The EMM is suitable for the case that all F-type influentially uncontrollable subnets are normalized cascade Petri nets, and the advantage is that control patterns can be on-line computed within polynomial times.

• 特征标识法适用于所有凡型影响不可控子网为规范化序状Petri网这种场合，用该方法设计的控制器在线运算工作量是多项式可解的。