Iterative learningcontrol (ILC) has proven successful in the industry for enhancing tracking performance of repetitive tasks. The high accuracy and fast convergence of ILC algorithms hinge on: 1) the knowledge of the...
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Iterative learningcontrol (ILC) has proven successful in the industry for enhancing tracking performance of repetitive tasks. The high accuracy and fast convergence of ILC algorithms hinge on: 1) the knowledge of the system model and 2) an effective learning algorithm. For general industrial systems with nonlinear dynamics, this raises technical challenges because acquiring a nonlinear dynamical model or several linearized models at different operating points may be difficult and costly. It is also non-trivial to determine the learning algorithm for the complex model obtained. To address these challenges, this article proposes a novel data-driven ILC algorithm for single-input-single-output nonlinear systems. Without explicit nonlinear models, our algorithm treats the nonlinear system as an unknown linear time-varying system linearized on a specified input-output (I/O) trajectory in each ILC iteration. A linearly parameterized time-varying adaptive filter is constructed in each ILC iteration so that, when cascading with the nonlinear plant, the I/O dynamics around the specified trajectory follow a linear time-invariant reference model. The ILC error trajectory is then filtered by the adaptive time-varying filter, which represents the inverse dynamics with a bandwidth specified by the reference model, to render fast convergence. The benefits of the proposed data-driven algorithm is demonstrated by comparing to a gradient and Hessian-based data-driven ILC algorithm on a prototypical two-degree-of-freedom nonlinear pendulum.
Panax notoginseng is one of economic crop with significant medicinal value in southwest China. However, traditional extensive fertilization and irrigation method usually damages the soil, making it difficult to achiev...
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In order to achieve the full consumption of renewable energy and the reduction of peak and valley loads in the active power system, a multi-objective optimal scheduling strategy for the active power system, i.e., the ...
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In the paper, we study the problem of distributed model-free adaptive iterative learningcontrol (DMFAILC) for multiagent systems (MAS) under deception attacks. Firstly, we introduce an improved dynamic linearization ...
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data-driven-based intelligent fault diagnosis has achieved significant success. However, the limited number of features and samples often hinders the accuracy of such diagnoses. On the one hand, addressing the issue o...
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data-driven-based intelligent fault diagnosis has achieved significant success. However, the limited number of features and samples often hinders the accuracy of such diagnoses. On the one hand, addressing the issue of low accuracy in intelligent fault diagnosis due to limited features, and the additional complexity of intelligent fault diagnosis algorithms makes people worry about the rationality and interpretability of the decisions made by the model, benefiting from the Taylor series expansion theorem, we propose an intelligent fault diagnosis method based on an autoencoder-multidimensional Taylor network (MTN). On the other hand, to address the problem of low accuracy of intelligent fault diagnosis due to small samples, we introduce federated learning. In federated learning, multiclient data is pooled to improve the accuracy of intelligent fault diagnosis. However, the interaction information between the client and the federation center is easily stolen by eavesdroppers. For this reason, to protect the security of the information interaction between the federated centers and the clients, we propose a hybrid additive and multiplicative coding strategy based on punishing eavesdroppers. Finally, we validate the new method based on the actual flexible rotor and the open-bearing dataset of Western Reserve University. The experimental results show that the intelligent fault detection model proposed in this article can improve the accuracy of fault detection, while the proposed information protection strategy can realize the effect of punishing eavesdroppers. The proposed method in this article is further compared with the latest research methods to verify the advancement of the proposed method.
This paper presents a new method of a faster and precise thermal control in space with an emphasis on the need of real-time prediction in dynamic environments. The total irradiation on sun sensors is computed by consi...
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ISBN:
(纸本)9798350367393;9798350367386
This paper presents a new method of a faster and precise thermal control in space with an emphasis on the need of real-time prediction in dynamic environments. The total irradiation on sun sensors is computed by considering different environmental factors as well as satellite dynamics within the proposed approach. A neural network-based model is trained on this data, which is then coupled with the control system of the satellite for quick thermal adjustment. Successful validation lays the foundation for utilizing simulation-based physics-informed thermal analysis in conjunction with machine learning to influence the control system in near real-time for satellite subsystems.
This paper explores the integration of Artificial Intelligence (AI) in process control and diagnostics in semiconductor manufacturing. It highlights current trends, including machine learning (ML) for data alignment a...
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ISBN:
(纸本)9798350383089;9798350371529
This paper explores the integration of Artificial Intelligence (AI) in process control and diagnostics in semiconductor manufacturing. It highlights current trends, including machine learning (ML) for data alignment and predictive maintenance, and anticipates future advancements in data sharing and standardization. This overview showcases AI's transformative impact on equipment optimization and industry collaboration, underlining its role in shaping efficient, proactive manufacturing processes.
The video game industry is a significant economic force, generating billions of dollars in revenue annually. This paper analyses the factors influencing consumer preferences for different types of video games, focusin...
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Dear Editor, This paper considers the disturbance/uncertainty estimation of first-order nonlinear system subject to fully unknown internal dynamic, external disturbance, and unknown control input *** with existing ext...
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Dear Editor, This paper considers the disturbance/uncertainty estimation of first-order nonlinear system subject to fully unknown internal dynamic, external disturbance, and unknown control input *** with existing extended state observer(ESO) where priori knowledge of model parameter such as nominal input gain should be known as a priori.
Agriculture is a critical sector for many of India's population, contributing significantly to the national economy. However, many farmers rely on traditional practices rather than data-driven insights for crop se...
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