基于数字滤波器的气压传感器动态特性补偿方法研究

The atmospheric environment of near space is complicated to detect, sounding rockets carrying radiosonde for situ detection are used generally. The rapid fall of radiosonde results in a rapid change in measured air pressure. Therefore, the dynamic performance of pressure sensor is required to be better. A dynamic compensation method of pressure sensors based on a digital filter is proposed. The dynamic test data of pressure sensor is obtained by calibration, and the digital filter is designed by using a swarm intelligence algorithm in reverse modeling to compensate for the pressure sensor. The simulation results show that this research method can effectively improve the dynamic characteristics of pressure sensor, expand the pass band of pressure sensor, significantly reduce the dynamic test error of pressure sensor. An effective optimization method for improving the precision of pressure detection in the near space is provide.