A DIGITAL-SIGNAL-PROCESSOR-BASED MEASUREMENT SYSTEM FOR ONLINE FAULT-DETECTION

This paper deals with the design, construction, and setting up of a me asurement apparatus, based on an architecture using two parallel digit al signal processors (DSP's), for on-line fault detection in electric and electronic devices, In the proposed architecture, the first DSP mo nitors a device output on-line in order to detect faults, whereas the second DSP estimates and updates the system-model parameters in real-t ime in order to track their eventnal drifts, The problems which arose when the proposed apparatus was applied to a single-phase inverter are discussed, and some of the experimental results obtained in fault and nonfault conditions are reported.