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)計要求,設(shè)計了分模面、毛邊槽,通過布爾運算,生成了預(yù)鍛模、終鍛模、切邊模實體和卸料板。
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算的重建方法,用opengl技術(shù)在windowsvisualc + + 6 . 0環(huán)境進行三維特征重建,使重建的結(jié)果易于在后續(xù)研究和實驗中廣泛深入地應(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)庫進行讀寫操作,并采用實體間的布爾運算解決了復(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)圖形知識表達的優(yōu)點,但創(chuàng)新并擴展了表達方式,取消了對系統(tǒng)邏輯結(jié)構(gòu)的限制,引入了邏輯運算,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。
When calculate the correlation function of binary array pairs , using the boolean calculation instead of the decimal multiplication , using the method of count the number of 1 in binary integer to calculate the correlation function of binary array pairs , the speed of searching is obviously improved by these methods . by the algorithm introduced in this paper , the constant weight and normative perfect binary array pairs whose volume from 4 to 28 and quasi - perfect binary array pairs whose volume from 2 to 24 were searched and gi ved the new result 此外,采用二進制整數(shù)來表示陣列,通過對整數(shù)的邏輯運算來實現(xiàn)陣列偶的移位變換、完全采樣變換等運算;在計算二進陣列偶的相關(guān)函數(shù)時,用整數(shù)的邏輯運算代替十進制中的乘法運算,并用計算二進制整數(shù)中1的個數(shù)的方法來計算二進陣列偶的相關(guān)函數(shù),以上方法的采用明顯地提高了搜索速度。利用上述算法,對體積為4 28的等重規(guī)范型最佳二進陣列偶和體積為2 24的準(zhǔn)最佳二進陣列偶進行了搜索,并給出了新的結(jié)果。
Therefore , based on formers " research and recurring to the rather strong ability of holding mistakes possessed by rough set theory , this paper present a new attribute reduction arithmetic as well as an improved value reduction arithmetic based on the combination of rough set theory and duality boolean calculation , and use it to handle the reduction progress of the decision table including all kinds of fault cases which is established by considering the signals of protection relays and circuit breakers , then form the general mixed knowledge model and bring up an idea about automatic production of decision table 為此,本文在前人研究的基礎(chǔ)上嘗試借助粗糙集理論所具有的較強的容錯能力,提出了基于粗糙集理論與二值邏輯運算相結(jié)合的屬性約簡算法以及改進的值約簡算法,并將其應(yīng)用于由斷路器和保護為條件屬性,考慮各種故障情況所組成的診斷決策表的約簡過程中,形成了混合策略知識模型,同時提出了診斷決策表自生成的基本思想。