玉米定向种子带恒张力卷绕系统自适应模糊PID控制  

Constant Tension Winding System of Corn Directional Belt Making Machine Based on Self-adaptive Fuzzy-PID Control

作　　者：赵学观[1] 徐丽明[1] 何绍林[1] 邢洁洁 

机构地区：[1]中国农业大学农业部土壤-机器-植物系统技术重点实验室,北京100083

出　　处：《农业机械学报》2015年第3期90-96,共7页Transactions of the Chinese Society for Agricultural Machinery

基　　金：高等学校博士学科点专项科研基金资助项目(20120008110045);中央高校基本科研业务费专项资金资助项目(2013YJ007)

摘　　要：在玉米定向种子带的卷绕过程中,种子带的张力控制影响到种子带的质量。为此依据玉米定向种子带的要求,建立恒张力卷绕系统的传递函数,利用模糊控制技术实现玉米种子带的恒张力卷绕控制,创建了模糊自适应PID控制器,利用Matlab对其进行仿真,得到了较为合理的模糊控制算法,并将模糊控制算法通过西门子S7-200型PLC为核心的硬件控制电路应用于实际的张力控制,并进行了实际的卷绕试验。试验结果表明:模糊PID控制器与传统PID控制器相比,具有更好的动态稳定性和跟踪性能,张力产生阶跃时,系统过渡时间约为2 s,超调量在1.2%内,能够较好地满足种子带的卷绕要求。In the processing and winding process of corn directional belt making, tension control determines the quality of corn directional belt. A corn seed directional belt making machine was developed and transfer functions of constant tension winding system were set up. The fuzzy-PID self- adaptive control technology was used to achieve constant tension winding in corn directional belt making and a fuzzy-PID self-adaptive controller was created. Finally, the software Matlab was used to simulate. As a result, reasonable fuzzy-PID self-adaptive control algorithm was obtained, and fuzzy-PID self- adaptive control algorithm was used in the actual tension control by using Siemens S7 -200 PLC core hardware control circuit, as well as the winding experiment was carried out. Test results showed that the fuzzy-PID self-adaptive had better dynamic stability and tracking performance compared to the conventional PID controller and the controller could meet the requirements of corn directional belt winding. When the tension generated step, system transition time was about 2 s and overshoot was in 1.2%

关 键 词：玉米 定向播种 恒张力系统 自适应模糊 PID 控制 

分 类 号：TP24[自动化与计算机技术—检测技术与自动化装置]