Sliding mode observer based incipient sensor fault detection with application to high-speed railway traction device

Abstract

This paper considers incipient sensor fault detection issue for a class of nonlinear systems with "observer unmatched" uncertainties. A particular fault detection sliding mode observer is designed for the augmented system formed by the original system and incipient sensor faults. The designed parameters are obtained using LMI and line filter techniques to guarantee that the generated residuals are robust to uncertainties and that sliding motion is not destroyed by faults. Then, three levels of novel adaptive thresholds are proposed based on the reduced order sliding mode dynamics, which effectively improve incipient sensor faults detectability. Case study of on the traction system in China Railway High-speed is presented to demonstrate the effectiveness of the proposed incipient senor faults detection schemes.

Interval sliding mode observer based incipient fault detection with application to a high-speed railway traction device

“…From [18], the nonlinear system with incipient sensor faults can be represented by an augmented system, which can be transformed tȯ…”

“…The matrices A 11 , A 12 , A 21 , A 22 , C 2 ∈ R p×p (non-singular), D 2 ∈ R p×q all can be obtained based on [6]. In addition, from [18], if the minimum phase condition is satisfied, the matrix A 11 is Hurwitz. It is assumed throughout this paper that C 2 is identity matrix, n 1 = 1, p ≥ q, and A 11 is a negative scalar.…”

No-Tension Sensor Closed-Loop Control Method with Adaptive PI Parameters for Two-Motor Winding System

“…In the field of multimotor control, sliding-mode variable structure control method is a very effective control algorithm. In [16,17], the basic principle of the SM method is introduced in detail, and some of the unique problems in the motor control and multimotor control are introduced. In [18], to filter out the measurement noises of velocities and estimate the load torque of motors, an augmented observer is proposed.…”

Reliable finite‐time H∞ control for singular Markovian jump system with actuator saturation via sliding‐mode approach

“…Recently, sliding‐mode control has been widely applied in practical engineering systems . Sliding‐mode control (also known as variable structure control) is an attractive approach for practical engineering systems because of its effectiveness and availability.…”