The Accuracy Losing Diagnosis about Pressure Sensor System

Based on the whole-system dynamic accuracy theory and the dynamic error decomposition and tracing theory,this paper developed a new theory of dynamic measuring-system accuracy losing diagnosis theory.The methods of neural networks(NN) were used to study the system's accuracy losing for the pressure sensor system and diagnose the precision losing of its inside main units and the precision losing model was built up.The results validate that these theory can be used to diagnose the accuracy losing of the special measuring system.Through mastering the law of the accuracy losing of the system,finding the max influencing cell of the system it can resume and improve system's precision by taking efficient measures.