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Analysis and design of I/O based variable structure adaptive control

机译:基于I / O的变结构自适应控制分析与设计

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This paper presents an overview of a technique for the design of variable structure model reference adaptive control (VS-MRAC) systems, using only input-output data. The main ideas underlying the design and the analysis, as well as the main properties of the controller, are described having as point of departure a well known parameter adaptive MRAC scheme. Then, asymptotic properties of the VS-MRAC system are established taking into account the effect of the averaging filters necessary to implement some equivalent control signals. In particular, global exponential stability of the associated error system with respect to a small residual set is demonstrated. The effect of linear zones in the relay functions is assessed showing that they can alleviate the chattering phenomena. This is related with the fact that the VS-MRAC has a high-gain stability property. A procedure for noise sensitivity reduction is also proposed. Simulations illustrate the very satisfactory performance of the VS-MRAC in adverse operating conditions.
机译:本文介绍了仅使用输入-输出数据的可变结构模型参考自适应控制(VS-MRAC)系统设计技术的概述。描述了具有设计和分析基础的主要思想以及控制器的主要属性,其中以众所周知的参数自适应MRAC方案为出发点。然后,考虑到实现某些等效控制信号所需的平均滤波器的影响,建立了VS-MRAC系统的渐近性质。特别地,展示了相关误差系统相对于小的残差集的全局指数稳定性。评估了线性区域在继电器功能中的作用,表明它们可以缓解抖动现象。这与VS-MRAC具有高增益稳定性的事实有关。还提出了降低噪声灵敏度的程序。仿真表明,在不利的工作条件下,VS-MRAC的性能非常令人满意。

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