Interactive Diagnostic Modeling Evaluator

About this technology

Overview

NASA Ames has developed an interactive diagnostic modeling evaluator (i-DME) tool to aid in modeling for noise and lag in the data and debugging of system models when fault detection, isolation, and recovery results are incorrect. i-DME is designed to dramatically speed up the modeling debugging process. Often what hinders human-led model developments are, 1) the sheer size of playback files, 2) the modeling for noise and lag in the data, and, 3) debugging the fault/test relationships in the model. To alleviate these problems, i-DME can automatically playback very large data sets to find time points of interest where user-set performance criteria for detection and isolation are violated. i-DME modifies the diagnostic model through its abstract representation, diagnostic matrix (D-matrix). The types of modifications are procedures ranging from modifying 0s and 1s in the D-matrix adding/removing the rows/columns, or modifying test/wrapper logic used to determine test results. This software has the capacity to be applied to any complex system for navigation or generation of large amounts of complex data to identify, prioritize, and resolve errors in a self-correcting manner.