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实现了集中化的系统的本质是除去了空间性。就是说不存在信息处理(或控制)中心与各终端的空间因素。这种空间因素只在通讯阶段前起作用,而通讯过程的目的就在于消除这一因素。例如对于东京的某个中心而言,在大阪的两个终端之间的关系,与分别在京都和大阪的两个终端的情况是一样的。在典型的星形系统里,靠近的两个终端,互相完全隔离,各自平行地与中心联系。让我们研究一下 AGT(Antomated Guideway Transit)这个在专用线上导控无人驾驶机车的
The essence of a centralized system is to eliminate the space. In other words, there is no space factor between the information processing (or control) center and each terminal. This spatial factor works only before the communication phase, and the communication process aims to eliminate this factor. For example, for a center in Tokyo, the relationship between the two terminals in Osaka is the same as the two terminals in Kyoto and Osaka respectively. In a typical star system, close to the two terminals, completely isolated from each other, each center in parallel with the contact. Let’s consider the Antomated Guideway Transit (AGT), which guides the unmanned locomotive on a dedicated line