下层受控对象的状态演化导致事件的发生，并由上层的离散事件系统控制器做出监督决策，发出相应的控制命令。

The state evolution of low-level controlled plant conduces to event occurrence, whenever high-level discrete event system controller issues corresponding control commands and makes decision.

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该文针对这种情况，提出一种基于离散对象模型的数字内模控制(DIMC)算法。

For the fact given above, a digital internal model control (DIMC) algorithm based on discrete model is developed.

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为了准确描述离散事件控制系统对象之间的逻辑关系和编写控制程序，提出了一种基于规则的语言——逻辑规则描述语言(LRDL)。

In order to exactly describe logic relations among objects of discrete event control systems and write programs, a rule-based language, logic rule Description language (LRDL) is put forward.

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