Cycloids are particular Petri nets for modelling processes of actions or events. They belong to the fundaments of Petri's general systems theory and have very different interpretations, ranging from Einstein's relativity theory and elementary information processing gates to the modelling of interacting sequential processes. The subclass of regular cycloids describes cooperating sequential processes. Such cycloids are extended to cover failure resilience.

翻译：循环网是一种特殊的Petri网，用于建模动作或事件的过程。它们属于Petri一般系统理论的基础，具有多种不同的解释，从爱因斯坦的相对论和基本信息处理门，到交互式顺序过程的建模。正则循环网这一子类描述了协作的顺序过程。此类循环网被扩展以涵盖故障恢复能力。