约束模糊离散事件系统的监督控制

Supervisory control of constrained fuzzy discrete event system

针对传统模糊自动机无法描述一类约束模糊离散事件系统的问题,通过定义有效模糊状态向量和评价函数,给出了一种新的约束模糊自动机模型。围绕事件反馈类型的监督控制,从语言学角度将表示系统行为的事件序列定义为模糊语言,并分析了它的可控性,得到了它的运算性质。在此基础上,给出了该类系统监督控制的实现方法和步骤。借助新能源汽车锂离子电池均衡管理实例对方法进行了验证。结果表明,系统的运行过程较好地实现了预定的控制目标。

Aiming at the problem that the traditional fuzzy automata can＇ t describe a class of constrained fuzzy discrete event system,a new constrained fuzzy automata model by defining a valid fuzzy status vector and an evaluation function is presented in this paper.Around the event feedback of supervise control,this paper defines the sequence of events which shows the behavior of the system as a fuzzy language from the linguistic perspective,analyzes its controllability,and some operational properties are obtained.Based on them,this paper also presents a method and steps for the realization of supervisory control of such system,and verifies the method by an example of the equalization management for lithium-ion batteries of new energy vehicles.The results show that the system＇s running achieves the predetermined control target well.