CAJ | 학술논문

针对农业生产中变量施肥量很难精确控制的问题，提出了变参数自适应模糊PID与变参数PI控制相结合的方法。系统初期采用 P主导型PI控制，以提高系统快速性；系统中期采用自适应模糊 PID ，同时兼顾系统快速性和稳定性；系统末期采用I 主导型PI控制，充分体现系统的稳定性。实验结果表明：自适应模糊 PID 与变参数PI复合控制施肥系统的最大超调量不超过2．21％，响应时间为0．23 s。自适应模糊 PID 与变参数 PI 结合的方法优于传统的PID 控制，可为变量施肥精确控制提供一种有效的途径。
침대농업생산중변량시비량흔난정학공제적문제，제출료변삼수자괄응모호PID여변삼수PI공제상결합적방법。계통초기채용 P주도형PI공제，이제고계통쾌속성；계통중기채용자괄응모호 PID ，동시겸고계통쾌속성화은정성；계통말기채용I 주도형PI공제，충분체현계통적은정성。실험결과표명：자괄응모호 PID 여변삼수PI복합공제시비계통적최대초조량불초과2．21％，향응시간위0．23 s。자괄응모호 PID 여변삼수 PI 결합적방법우우전통적PID 공제，가위변량시비정학공제제공일충유효적도경。
According to the agricultural production of variable rate fertilization quantity was difficult to precisely control problems , which were hard to be controlled by adaptive fuzzy PID and PI control methods .System in the early was used PI control to improve the system speed .The medium-range system was used adaptive fuzzy PID control in order to adapt to the fast and stability .It was used PI control for stability at the end of system .Results showed that the maximum over-shoot of adaptive fuzzy PID and PI control was 2.21%, the response time was 0.23s.The adaptive fuzzy PID and PI control was better PID control.That provided an effective method for Variable Fertilization .