Soft Sensor for Ammonia Concentration at the Ammonia Converter Outlet Based on an Improved Group Search Optimization and BP Neural Network<sup>*</sup>

阎兴頔, 杨文, 马贺贺, 侍洪波

Soft Sensor for Ammonia Concentration at the Ammonia Converter Outlet Based on an Improved Group Search Optimization and BP Neural Network^*

YAN Xingdi, YANG Wen, MA Hehe, SHI Hongbo

Chinese Journal of Chemical Engineering . 2012, (6): 1184 -1190 .