System and method of generating equation-level diagnostic error messages for use in circuit simulation

摘要

A mechanism for providing equation-level diagnostic error messages for system models undergoing circuit simulations is discussed. The components in a model of a system being simulated are converted into multiple numerical equations where each equation corresponds to a component in the system being simulated or a topology equation for the system model. Each numerical equation is numerically analyzed in order to identify illegal configurations in the system. Upon detection of an error, an error message listing the components associated with the illegal configuration is generated for the user.

主权项

1. A method comprising:
analyzing a matrix, where:
the matrix corresponds to a plurality of numerical equations, andthe analyzing is performed by a processor; the analyzing comprises:
factoring the matrix into a full column rank matrix and at least one staircase upper triangular matrix; identifying an illegal configuration in a system model, where the identifying:
is based on the analyzing, andis performed by the processor; selecting a numerical equation from the plurality of numerical equations; identifying the illegal configuration by operating on the matrix, the identifying comprising:
determining that the selected numerical equation is linearly dependent on another equation of the plurality of numerical equations; andindicating that the system model contains the illegal configuration, the indicating based on the determining.