The main purpose of this article is to study the sensor fault isolation for DC-DC converters, taking the single-ended primary industry converter as an example. To achieve the purpose of the research, we model the DC-DC converters as switched affine systems and design a bank of sliding mode observers for each corresponding sensor fault. By comparing the threshold with the residual estimation function produced by each sliding model observers, we can diagnose which sensor faults are occurring. Finally, three sensor faults are given as simulation examples to verify the feasibility of the proposed scheme.

中文翻译：

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通过开关仿射系统对 DC-DC 转换器进行传感器故障隔离

本文的主要目的是研究DC-DC转换器的传感器故障隔离，以单端初级工业转换器为例。为了达到研究的目的，我们将 DC-DC 转换器建模为开关仿射系统，并为每个相应的传感器故障设计一组滑模观测器。通过将阈值与每个滑动模型观测器产生的残差估计函数进行比较，我们可以诊断发生了哪些传感器故障。最后，给出了三个传感器故障作为仿真实例，以验证所提出方案的可行性。