【摘要】 甘蔗渣发酵制取乙醇过程中温度控制通常为数字PID控制，为了达到更高的控制要求，加入模糊控制规则，构成Fuzzy-PID控制器，通过Matlab仿真对这两种控制方法的性能指标进行对比，证明了Fuzzy-PID比普通PID控制系统的上升、调节时间短，稳态误差小，提高了发酵过程的动、静态性能指标。使用STEP 7-Micro/WIN软件进行PLC的温度控制程序编程，在同等条件下使用PID和Fuzzy-PID的实验对比，折线图直观对比出Fuzzy-PID的超调量比PID控制降低35%，调节时间缩短20%，有更良好的鲁棒性，之后经反复调试系统，可知在35 s左右系统可稳定设定温度，控制效果符合工艺设计要求。更多还原

【Abstract】 In order to achieve higher control requirements,fuzzy control rules are added to constitute Fuzzy-PID controller,and the performance indicators of these two control methods are compared through Matlab simulation,which proves that Fuzzy-PID is shorter than the rise and adjustment time of ordinary PID control system,and the steady-state error is small,which improves the dynamic and static performance indicators of the fermentation process. Using STEP 7-Micro/WIN software for PLC temperature control program programming,under the same conditions to use PID and Fuzzy-PID experimental comparison,the line chart intuitively compared Fuzzy-PID overshoot 35% lower than PID control,adjustment time shortened by 20% has better robustness,and then after repeated debugging of the system. In about 35 s,the system can stably set the temperature,and the control effect meets the process design requirements.更多还原