Comparing the Different Arithmetic Methods for the Offset Drift Compensation of Pressure Sensor
Guoyu Li · Journal of Transcluction Technology · 2004
The offset thermal drift of pressure sensor is influenced by piezoresistor mismatch and its leakage current in practical applications. They affect the measurement accuracy of pressure sensor. Since the pressure sensors are applied in a numerous fields and the measured data should be quite accurate, the offset thermal drift of pressure sensor is a serious problem that must be solved. Computer science has developed more quickly at present, so we can compensate it by software on SCM. We use varied kind of arithmetic methods that are programmed on computer. The calculation results show that the normalized polynomial-match for non-linear function and neural network can match experimental data more accurate than other arithmetic methods for compensating the offset thermal drift of pressure sensor.