(yùn)算,生成了預(yù)鍛模、終鍛模、切邊模實(shí)體和卸料板。
With boolean calculation of 3d feature solid , the solids are reconstructed by opengl technology in windows visual c + + 6 . 0 . it can be used farther in studies and tests later 利用三維特征形體布爾運(yùn)算的重建方法,用opengl技術(shù)在windowsvisualc + + 6 . 0環(huán)境進(jìn)行三維特征重建,使重建的結(jié)果易于在后續(xù)研究和實(shí)驗(yàn)中廣泛深入地應(yīng)用。
2 . the technology of objectarx programming has been lucubrated . the 2d and 3d graphics of shaft parts have been automatically drawn by objectarx visiting the autocad database directly and entitative boolean calculation 2 、深入研究了objectarx的編程技術(shù),通過對autocad數(shù)據(jù)庫進(jìn)行讀寫操作,并采用實(shí)體間的布爾運(yùn)算解決了復(fù)雜立體圖形和平面圖形的自動繪制。
The dynamic causality diagram developed from the belief network adopts its graphical expression of knowledge and then innovates and extends this expression approach , abolishes the limit to logical structure of system , and introduces boolean calculation . thus , the dynamic causality diagram overcomes the shortage of belief network , and possesses more greater advatage 由信度網(wǎng)發(fā)展起來的動態(tài)因果圖理論,借鑒了信度網(wǎng)圖形知識表達(dá)的優(yōu)點(diǎn),但創(chuàng)新并擴(kuò)展了表達(dá)方式,取消了對系統(tǒng)邏輯結(jié)構(gòu)的限制,引入了邏輯運(yùn)算,從而在很大程度上克服了信度網(wǎng)的不足,具有更大的優(yōu)勢。