基于零极点配置理论的压力传感器动态特性补偿

针对爆炸冲击波压力传感器动态特性难以满足工程要求这一现实问题,运用基于白化滤波器的广义最小二乘法建立传感器的数学模型,并用零极点配置方法对传感器进行动态补偿。通过重复性试验得出:给附加极点配置合适的零点可以大大改善传感器的动态性能。最后通过补偿效果说明,与以往零极点补偿法只关注极点而忽略零点作用相比本补偿方法更具有理论和现实意义,且补偿效果令人满意。

The dynamic characteristics compensation of the pressure sensor based on the theory of configuring zero-poles

For the practical problem that the dynamic characteristics of blast pressure sensor is difficult to meet the engineering requirement, a mathematical model of sensor was established by using the generalized least squares method based on the whitening filter, then the sensor was compensated by using zero-pole assignment method. By repeated tests, a conclusion shows that configuring suitable zeros to additional poles can greatly improve the dynamic performance. Finally, the compensation effect proves that the method has a vital theoretical and practical significance compared with the method which poles were concerned only while zeros were ignored, and the performance of the sensor is satisfactory after compensation.