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Robust fault tolerant optimal predictive control of hybrid actuators with time‐varying delay for industrial robot arm

Published: 06 January 2022 Publication History

Abstract

This paper presents a robust hybrid fault‐tolerant optimal predictive control (HFTPC), for an industrial robot arm under hybrid (electric and pneumatic) actuator faults and/or varying time‐delays. Based on the error dynamics, estimated states, and a predictive controller, a new state feedback control law is proposed and implemented for the reformulation of the optimal control problem of a nonlinear faulty hybrid actuator system based on predictive control via linear matrix inequalities (LMIs). First, a robust MPC scheme is performed in which the future control sequence is used to compensate the varying time‐delays. Then, a robust stable hybrid fault tolerant predivtive control is implemented to handle actuators faults to effect robust trajectory tracking. In fact, the stability of hybrid systems based on the proposed control scheme is a very sensitive criterion. Therefore, stability conditions are required for controlling the industrial arm under faulty hybrid (electric and pneumatic) actuator, based on the Lyapunov‐Krasovskii (L‐K) theory, less conservative stable conditions in terms of LMIs are given and used to ensure the asymptotically robust stability of closed‐loop constrained system that dependent delay‐range. To highlight the robustness and effectiveness of the proposed approach, a simulation study of an industrial robot arm example is proved, where the results showed the prompt and the accuracy of the proposed scheme.

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          Published In

          cover image Asian Journal of Control
          Asian Journal of Control  Volume 24, Issue 1
          January 2022
          498 pages
          ISSN:1561-8625
          EISSN:1934-6093
          DOI:10.1002/asjc.v24.1
          Issue’s Table of Contents

          Publisher

          John Wiley & Sons, Inc.

          United States

          Publication History

          Published: 06 January 2022

          Author Tags

          1. fault tolerant control
          2. hybrid actuators
          3. industrial robot arm
          4. model predictive control
          5. robust hybrid control

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          View all
          • (2024)Improved Harmony Search Genetic Algorithm for Optimizing Robot Arm ControllersProceedings of the International Conference on Image Processing, Machine Learning and Pattern Recognition10.1145/3700906.3700993(543-547)Online publication date: 13-Sep-2024
          • (2024)Robust integration of fault estimation and sliding mode fault‐tolerant control for interconnected systems against sensor faultAsian Journal of Control10.1002/asjc.322926:2(1017-1036)Online publication date: 17-Mar-2024
          • (2023)A multidimensional Bayesian architecture for real-time anomaly detection and recovery in mobile robot sensory systemsEngineering Applications of Artificial Intelligence10.1016/j.engappai.2023.106673125:COnline publication date: 1-Oct-2023
          • (2023)Rational entropy‐based fuzzy fault tolerant control for descriptor stochastic distribution networked control systems with packet dropoutAsian Journal of Control10.1002/asjc.306625:5(3805-3814)Online publication date: 4-Sep-2023
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          • (2023)Adaptive non‐singular fast terminal sliding mode based on prescribed performance for robot manipulatorsAsian Journal of Control10.1002/asjc.303325:4(3253-3268)Online publication date: 2-Jul-2023

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