This paper presents a novel adaptive neural network nonsingular fast terminal sliding mode control method for flexible double-clamped beam systems with input saturation and distributed disturbance. Firstly, the ordina...
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ISBN:
(纸本)9798350373707;9798350373691
This paper presents a novel adaptive neural network nonsingular fast terminal sliding mode control method for flexible double-clamped beam systems with input saturation and distributed disturbance. Firstly, the ordinary differential equations of the beam system are provided. Secondly, a novel auxiliary function is employed to design a nonsingular fast terminal sliding mode controller, ensuring the stability of the closed-loop system under state constraints. Additionally, an adaptive neural network is proposed to handle possible unknown parts of the model parameters. It is demonstrated that the proposed control method can simultaneously address input saturation and distributed disturbance without requiring precise knowledge of the model. Finally, numerical simulation results illustrate the effectiveness of the proposed control approach.
Wireless sensor networks (WSNs) are integral to modern applications ranging from environmental monitoring to military operations. Despite their utility, the limited energy capacity of sensor nodes remains a critical c...
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This paper investigates the problem of stabilization control of hydroelectric generating units. Firstly, the fully actuated system model of the linear hydraulic turbine is established by using the theory of fully actu...
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ISBN:
(纸本)9798350373707;9798350373691
This paper investigates the problem of stabilization control of hydroelectric generating units. Firstly, the fully actuated system model of the linear hydraulic turbine is established by using the theory of fully actuated system. Then the control law is designed by using the direct parameterization method, which can configure the closed-loop poles of the hydraulic turbine system expectation or region and ensure the stable operation of the hydraulic turbine regulating system with a small control gain. Finally, a nonlinear active disturbance rejection control method is proposed for the internal and external disturbances in the control of the fully actuated system. The simulation results demonstrate the effectiveness of the proposed control method.
On-product overlay (OPO) control is becoming more and more critical to successful 3D heterogeneous process integration which includes wafer-to-wafer (W2W) bonding. In this work, we will present novel overlay (OVL) met...
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ISBN:
(纸本)9798350334982
On-product overlay (OPO) control is becoming more and more critical to successful 3D heterogeneous process integration which includes wafer-to-wafer (W2W) bonding. In this work, we will present novel overlay (OVL) methods and experimental metrology results on an advanced CMOS Image Sensor (CIS) W2W process. We will discuss metrology challenges such as thick wafer measurement, target design, precision, and accuracy. Different target designs will be presented and evaluated with the irArcher (R) 007 from KLA. We will demonstrate Total Measurement Uncertainty (TMU) of 1 nm on production wafers, with Tool-Induced Shift (TIS) values comparable to the current best-in-class metrology tool for single wafer OVL measurement and suitable throughput for High-Volume Manufacturing (HVM). We will highlight the importance of such precise OVL metrology tools to address the sub-50 nm OVL challenge in sub-micron pitch, wafer-to-wafer bonding applications. Inter-field and intra-field terms will be presented. Unexpected infra-field signatures will be discussed. Finally, the impact of bonding OVL on back-side lithography steps will be introduced opening interest for Advanced Process control (APC) loops.
The effectiveness of medical implants and portable wireless sensors is often compromised by the short battery life, which are essential applications in the field of biomedicine. The creation of integrated circuit arch...
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The devices with sensors that can monitor your temperature, heart rate, and other vital signs and link to the internet, known as the Internet of Things (IoT), have completely transformed the way we control health. Pro...
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The proceedings contain 214 papers. The topics discussed include: customer intent prediction using sentiment analysis techniques;validation of the global human settlement layer and NASA population data for Ukraine;a c...
ISBN:
(纸本)9781665426053
The proceedings contain 214 papers. The topics discussed include: customer intent prediction using sentiment analysis techniques;validation of the global human settlement layer and NASA population data for Ukraine;a comparison of Kubernetes and Kubernetes-compatible platforms;data mining to achieve quality of life for home automation users;special aspects of errors definition via sum codes within embedded control schemas being realized by means of Boolean complement method;exploiting VPN bonding for time critical video transmission on board drone;adaptive management of digitalization projects for efficiency increasing;NILM application for real time monitoring of appliances energy consumption used;and biometric identification via oculomotor system based on the Volterra model.
Time series forecasting plays a crucial role in practical applications such as extreme weather warning and long-term energy consumption planning. However, accurately predicting long-term trends in time series data is ...
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There has been a growing interest to adopt low-power wide-area network technology, specially LoRa, for industrial controlapplications. Its machine-to-machine communication capabilities can enable management of large-...
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ISBN:
(纸本)9798350369274;9798350369281
There has been a growing interest to adopt low-power wide-area network technology, specially LoRa, for industrial controlapplications. Its machine-to-machine communication capabilities can enable management of large-area applications (e.g., oil fields over hundreds of km(2)) or process plants that are often positioned far from the central operations center, at inconvenient or hazardous locations in difficult terrain or offshore. While recent works have studied real-time communication over LoRa, they have not considered optimizing control performance. To optimize control performance, industrial automation needs a co-design of real-time scheduling and control. Such a co-design, in general, is highly challenging due to complex dependencies between control performance, plant dynamics, and real-time communication. Existing co-design approaches for other wireless domains are not applicable to LoRa network. LoRa nodes are extremely power-constrained hindering frequent communication and scale. In this paper, we propose a highly energy-efficient and scalable framework for real-time scheduling and control co-design for a LoRa network. By taking into account LoRa characteristics, the co-design approach entails state-aware communication and control to dynamically update the sampling rates while meeting real-time constraints. To minimize communication and synchronization overhead, the co-design is decomposed through a partitioned scheduling. We consider co-design in each partition of the control loops by developing a new schedulability condition. The proposed scheduling-control co-design solution dynamically determines the sampling rates of the sensors to optimize control performance. Simulations based on NS-3 and a custom control script show that our co-design approach minimizes control cost at least by 80% as compared to the baselines.
In brain-machine interface (BMI) applications, a key challenge is the low information content and high noise level in neural signals, severely affecting stable robotic control. To address this challenge, we proposes a...
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