The invention provides a circuit
system fault-tolerant capability
simulation analysis method considering
cascade failure. The circuit
system fault-tolerant capability
simulation analysis method comprises the steps of S1, realizing
structure and function analysis; S2, constructing a
netlist file; S3, constructing a failure description file; S4, carrying out initial injection failure; S5, calling the SPICE for
simulation; S6, judging whether
cascade failure occurs or not, if the
cascade failure occurs, updating the circuit structure information and returning to the step S2, and if the cascade failure does not occur, considering that the cascade failure process is stopped; S7, collecting relevant data of a cascade failure propagation path; S8, carrying out redundancy
backup on the key components according to a cascade
failure analysis result in the step S7; and S9, updating the circuit structure, and recalculating the improvement degree of the fault-tolerant capability of the improved anddesigned circuit.
Simulation calculation analysis is carried out based on SPICE
simulation software, cascade failure propagation behaviors of the circuit
system can be analyzed from the perspective of the system, fault-tolerant design of the circuit system is guided, and method support is provided for circuit internal structure optimization and reconstruction.