Year: 2016
Type: book-chapter
Abstract: This paper considers a problem of fault detection, isolation and identification of its values in mechatronic systems described by nonlinear dynamic models.To solve this problem logic-dynamic approach and special feedback by residual signal 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 detecting and isolating faults in nonlinear dynamic systems by using the linear methods for diagnosis in nonlinear mechatronic systems.Feedback of special form introduced in the observers after the detection and isolation of faults.It is allows to determine the value of faults even in nonlinear systems with incomplete observability.The results of mathematical simulation fully confirm the efficiency and high performance of the proposed method.
Language: English
Subfield: Control and Systems Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2506568484