STATE SPACE SYSTEM SIMULATOR UTILIZING BI-QUADRATIC BLOCKS TO SIMULATE LIGHTLY DAMPED RESONANCES

摘要

A method for operating a data processing system to simulate a physical system is disclosed. The physical system receives a time- varying input and generates a time-varying output. A model of the physical system is provided. The model depends on values of the time-varying input and an internal state in the physical system, the internal state is not directly measurable. The model includes a bi-quad component that models a resonance or anti-resonance of the physical system. For each of a plurality of time points, a current input value for the time-varying input is received. An internal state vector having a value of the internal state at a current time point as one component thereof is computed and computing an estimate of a system output at that time point, the system output being directly measurable. In one aspect of the invention, the internal state vector depends on a previous value of the internal state vector and the current input value.