实验流体力学Issue(5)：84-89,6.DOI:10.11729/syltlx20150016
自适应遗传 PID 算法在风洞风速控制中的应用
Application of PID based on adaptive genetic algorithms in wind velocity control system of wind tunnels
摘要
Abstract
In order to accomplish the wind speed control system for a FDxx wind tunnel,a PID parameter setting method based on adaptive online genetic algorithm was designed.In the case of the limited gas source for a wind tunnel test,the algorithm can quickly establish the flow field and ensure the stability time of the flow.First,joint coding is done with these parameters. With elitist strategy adopted in early genetic evolution stage,a non-linear selection method based on roulette selection is introduced in the last period.So optimum individuals are preserved and the population diversity is increased.The fixed value thus would not be exceeded in the dynamic adjustment process.The objective function is set up with the error absolutes and variation rate accompanied by penalty functions.When the fixed value is exceeded,the excess is taken as the optimal.This method has been applied in a field debugging of FDXX wind tunnel.The result shows that it is fast,effective and reliable to use online adaptive genetic algorithms to set the PID control parameters.关键词
风洞/风速控制/参数调整/PID 算法/遗传算法Key words
wind tunnel/wind velocity control/parameter setting/PID algorithm/genetic algo-rithm分类
信息技术与安全科学引用本文复制引用
尼文斌,董金刚,刘书伟,贺丽慧,付增良..自适应遗传 PID 算法在风洞风速控制中的应用[J].实验流体力学,2015,(5):84-89,6.基金项目
国家自然科学基金 （）
