摘要
针对冶金带钢轧制过程中纠偏执行机构电液伺服系统蝶形区、内漏引起的位置跟踪速度慢与精度低的问题,结合分数阶控制、改进Oustaloup算子近似滤波、模糊自适应控制,同时加入非线性控制因子,提出了多参量自由度的基于改进 Oustaloup算子的模糊自适应分数阶线性与非线性两种纠偏控制算法。经仿真实验对比,验证了设计的控制算法比普通PID稳态精度提高了88.57%、时间缩短了53.33%,不仅能保证最佳轨迹跟踪,而且可以改善模型不确定性和瞬变干扰抑制的鲁棒性。
Aiming at the problem of slow tracking speed and low precision caused by butterfly region and internal leakage of electro-hydraulic servo system in the process of metallurgical strip rolling, combining fractional order control theory, improving Oustaloup operator approximation filtering, fuzzy adaptive control, adding a nonlinear control factor at the same time, a fuzzy adaptive fractional order linear and nonlinear correction algorithm based on improved Oustaloup operator for multi-parameter degrees of freedom is proposed. After comparison of simulation experiments, the accuracy of the control algorithm is improved by 88.57% and the time is shortened by 53.33%, which is better than ordinary PID. It can not only guarantee the optimal trajectory tracking, but also improve the robustness of model uncertainty and transient interference suppression.
作者
车海军
马鲁飞
杨景明
武炳林
Che Haijun;Ma Lufei;Yang Jingming;Wu Binglin(Key Lab of Industrial Computer Control Engineering of Hebei Province, Yanshan University, Qinhuangdao 066004;National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Qinhuangdao 066004)
出处
《高技术通讯》
EI
CAS
北大核心
2019年第6期594-601,共8页
Chinese High Technology Letters
基金
河北省高等学校创新团队领军人才培育计划(LJRC013)
河北省自然科学基金(F2016203249)资助项目
关键词
纠偏控制
电液伺服系统
位置跟踪
分数阶
模糊自适应
correction control
electrohydraulic servo system
position tracking
fractional order
fuzzy adaptive
