中文摘要：

发酵测控系统是发酵过程参数智能检测与优化调控的基础,直接影响着发酵过程的控制性能。该文针对L-乳酸发酵过程的智能检测,提出了一种基于智能检测的发酵过程测控系统集成方法,给出了系统的体系结构及实现方法,集成了基于虚拟仪器技术的PXI总线发酵过程智能测控系统,给出了系统的软、硬件设计。该系统通过建立软测量模型,有效地实现了发酵过程不易测量参量的在线估计与控制,为发酵过程提供了一种新的测控系统。试验研究表明,将该系统应用到L-乳酸发酵过程中,通过在线估计葡萄糖液消耗量,实现了L-乳酸发酵过程补料优化控制,乳酸产量提高23%,提高了发酵产物得率。

英文摘要：

Measurement and control system of fermentation process is the basis of parameters measurement and optimal regulation in fermentation process,directly influencing the optimal control performance of the fermentation system.Considering the intelligent measurement of L-lactic acid fermentation process,an integration method of measurement and control system based on intelligent measurement for fermentation process was proposed.The system architecture and implementing method were presented.The intelligent measurement and control system using PXI bus based on virtual instrument technology for fermentation process was integrated,and its hardware and software design were given.By constructing soft-sensor model in this system,the unmeasurable variables of fermentation process can be effectively estimated and controlled on-line.It provides a new measurement and control system for fermentation process.The experiment results show that the glucose liquid consumption can be estimated on-line by using the system in the L-lactic acid fermentation process,and the real-time closed loop optimal fed-control can be realized,furthermore,the production of L-lactic acid increases by 23%,as compared with the traditional manual control.