【作者】 罗庚兴；

【Author】 LUO Gengxing (Guangdong SongShan Polytechnic College,Shaoguan 512126,Guangdong,China)

【机构】 广东松山职业技术学院；

【摘要】 将模糊控制器与PID控制器结合起来,选取合适的隶属度函数和模糊控制规则,分析输入变量的量化因子和输出变量的比例因子在模糊控制系统中对系统性能的影响,离线计算出模糊控制规则表,利用S7-300PLC设计一个液位模糊PID控制器。通过在单容水箱进行实际液位控制实验,并用WINCC对系统进行监控,实验结果表明,采用模糊PID控制的水箱液位,具有良好的动静态性能。更多还原

【Abstract】 S7-300 PLC is used to designed a level fuzzy controller by combining fuzzy controller with PID controller,selecting appropriate grade of membership functions and fuzzy control rules,analyzing the impact of quantization factors of input variables and scale factors of output variables to the performance in the fuzzy control system,and calculating the table of fuzzy control rules off-line.Actual level control experiment has been made on single-capacity water tanks with supervising the system by adopting WINCC,showing that the water tank temperature with the fuzzy adaptive PID control is able to offer good dynamic-static performance.更多还原