A New Anti-Windup Compensator Based on Quantitative Feedback Theory for an Uncertain Linear System with Input Saturation

Jeyasenthil, R.; Choi, Seung‐Bok

doi:10.3390/app9152958

Cited by 4 publications

(6 citation statements)

References 18 publications

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“…Proof. The block diagram algebra for the normal system can be got from Figure 2 as (18) where E b is the error, R is the command signal, and Y is the system output. The majuscules denote the Laplace transform of their corresponding time functions.…”

Section: Anti-windup Mechanismsmentioning

confidence: 99%

“…Furthermore, the phenomenon of actuator saturation is important in the integrated reconfigurable strategy, because aircraft actuators are physically limited and faults will decrease their capability. Many works have focused on the combination of anti-windup and FTC [18][19][20][21][22][23][24]. The common design process is designing an original reconfigurable controller and modifying it using different anti-windup methods.…”

Section: Introductionmentioning

confidence: 99%

“…Second, two common actuator constraints (magnitude and rate) are considered to design the anti-windup FTC scheme using different techniques. In contrast with the proposed anti-windup reconfigurable controller, most of the existing anti-windup schemes can just address the magnitude saturation [18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

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Fault Diagnosis and Reconfigurable Control for Commercial Aircraft with Multiple Faults and Actuator Saturation

et al. 2021

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Active fault-tolerant control systems perform fault diagnosis and reconfigurable control. There is a bidirectional uncertainty between them, and an integrated scheme is proposed here to account for that. The system considers both actuator and sensor faults, as well as the external disturbance. The diagnostic module is designed using an unknown input observer, and the controller is constructed on the basis of an adaptive method. The integrated strategy is presented, and the stability of the overall system is analyzed. Moreover, different kinds of anti-windup techniques are utilized to modify the original controllers, because of the different controller structures. A simulation of the integrated anti-windup fault-tolerant control method is demonstrated using a numerical model of Boeing 747. The results show that it can guarantee the stability of the post-fault aircraft and increase the control performance for the overall faulty system.

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Section: Anti-windup Mechanismsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fault Diagnosis and Reconfigurable Control for Commercial Aircraft with Multiple Faults and Actuator Saturation

et al. 2021

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“…Designing a control system without taking into account the presence of saturation may lead to severe deterioration of the performance and even to instability of the closed-loop system. For this reason, this issue has been investigated by several control theorists, with recent results such as those reported in References [1][2][3][4][5][6][7]. Existing solutions may be divided into two categories-anti-windup compensation [8], where a compensator is added to an already designed controller in order to handle the saturation constraints and direct control design [9], in which the input constraints are considered at the controller design stage.…”

Section: Introductionmentioning

confidence: 99%

Design of State-Feedback Controllers for Linear Parameter Varying Systems Subject to Time-Varying Input Saturation

Ruiz¹,

Rotondo

Morcego³

2019

Applied Sciences

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All real-world systems are affected by the saturation phenomenon due to inherent physical limitations of actuators. These limitations should be taken into account in the controller’s design to prevent a possibly severe deterioration of the system’s performance, and may even lead to instability of the closed-loop system. Contrarily to most of the control strategies, which assume that the saturation limits are constant in time, this paper considers the problem of designing a state-feedback controller for a system affected by time-varying saturation limits with the objective to improve the performance. In order to tie variations of the saturation function to changes in the performance of the closed-loop system, the shifting paradigm is used, that is, some parameters scheduled by the time-varying saturations are introduced to schedule the performance criterion, which is considered to be the instantaneous guaranteed decay rate. The design conditions are obtained within the framework of linear parameter varying (LPV) systems using quadratic Lyapunov functions with constant Lyapunov matrices and they consist in a linear matrix inequality (LMI)-based feasibility problem, which can be solved efficiently using available solvers. Simulation results obtained using an illustrative example demonstrate the validity and the main characteristics of the proposed approach.

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“…On the other hand, facing the control input saturation in SRS tracking when the process encounters the model uncertainty, the authors of [21] proposed a new anti-windup compensator for an uncertain linear system, which is the three degrees of freedom (3-DOF) structure composed of the controller, prefilter, and anti-windup compensator. Specifically, it is necessary to consider the Horowitz-Sidi bounds of the 3-DOF at the same time in Nichols chart to obtain the anti-saturation compensator.…”

Section: Introductionmentioning

confidence: 99%

Proximate Time-Optimal Servomechanism Based on Transition Process for Electro-Optical Set-Point Tracking Servo System

Duan

Mao

et al. 2019

Applied Sciences

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Set-point tracking servo systems encounter the problem of the trade-off between the swiftness and smoothness in tracking task. To deal with this problem, the proximate time-optimal servomechanism based on transition process (PTSTP) is proposed in this paper. The PTSTP control scheme incorporates a transition process (TP) into the framework of proximate time-optimal servomechanism (PTOS) to eliminate the conservatism of the original PTOS without the controller changing. The target position signal amplitude and the ultimate ability of actuator are utilized to design the time-optimal TP to make the jumping target position signal turns to a smooth signal, which can significantly reduce system overshoot. Therefore, the system swiftness and smoothness performance are guaranteed by PTSTP. Then, the stability of the proposed method is analyzed theoretically. Finally, the experimental results show that the controlled system is able to track the target position signal with different amplitude fast and smoothly in an electro-optical set-point tracking servo system.

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A New Anti-Windup Compensator Based on Quantitative Feedback Theory for an Uncertain Linear System with Input Saturation

Cited by 4 publications

References 18 publications

Fault Diagnosis and Reconfigurable Control for Commercial Aircraft with Multiple Faults and Actuator Saturation

Fault Diagnosis and Reconfigurable Control for Commercial Aircraft with Multiple Faults and Actuator Saturation

Design of State-Feedback Controllers for Linear Parameter Varying Systems Subject to Time-Varying Input Saturation

Proximate Time-Optimal Servomechanism Based on Transition Process for Electro-Optical Set-Point Tracking Servo System

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