This paper proposes a method that combines imitation learning and reinforcement learning to improve the learning performance of autonomous vehicles. The actor model was pre-trained using expert demonstration data from...
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Digital transformation of enterprises, as one of the core issues in modern enterprise management, has become an important scenario for computer applications. This article empirically analyzes how digital transformatio...
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With the aid of the commercial ultra-precision machine tool, the tool servo diamond turning process provides stable and deterministic material removal, meeting the demands for mass production of high-end freeform surf...
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With the aid of the commercial ultra-precision machine tool, the tool servo diamond turning process provides stable and deterministic material removal, meeting the demands for mass production of high-end freeform surface optics. However, in relatively high-speed applications, the machining accuracy is limited by the heavy servo axes, even within the working bandwidth of-3 dB. Therefore, to facilitate the industrial adoption of diamond turning, a cost-effective and user-friendly programming strategy is essential for enhanced motion accuracy in commercial machine tools. This work proposes a model-free tool path modification strategy using iterative learning control (ILC), which adjusts tool path amplitude iteratively based on the error data of servo axes. By aligning the geometry-based tool path with the dynamic properties of the servo axes, such adjustments reduce tracking errors caused by frequency-based phase lag and amplitude variation effects in high-speed applications. Additionally, this strategy eliminates the need for additional complex equipment or model identification, making it well-suited for industrial applications. The fundamental principle of the proposed method is first presented, followed by a demonstration of its convergence. A series of validation experiments are conducted through trajectory tracking and diamond turning. Experimental results indicate that trajectory tracking achieves a reduction of approximately 60 % in peak-to-valley error and about 80 % in root-mean-square error with the proposed strategy. For diamond turning experiments on sinusoidal grid surfaces, the form error is significantly reduced from 903 nm to 527 nm. Further experiments confirm the long-term effectiveness of the ILC-based tool path modification strategy in high-speed applications, offering valuable insights for industrial use.
machinelearning can be successfully utilized in geotechnical designing applications, where vulnerability is a portion of nature, to create a vigorous predictive model foundation for designing parameters/behaviors. Fo...
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The proliferation of IoT devices has significantly increased global energy consumption and carbon footprint due to the reliance on computationally intensive machinelearning (ML) techniques. Traditionally implemented ...
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In the context of Chinese culture going global and the increasing important role of China on the global stage, intercultural communication competence plays an increasingly important role in terms of personal, national...
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Recent research has increasingly focused on classification rules within the big data framework, yet many bioin formatics applications still address prediction problems that involve small-sample, high-dimensional data....
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Plasmonic biosensors offer a unique opportunity to precisely control light-matter coupling in surface-enhanced infrared absorption (SEIRA) spectroscopy. However, the broadband nature of infrared spectra and the comple...
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In this paper, we present an enhanced convolutional model for indoor radio map generation, focusing on the integration of a novel ray-marching feature. We describe our machinelearning pipeline developed for the ICASS...
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This study proposes a pioneering integrated care model for elderly care service robots that integrates sentiment analysis and knowledge reasoning through a deep learning framework. The primary objective of this resear...
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