Notice of Violation of IEEE Publication Principles: Reliable Output Feedback Control of Discrete-Time Fuzzy Affine Systems With Actuator Faults

Wei, Yanling; Qiu, Jianbin; Karimi, Hamid Reza

doi:10.1109/tcsi.2016.2605685

Cited by 307 publications

(118 citation statements)

References 38 publications

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“…20 High-order sliding mode (HOSM) technique moves the discontinuous action to the higher derivatives of the system, and compared with other chattering elimination methods, it can not only eliminate the chattering but also increase the accuracy such as observers with finite-time convergence and high accuracy developed in Van et al 21 and Zou 22 to estimate system states. Meanwhile, an alternative solution to eliminate the couplings in the developed 6-DOF model is output-feedback control design, which has been widely applied such as Wei et al 23,24 Inspired by these facts, this article attempts to design a control scheme on the LF system robust against external disturbances, model uncertainties, and actuator saturation, such that the follower states can converge to the predefined states with respect to the leader in finite time suitable for missions with high accuracy and quick maneuver tracking requirements. The main contributions of this article are as follows:…”

Section: Introductionmentioning

confidence: 99%

Extended state observer–based finite-time controller design for coupled spacecraft formation with actuator saturation

Zhang

Sun

2017

Advances in Mechanical Engineering

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This article investigates the consensus tracking control problem of the leader-follower spacecraft formation system in the presence of model uncertainties, external disturbances, and actuator saturation, where the relative motion of the leader and the follower need to track a desired time-varying trajectory given in advance. First, the six-degree-of-freedom relative-coupled translational and rotational dynamics models are derived using the exponential coordinates on the Lie group SE(3). Then, a fast terminal sliding mode control law is proposed to guarantee the tracking control objective come true in finite time robust against all the aforementioned drawbacks. As a stepping stone, an extended state observer is designed to estimate and compensate the total composed disturbances of the system, and it is proved that the estimate errors can converge to a really small neighborhood of the origin in finite time. Based on the observer information, a less-conservative modified controller is furthermore developed to eliminate the chattering caused by the signum function. The stability of the closed-loop system is shown by theoretical analysis. Finally, the validity of the proposed schemes is illustrated through numerical simulations.

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Section: Introductionmentioning

confidence: 99%

Extended state observer–based finite-time controller design for coupled spacecraft formation with actuator saturation

Zhang

Sun

2017

Advances in Mechanical Engineering

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“…Aspect I: Designing a robust multi-loop feedback controller 34,35 to reject the disturbances, noise, and uncertainties in the modeling of the multiple input and multiple output (MIMO) systems. For example, estimating the transmitting torque of the one-way clutch to determine the switching moment between the torque phase and the inertia phase in an even more precise way.…”

Section: Resultsmentioning

confidence: 99%

Multi-stage global trajectory optimization for the overlapping shift of a seamless two-speed transmission using Legendre pseudo-spectral method

Zhao

Liu

et al. 2017

Advances in Mechanical Engineering

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For a seamless two-speed transmission specially equipped in electric vehicles, the global trajectory optimization problem of the overlapping shift process with multiple stages and complex path/point constraints is investigated in this article. The overlapping shift principle and the dynamic models in each phase are also demonstrated in detail. The parameters to evaluate the shift quality are analyzed and then introduced into the objective function and constraints, respectively. The jerks in process and at the key moments have been distinguished and selected as the path and point constraints, respectively. Moreover, considering the joint characteristics of the torque phase and the inertia phase, the trajectory optimization problems in the above two phases are summarized as a multi-stage global trajectory optimization problem. Then, Legendre pseudo-spectral method is used to transfer the multi-stage global trajectory optimization problem into a nonlinear programming problem for numerical solutions. Finally, the effectiveness and feasibility of the multi-stage global trajectory optimization method have been verified through the comparison of the optimal shift trajectories under different conditions with that obtained by the piecewise trajectory optimization method.

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“…In [55], authors presented a novel system-augmentation method to the delay-dependent reliable piecewise-affine H∞ static output feedback (SOF) control for nonlinear systems with time-varying delay and sensor faults in the piecewise-Markovian-Lyapunov-functional-based framework. In [56], they also showed the robust and reliable H∞ SOF control for nonlinear systems with actuator faults in a descriptor system framework. Through simulation studies, the effectiveness of the proposed method is confirmed.…”

Section: Acquisition Of the Output Of The Fuzzy System By Defuzzificamentioning

confidence: 99%

Fuzzy-System-Based Detection of Pupil Center and Corneal Specular Reflection for a Driver-Gaze Tracking System Based on the Symmetrical Characteristics of Face and Facial Feature Points

Lee¹,

Yoon²,

Hong³

et al. 2017

Symmetry

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Abstract:Recently, many studies have actively dealt with the issue of driver-gaze tracking for monitoring the forward gaze and physical condition. Driver-gaze tracking is an effective method of measuring a driver's inattention that is one of the major causes of traffic accidents. Among many gaze-tracking methods, the corneal specular reflection (SR)-based method becomes ineffective, unlike in an indoor environment, when a driver's head rotates, which makes SR disappear from input images or disperses SR in the lachrymal gland or eyelid, thereby increasing the gaze-tracking error. Besides, since a driver's eyes in a vehicle environment need to be captured in a wide range covering his head rotation, the eye region is captured in a relatively low resolution compared to face-only images taken in indoor environments at the same resolution, making pupil and corneal SR difficult to detect accurately. To solve these problems, we propose a fuzzy-system-based method for detecting a driver's pupil and corneal SR for gaze tracking in a vehicle environment. Unlike existing studies detecting pupil and corneal SR in both eyes, the method proposed in this research uses the results of a fuzzy system based on two features considering the symmetrical characteristics of face and facial feature points to determine the status of a driver's head rotation. Based on the output of the fuzzy system, the proposed method excludes the eye region, which is very likely to have a high error rate of detection due to excessive head rotation, from the detection process of the pupil and corneal SR. Accordingly, the proposed method detects pupil and corneal SR only in the eye region that apparently has a low detection error rate, thereby achieving accurate detection. We use 20,654 images capturing 15 subjects (including subjects wearing glasses), who gaze at pre-set fifteen regions in a vehicle, to measure the detection accuracy of the pupil and corneal SR for each region and the gaze tracking accuracy. Our experimental results show that the proposed method performs better than existing methods.

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Notice of Violation of IEEE Publication Principles: Reliable Output Feedback Control of Discrete-Time Fuzzy Affine Systems With Actuator Faults

Cited by 307 publications

References 38 publications

Extended state observer–based finite-time controller design for coupled spacecraft formation with actuator saturation

Extended state observer–based finite-time controller design for coupled spacecraft formation with actuator saturation

Multi-stage global trajectory optimization for the overlapping shift of a seamless two-speed transmission using Legendre pseudo-spectral method

Fuzzy-System-Based Detection of Pupil Center and Corneal Specular Reflection for a Driver-Gaze Tracking System Based on the Symmetrical Characteristics of Face and Facial Feature Points

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