化工学报Issue(2)：168-175,8.DOI:10.11949/j.issn.0438-1157.20140923
化工过程非稳态开工的缓冲升温修正切换控制
Modified switch control with buffer heating stage in chemical process startup
摘要
Abstract
Chemical process startup is mostly a heating process, to satisfy the requirements of speed and stability, some researchers proposed Bang-Bang control combined with other control method for controlling the heating process, but due to strict requirements of Bang-Bang control on switching time and switching point, its practical application is not satisfactory. So based on Bang-Bang control, a buffer heating stage was added. Then the temperature control process could be divided into four parts:full width, zero brake, buffer heating and PID control. The rate of change of temperature was used as switching variable between buffer heating and PID control. In addition, modified switch control was converted to nonlinear programming problems, and switching points of the first three parts were optimized. Simulation comparison revealed that the control method not only avoided the problem caused by inproper selection of switching times and switching points, but overshoot was small and the process could be stabilized quickly.关键词
过程控制/开工控制/修正切换控制/非线性规划Key words
process control/process startup control/modified switch control/nonlinear programming分类
信息技术与安全科学引用本文复制引用
罗雄麟,左瑞香,冯爱祥,许锋..化工过程非稳态开工的缓冲升温修正切换控制[J].化工学报,2015,(2):168-175,8.基金项目
国家自然科学基金项目（21006127）。 （）
