摘要
针对一般动态矩阵控制算法不能直接用于不稳定对象这一问题,提出一种改进的动态矩阵控制设计方法。该方法先设计由内环控制器构成的反馈环节来稳定对象,再对稳定后的对象进行动态矩阵控制设计。采用现代频域法中的传递函数互质分解法设计内环控制器,并对设计的内环控制器进行抗扰性能和鲁棒性能的H2优化,优化后的内环控制器可独立地调节系统的抗扰性,也能有效地改善系统的鲁棒性。通过Matlab仿真实验与现有方法进行比较,结果表明:本文方法能明显改善系统的鲁棒性和抗扰性。
Considering the fact that dynamic matrix control algorithm fails to be directly used for unstable objects,an improved dynamic matrix control was proposed,of which,the inner-loop controller constitutes a feedback loop to stabilize the objects and then designs a dynamic matrix control for it. Making use of coprime factorization method,the inner-loop controller was designed and optimized in H2 for a disturbance rejection and robustness. The results of Matlab simulation show that the optimized inner-loop controller can independently adjust disturbance rejection performance and obviously improve system's robustness.
出处
《化工自动化及仪表》
CAS
2014年第11期1229-1231,共3页
Control and Instruments in Chemical Industry
基金
四川省高校院所应用成果转化项目(12DXYB171JH-002)
关键词
动态矩阵控制
不稳定对象
互质分解法
dynamic matrix control,unstable objects,coprime factorization method
