摘要
针对滑模控制中传统趋近律收敛速度慢、抖振严重的问题,提出了一种特殊幂次函数和幂指数趋近律组合的新型趋近律,与传统的指数趋近律和等速趋近律相比较,该趋近律通过幂次项系数对趋近过程的不同的阶段进行有效调节,提高了运动过程的运动品质,且有效地削弱了抖振,证明了滑模控制的存在性和可达性。将所设计的趋近律应用在航空发动机控制系统中,结果表明,所设计的控制器取得了良好的控制效果,提高了收敛速度,削弱了抖振。
In order to solve the problem of slow convergence speed and serious chattering of the traditional approaching law in sliding mode control,a kind of asymptotic law of special power function and power exponential approaching law is proposed,which is compared with the traditional exponential reaching law and the fast approaching law,which regulates the different stages of the tightening process by power factor coefficients.In order to improve the motion quality and effectively weaken the chattering,the existence and accessibility of sliding mode control are proved theoretically.By applying the proposed approach law to Aeroengine control system,the results show that the designed controller has achieved good control effect,and the asymptotic law has improved the convergence speed and weakened the chattering.
作者
朱闪闪
谢中敏
曹永华
ZHU Shan-shan;XIE Zhong-min;CAO Yong-hua(Jiangsu Aviation Vocational and Technical College,School of Aviation Engineering,Zhenjiang Jiangsu 212134,China)
出处
《装备制造技术》
2021年第6期53-56,70,共5页
Equipment Manufacturing Technology
基金
2021年度院级课题资助项目(JATC21010113)
关键词
航空发动机
滑模变结构控制
趋近律
收敛速度
抖振
aero-engine
sliding mode variable structure control
approaching law
convergent speed
chattering
