Further results on "Reduced order disturbance observer for discrete-time linear systems"
Further results on "Reduced order disturbance observer for discrete-time linear systems"
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DOI：
10.1016/j.automatica.2018.04.032
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发表时间：
2018-07
期刊：
影响因子：
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通讯作者：
Jinya Su;Wen‐Hua Chen
中科院分区：
文献类型：
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作者：
Jinya Su;Wen‐Hua Chen
降阶扰动观测器（DOB）已在Kim等人中提出。（2010）以及Kim和Rew（2013）分别针对连续时间和离散时间线性系统。有前途的算法的存在条件已经建立，但不是直接检查。这项工作进一步提高了降阶DOB设计，制定它作为一个功能观测器的设计问题。通过对状态泛函矩阵的精心设计，得到了一个具有易于检验的充分必要条件和易于调整的收敛速度的一般DOB。Kim和Rew（2013）的降阶DOB和Chang（2006）的全阶DOB都是这种新DOB的特例。
Reduced order Disturbance OBservers (DOB) have been proposed in Kim et al. (2010) and Kim and Rew (2013) for continuous-time and discrete-time linear systems, respectively. The existence condition of the promising algorithm has been established but is not straightforward to check. This work further improves the reduced order DOB design by formulating it as a functional observer design problem. By carefully designing the state functional matrix, a generic DOB is resulted with an easily-checked necessary and sufficient existence condition and an easily-adjusted convergence rate. It is also shown that both the reduced order DOB in Kim and Rew (2013) and the full order DOB in Chang (2006) are special cases of this new DOB.