CAJ | 학술논문

针对液压厚度自动控制系统（ Automatic Gauge Control，简称AGC）存在时滞性、时变性的问题，以及传统PID控制器的PI参数无法在线实时修改的局限性，提出了结合模糊控制理论，设计构造模糊自适应PID控制器的解决方法。即确定输入和输出变量，定义各变量的隶属度函数，求解输入变量和输出变量的比例因子，建立系统的模糊规则表，利用重心法解模糊后，实现实时在线调整 PI参数的目的。通过MATLAB仿真实验，对系统的时域特性及频域特性进行分析，得到模糊自适应PID控制器比传统PID控制器能够更快速的达到稳定，系统无超调量，无稳态静差，抗干扰能力强，取得了较好的控制效果。
침대액압후도자동공제계통（ Automatic Gauge Control，간칭AGC）존재시체성、시변성적문제，이급전통PID공제기적PI삼수무법재선실시수개적국한성，제출료결합모호공제이론，설계구조모호자괄응PID공제기적해결방법。즉학정수입화수출변량，정의각변량적대속도함수，구해수입변량화수출변량적비례인자，건립계통적모호규칙표，이용중심법해모호후，실현실시재선조정 PI삼수적목적。통과MATLAB방진실험，대계통적시역특성급빈역특성진행분석，득도모호자괄응PID공제기비전통PID공제기능구경쾌속적체도은정，계통무초조량，무은태정차，항간우능력강，취득료교호적공제효과。
Aiming at time delay,time change problems of hydraulic Automatic Gauge Control( AGC)and the diffi-culty of PID controller parameters adjusting,the combination of PID controller and fuzzy control was put forward, and a fuzzy self-adjusting PID controller was built through the rules of fuzzy control. The two parameters of PID con-troller can be adjusted online. The input and output variables were defined firstly,then the membership functions of variables were defined. The proportional factor of input and output variables was calculated and the fuzzy rules table of the system was established. Finally,the PI parameters of PID controller can be corrected online with the output of fuzzy controller. By checking time domain characteristics and frequency domain by the results of MATLAB simula-tion,the result shows that the fuzzy self-adjusting PID controller has shorter response time,much little overshoot, higher steady state behavior and stronger anti-interference ability.