摘要
针对模糊控制器自适应能力有限、在某些情况下会出现极限环振荡的缺点,采用引入高精度的矩形域上二次样条曲面磨光插值算法的方法来改进其控制性能。借助Matlab的S函数进行仿真研究,结果表明常规模糊控制器虽然存在一定程度的量化误差,但这并不是产生极限环振荡的惟一原因,没有一种理想的模糊控制规则也是其原因所在。所以,在模糊控制中引入插值算法并不能从本质上完全消除模糊控制器对于某些被控对象所产生的极限环振荡现象,这种方法也有一定的局限性。
Aiming at the defect of fuzzy controller from the limited ability of selfadapting and under some circumstances fuzzy controller will cause the phenomenon of limit cycle oscillation. We use method of inducting quadratic spline surface polish interpolation algorithm on rectangle area to improve its control performance. By the means of S -function of Matlab, the simulation results indicate that quantization error existed in normal fuzzy controller is not the only reason of limit cycle oscillation, no ideal rules of fuzzy control also leads to oscillation. To some controlled objects,inducting interpolation algorithm can not eliminate limit cycle oscillation in nature, this method has its limitations.
出处
《现代电子技术》
2005年第12期14-16,共3页
Modern Electronics Technique
