Non-server/client-type independent-distribution parallel processing control systems significantly reduce the communication load in the control system and make rapid response possible even in large-scale systems. Despite this, there has been little research and discussion with regard to the impact on the stability of the overall system from delays in the dynamic characteristics or output information of each unit and transmission delays in the broadcasting system in such a method, and with regard to an active stabilization method therefor. Establishing stability can be difficult even in simple broadcast-type systems in which the priority is not different for each unit. An independent-distribution system stabilization method resulting from the conditions for stability evaluation and stability limits and the necessary conditions for the "characteristic priority", i.e. the direct current gain, provided in the present invention, as well as from equipping each unit with a dynamic compensator, is effectively provided for the first time by the present invention.