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arXiv 2204.09615math.OCcs.SYeess.SY
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基于动态状态反馈控制器的线性输入时滞系统耗散镇定:一种基于optimization的方法

Dissipative stabilization of linear input delay systems via dynamical state feedback controllers: an optimization based approach

Qian Feng, Bo Wei

摘要:

本文提出了一种有效的方法来解决线性输入时滞系统在耗散约束下的镇定问题,同时用一种新结构的控制器来补偿输入时滞的影响。该方法的灵感来自最近的发展,在数学处理的分布延迟和预测控制器,这是至关重要的解决方案的推导。一个重要的概念创新是使用一个参数化的动态状态反馈控制器(DSFC),控制器的维数等于控制输入的维数。通过Krasovskii泛函方法得到了耗散DSFC存在的一个充分条件,其中该条件包含一个双线性矩阵不等式.为了解决BMI,我们应用内凸近似算法,该算法可以基于预测控制器增益的显式构造来初始化。建议DSFC可以被认为是经典的预测控制器的扩展,从而能够补偿所有的逐点输入延迟的影响,同时满足耗散约束。最后给出了一个数值例子来说明所提方法的有效性。

英文摘要:

In this note, we present an effective solution to the stabilization of linear input delay systems subject to dissipative constraints while all the effect of input delay is compensated by a controller with novel structure. The method is inspired by the recent development in the mathematical treatment of distributed delays and predictor controllers, which are critical for the derivation of the solution. An important conceptual innovation is the use of a parameterized dynamical state feedback controller (DSFC), where the dimension of the controller equals the dimension of the control input. A sufficient condition for the existence of a dissipative DSFC is obtained via the Krasovskii functional approach, where the condition includes a bilinear matrix inequality (BMI). To solve the BMI, we apply an inner convex approximation algorithm which can be initialized based on an explicit construction of a predictor controller gain. The proposed DSFC can be considered as an extension of the classical predictor controller, thereby capable of compensating all the effects of the pointwise input delay while satisfying dissipative constraints. A numerical example is given to illustrate the effectiveness of our proposed methodology.

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