摘要
为了改善系统的响应性能或解决常规内模控制不能用于不稳定对象的问题,通常在常规内模控制结构中增设一个反馈环节,但这种改进型内模控制系统的性能分析尚缺乏系统的、令人满意的结果.为此,利用基于传递函数互质分解的频域理论,系统地分析了这种改进型内模控制系统的稳定性和稳态性能,得到了保证系统内稳定和鲁棒跟踪的一般性结论,并且无论控制对象稳定与否、系统连续或离散,该结论都适用.
In order to improve the dynamic performance of the internal model control system （IMC） or solve the problem that the conventional IMC cannot be applied to unstable plants, a feedback component is usually added in the conventional IMC structure. However, there is no systematic and satisfactory result for the performance analysis of this modified IMC system. A transfer-function-based factorization approach in the frequency domain is used to analyze the stability and steady-state performance of the modified IMC system. The general results are obtained which guarantee the internal stability and the robust tracking of the system. These results are effective whether the plant is stable or not and whether the system is continuous or discrete.
出处
《控制与决策》
EI
CSCD
北大核心
2007年第4期477-480,共4页
Control and Decision
