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| Compensation of Dynamic Characteristics and Evaluation of Dynamic Uncertainty for a Measurement System Modeled by a Second-order Linear Time Invariant Model |
| HU Hong-bo,SUN Qiao#br# |
| National Institute of Metrology, Beijing 100013, China |
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Abstract A novel method is proposed for the design of the system compensation filter. The compensation filter is directly designed according to the frequency response data obtained by dynamic calibration, which avoiding the process of system identification. The whole process is illustrated by the realistic simulation and proved that the method can improve the dynamic characteristics effectively and reduce dynamic error. Furthermore, the uncertainty of the whole measurement process including dynamic compensation and filter process is evaluated under frame of the GUM uncertainty, and finally the output of the compensated system and its uncertainty are obtained.
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2013, Vol. 34 
