機(jī)械外文翻譯--分布式機(jī)床的設(shè)計-文庫吧資料
2025-05-22 00:03本頁面
【正文】 nt and related tasks aspects: ●to ensure the precise trajectory and speed control of the mobile organs of machinetool. ●to survey the correct execution of this positioning (tracking) process, to react on environment changes as well as to perform the specified operations or actions upon machinetool mechanics. such as tool switching, cooling, lubricating, etc. Fig. 1 Functional architecture Chronologically, this mission is also divided into two steps: control program planning and control program executiug. In the first step, there is no direct action on machinetool multitask nature: “data acquisition and preprocessing” step. While in the second step, the control is effectively executed. It is worth to note that in the second step, the parallelization is possible due to the mechanics, only the motions as well as the operations to be performed are specified. This is the “data acquisition and preprocessing” step. While in the second step, the control is effectively executed. It is worth to note that in the second step, the parallelization is possible due to the multitask nature. fieldbus To meet the realtime munication need in our distributed machinetool, FIP is adopted. In this section, we briefly explain the main technical properties of FIP. FIP (Factory Instrumentation Protocol) is an industrial work designed for the exchange of information between sensors, actuators and control devices such as PLCs, CNCs or robot controllers. The architecture of FIP follows the socalkd reduced OS1 model (Physical layer, Data link layer and Application layer). This architecture makes a clear distinction between realtime munication and conventional message munication. At Data Link layer, there are services associated to variable transfers on the one hand and conventional messaging services on the other hand. At Application layer, we distinguish the MPS (Manufacturing Periodic/aperiodic Specification) services which use variable transfers of Data Link layer from the MMS services which are supported by the messaging services of the Data Link layer. FlP supports two transmission media: shielded twisted pair and optical fiber. It allows for a wide variety of topologies. The maximum length of a segment is 500 m 。我們現(xiàn)在正致力于用來證明符合執(zhí)行實時限制的經(jīng)營架構(gòu)的仿真和性能分析的工作。 ● 統(tǒng)計信息由站（節(jié)點）與站之間產(chǎn)生。 為了驗證擬議的架構(gòu)是否與時間限制和網(wǎng)絡(luò)能力相適應(yīng)，預(yù)期流量的估計是必要的。 工藝層：執(zhí)行控制 它包含兩種運動：運動控制器和可編程控制器。 每個軸的插補(bǔ)算法是軟 件設(shè)計的困難之一，因為軸控制分布后，每個中間坐標(biāo)軸的計算是獨立的。 慣例層：確定某一任務(wù)的控制算法 它被映射到 2種其他微機(jī)上（節(jié)點 2和節(jié)點 3）。它包括以下層次： 分析層：控制任務(wù)的執(zhí)行選擇 它被映射到微機(jī)的提供用戶界面的節(jié)點上。 軟件架構(gòu)的執(zhí)行系統(tǒng)是基于概念的多層次分布式控制。 節(jié)點 4：一個帶有傳感器 /制動器作為輔助業(yè)務(wù)的可編程控制器（低溫 100）。 節(jié)點 ：兩個相同的節(jié)點。 節(jié)點 1：微機(jī)（ i80486 微處理器）。 如圖 3所示，我們的應(yīng)用目標(biāo)是要實現(xiàn)一個分布式的兩軸機(jī)床控制系統(tǒng)。 一句話，像分布式機(jī)床的操作，像數(shù)據(jù)廣播的 要求，時間和空間的一致性，定期傳輸不能滿足任何一般用途的網(wǎng)絡(luò)。為了確保相同的瞬時命令能同時被幾個接受器接受，穩(wěn)定的傳輸是非常必要的。為了使機(jī)床遵守給定的軌跡，軸的控制必須同步。第二種情況下， the Bus Arbiter 可根據(jù)現(xiàn)有的帶寬產(chǎn)生轉(zhuǎn)讓請求信號。在這兩種情況下，匯率發(fā)生情況如上圖（圖 2）。當(dāng)更新產(chǎn)生時，消費者和生產(chǎn)者便形成了。第三步：作為生產(chǎn)者的站必須響應(yīng)包含數(shù)據(jù)的幀。 廣播的 BA 標(biāo)識符 認(rèn)識的人 P和一些消費者 231。變量對于生產(chǎn)者和消費者而言，是被確定的一個獨特的識別標(biāo)志，一套制作和消費變量可以集結(jié)在一個站，但是這些識別標(biāo)志不涉及任何物理地址站。變量和信息之間的傳遞可采用定期配置或根據(jù)站的要求來轉(zhuǎn)讓，而在我們的應(yīng)用中， FIP只采用可變轉(zhuǎn)讓。 FIP介質(zhì)訪問控制是集中的。 FIP允許各種各樣的布局，最長
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