This paper investigates the problem of output-feedback control in the presence of measurement noise sensitivity for a class of switched nonlinear systems with unknown control coefficients under synchronous vs asynchronous switching. A constructive output-feedback control technique is provided by exploiting the dual-domination method and the average dwell time (ADT) method, which permits removal of a common restriction for output-feedback control in which the measurement sensitivity in switched systems is always a known constant. Also, output-feedback controllers of subsystems with a switched linear observer are designed to guarantee asymptotic stability of the closed-loop system under a class of switching signals with ADT, which effectively handle the influence of different sensor sensitivities for different subsystems in both synchronous vs asynchronous switching. Finally, simulation examples, including a mass–spring–damper mechanical system as a practical example, are given to illustrate the effectiveness of the technique proposed.

本文研究了一类在同步与异步切换下具有未知控制系数的非线性切换系统在存在测量噪声灵敏度的情况下的输出反馈控制问题。通过利用双重控制方法和平均停留时间（ADT）方法，提供了一种建设性的输出反馈控制技术，该技术可消除对输出反馈控制的共同限制，在该限制中，开关系统中的测量灵敏度始终是已知的不变。此外，带有开关线性观测器的子系统的输出反馈控制器的设计旨在保证在带有ADT的一类开关信号下，闭环系统的渐近稳定性，在同步和异步切换中有效地处理了不同传感器灵敏度对不同子系统的影响。最后，给出了仿真示例，包括质量－弹簧－阻尼器机械系统的实际示例，以说明所提出技术的有效性。