Multimode ruling system based on time iteration and negative feedback mechanism

The invention discloses a multi-mode ruling system based on time iteration and a negative feedback mechanism. The multi-mode ruling system comprises a heterogeneous pool unit, a multi-mode ruling device and a negative feedback unit, wherein the heterogeneous pool unit comprises three or more heterogeneous SDN controllers; in each SDN control layer, the heterogeneous SDN controllers are used for processing input requests at the same time, and submit an output result set of each SDN controller in unit time to the multi-mode ruling device; the multi-mode ruling device performs consistency rulingon information distribution in a flow table of the output result set, and issues a ruling result to a switch; and after each judgment, the negative feedback mechanism adjusts the confidence of the corresponding heterogeneous SDN controller according to the ruling result, so that dynamic selection of the heterogeneous SDN controllers in the heterogeneous pool is realized, and the security defense capability of the system i