Equipment system analysis method and system based on linear steady discrete system

The invention provides an equipment system analysis method and system based on a linear steady discrete system. The method comprises the following steps: step 1, establishing an equipment composition/communication relation/operation process/equipment performance integrated model of an equipment system represented by a linear steady discrete system state space equation G; and step 2, carrying out comprehensive analysis on the operation capability of the equipment system, including the changeable capability, the reaction capability, the task completion capability and the destroy-resistant capability of the equipment system, establishing an evaluation index model for calculating all the capabilities, and calculating evaluation index values of all the capabilities based on a state motion expression of a state-space equation G. By analyzing the operation capability of the equipment system, the problems existing in the current system can be found, a direction is pointed out for the subsequent optimization of the eq