Logic-Dynamic Approach to Fault Diagnosis in Mechatronic Systems

International Journal of Advanced Robotic Systems

关键词: mechatronic systems;    nonlinear models;    fault detection and isolation;    observers;    robustness;   

DOI  :  10.5772/5726

学科分类：自动化工程

来源: InTech

【 摘 要 】

This paper presents a problem of fault detection and isolation (FDI) in mechatronic systems described by nonlinear dynamic models with such types of no differentiable nonlinearities as saturation, Coulomb friction, backlash, and hysteresis. To solve this problem, so-called logic-dynamic approach is suggested. This approach consists of three main steps: replacing the initial nonlinear system by certain linear logic-dynamic system, obtaining the bank of linear logic-dynamic observers, and transforming these observes into the nonlinear ones. Logic-dynamic approach allows one to use the linear FDI methods for diagnosis in nonlinear mechatronic systems.

【 授权许可】

CC BY