Measurement System Identification And Improvement Of Dynamic Characteristics

The accelerometer and pressure sensor linear measurement systems are researched in thesis. With the theory:"the ways able to identify the difference equation model order and parameters simultaneously"and"the generalized least squares method of special whitening filter", the mathematical models of each system are established and dynamic characteristic parameters are worked out. The result shows that the regression effect of model established is satisfied. Then dynamic compensation digital filers are designed from that. Simulation result shows that the method could shorten the dynamic response time of measurement systems and widen their work bandwidth evidently.