Modeling and fault tolerant control of an electro-hydraulic actuator

Nahian, Syed Abu; Dinh, Truong Quang; Chowdhury, Puja; Das, Debdatta; Ahn, Kyoung Kwan

doi:10.1007/s12541-016-0153-2

Cited by 32 publications

(41 citation statements)

References 36 publications

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“…However, most research focuses on the FTC problems for single-channel hydraulic actuator (SHA). The existing design methods include quantitative feedback theory (QFT) [6,7], adaptive robust control (ARC) [8][9][10], and intelligent control [11]. Among them, [7][8][9][10][11] belong to the AFTC method, which needs to employ real-time fault detection and diagnosis (FDD) module to provide up to date information about the true status of a system [12].…”

Section: Mathematical Problems In Engineeringmentioning

confidence: 99%

“…The existing design methods include quantitative feedback theory (QFT) [6,7], adaptive robust control (ARC) [8][9][10], and intelligent control [11]. Among them, [7][8][9][10][11] belong to the AFTC method, which needs to employ real-time fault detection and diagnosis (FDD) module to provide up to date information about the true status of a system [12]. The FDD methods in [7][8][9][10][11] include neural network [7], adaptive robust observer [8], parameter adaptive methodology [9], and stochastic filtering theory [10,11].…”

Section: Mathematical Problems In Engineeringmentioning

confidence: 99%

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Adaptive Robust Fault-Tolerant Synchronization Control for a Dual Redundant Hydraulic Actuation System with Common-Mode Fault

Yang

Cao

et al. 2018

Mathematical Problems in Engineering

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This paper investigates the fault-tolerant synchronization control (FTSC) problem for a dual redundant hydraulic actuation system (DRHAS), which works on active/active (A/A) mode and suffers from a kind of common-mode fault (CMF), i.e., internal leakage faults occurring in both hydraulic actuator (HA) channels simultaneously due to a common cause. Firstly, in order to follow the position command and synchronize the force outputs of the two channels, a desired trajectory generator derived from the dynamics of the control surface is employed. Then, considering model uncertainties and nonlinear dynamics of the plant, an FTSC controller is designed based on adaptive robust control (ARC) theory and backstepping technology. The controller parameters, closely related to the fault parameters, are updated online to make the controller adapt to the fault condition only when the system performance degradation exceeds a prescribed tolerable level. It has been verified that the proposed FTSC scheme can guarantee the bounded stability of output tracking error system under common-mode fault. Finally, simulation results under two scenarios demonstrate the effectiveness of the proposed FTSC scheme.

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Section: Mathematical Problems In Engineeringmentioning

confidence: 99%

Section: Mathematical Problems In Engineeringmentioning

confidence: 99%

Adaptive Robust Fault-Tolerant Synchronization Control for a Dual Redundant Hydraulic Actuation System with Common-Mode Fault

Yang

Cao

et al. 2018

Mathematical Problems in Engineering

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“…To address this issue, the fault-tolerant control (FTC) technique for EHAs was introduced. This technique handles the impacts of actuator faults (AFs) and sensor faults (SFs) [12][13][14][15][16][17][18], and sensor fault-tolerant control (SFTC) techniques are also used to solve the problems of SFs [19,20]. With the rapid development of mechatronics technology, increasingly intelligent and complex systems using the FTC technique have been applied to both industries and human life.…”

Section: Introductionmentioning

confidence: 99%

Sensor Fault-Tolerant Control Design for Mini Motion Package Electro-Hydraulic Actuator

Nguyen

2019

Processes

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With the rapid development of computer science and information and communication technology (ICT), increasingly intelligent, and complex systems have been applied to industries as well as human life. Fault-tolerant control (FTC) has, therefore, become one of the most important topics attracting attention from both engineers and researchers to maintain system performances when faults occur. The ultimate goal of this study was to develop a sensor fault-tolerant control (SFTC) to enhance the robust position tracking control of a class of electro-hydraulic actuators called mini motion packages (MMPs), which are widely used for applications requiring large force-displacement ratios. First, a mathematical model of the MMP system is presented, which is then applied in the position control process of the MMP system. Here, a well-known proportional, integrated and derivative (PID) control algorithm is employed to ensure the positional response to the reference position. Second, an unknown input observer (UIO) is designed to estimate the state vector and sensor faults using a linear matrix inequality (LMI) optimization algorithm. Then an SFTC is used to deal with sensor faults of the MMP system. The SFTC is formed of the fault detection and the fault compensation with the goal of determining the location, time of occurrence, and magnitude of the faults in the fault signal compensation process. Finally, numerical simulations were run to demonstrate the superior performance of the proposed approach compared to traditional tracking control.

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“…2) contains electric drive, hydraulic lines with outtake and intake fillers being set, hydraulic power cylinder. Electrohydraulic actuator is applied at different industries even more and more often cause of its power consumption efficiency which is higher than simple hydraulic one has [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Improving the accuracy of machining of non-rigid shaft

2018

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So far, due to much more strict events of operating parameters requirements, the reduction of pieces steel intensity allows to produce multiplying quantity of the highly precise Non-Rigid Pieces (NRP); most of them are supposed to be the shafts in amount. The creation of Automatic Control Systems (ACS) by mechanical operating also involves highly precise NRP production. In present paper there is Self-Centering Rest (SCR) operating hydrocylinder piston rod control system presented; it causes influence directly to the rest centering accuracy. The plant processing does not require hydrostation and pipeline; it possesses highly precise centering and it is able to function either in shaft support mode, or in active dampening one. There is the original scheme of double acting sealed hydrocylinder presented. There is the functional control scheme of hydraulic power cylinder presented. There are results of the non-rigid shaft axle research while turning presented. Thus, the beat reduction of the rigid shaft while turning in SCR system reaches 3...16 times in comparison.

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Modeling and fault tolerant control of an electro-hydraulic actuator

Cited by 32 publications

References 36 publications

Adaptive Robust Fault-Tolerant Synchronization Control for a Dual Redundant Hydraulic Actuation System with Common-Mode Fault

Adaptive Robust Fault-Tolerant Synchronization Control for a Dual Redundant Hydraulic Actuation System with Common-Mode Fault

Sensor Fault-Tolerant Control Design for Mini Motion Package Electro-Hydraulic Actuator

Improving the accuracy of machining of non-rigid shaft

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