微分先行的STM32光生物反应器温控设计

STM32 Temperature Control System of Photobioreactor Based on Differential Preceding Algorithm

微藻生物培养过程中对温度具有严格要求,提高微藻培养装置溢流喷射光生物反应器温度控制的动态性能,对于提高培养成活率、降低生产成本有着重要作用。该文提出了利用微分先行PID算法改进光生物反应器的温度控制效果,并在此基础上设计了基于STM32的微控制器方案。通过实验数据比较得出,微分先行控制方式大幅减少了调节时间和超调量,与传统PID控制相比具有更好的动态特性。同时,文中提出的硬件实现方案,具有性能高、成本低的优点,便于在中小型微藻养殖企业中推广实施。

In the process of microalgae cultivation,it has high requirement for temperature. It has great significance to improve the survival ratio and reduce the cost of production through improving the dynamic performance of overflowing jetting photobioreactor^s temperature control. In the paper, a plan of improving optical bioreactor temperature control effect is proposed which uses the differential preceding PID algorithm,and a microcontroller scheme based on STM32 is designed. The results of experiment data indicate that the differential preceding control method can reduce the settling time and overshoot,and the new PID controller has better dynamic characteristic than the traditional PID. Meanwhile, the microcontroller scheme has high rate of quantity and price,and it is useful for the small and medium microalgae culture enterprises.