连续流动式粮食干燥机的仿人智能控制器  

Human simulated intelligent controller for continuous-flow grain dryer

作　　者：李国昉[1] 李栋[1] 齐玉斌[2] 毛志怀[1] 

机构地区：[1]中国农业大学工学院 [2]河北科技师范学院欧美学院,秦皇岛066004

出　　处：《农业工程学报》2006年第7期105-107,共3页Transactions of the Chinese Society of Agricultural Engineering

基　　金：教育部科学技术研究项目(105014)

摘　　要：基于经验模型的经典控制方法和现代控制方法不适合应用于多变量、大滞后和非线性粮食干燥过程。为提高粮食干燥的产品品质,根据连续流动式粮食干燥机的工况特点,研制了一种用于连续流动式干燥机的仿人智能控制器。该控制器包括运行控制级和参数校正级,可对出粮水分进行控制。应用M ATLAB对连续干燥机的仿真试验表明,该控制器在超调量、上升时间和调节时间等指标都比常规P ID控制有明显改善,对纯滞后时间的变化适应能力强,为干燥机控制系统的设计与实现提供了理论依据。Classical and modern control methods based on precise mathematic model are not suitable for grain drying process with multi-variables, long delay and non-linearity. In order to enhance the grain drying quality, a new human-simulated intelligent control system for continuous-flow dryers was introduced according to the characteristics of continuous-flow grain drying. The controller included the running level and the parameter adjustment level, and was able to control the output grain moisture content. Simulation tests with MATLAB on a dryer show that the controller performed well with fast response, less overshoot and strong adaptability for the change of pure delay time compared with classical PID. It can lay a foundation for the application of control system.

关 键 词：粮食干燥机 智能控制器 出粮水分 

分 类 号：S226.6[农业科学—农业机械化工程] TP273.4[农业科学—农业工程]