Yizheng Zhang

Unification Stability Analysis of Continuously Adjustable Reactor Under Four Operation Modes

Yizheng Zhang, Dayi Li, Jianjun Sun, Zhu Liu et autres

To ensure the stable operation of the continuously adjustable reactor under four distinct operating modes—current-controlled current source (CCCS), current-controlled voltage source (CCVS), voltage-controlled current source (VCCS), and voltage-controlled voltage source (VCVS)—this paper presents a unified stability analysis framework. First, the fundamental architecture …

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Development and performance of CO2-responsive foam fracturing fluid

Mingwei Zhao, Yizheng Zhang, Xiangjuan Meng, Xuguang Song et autres

CO 2 foam fracturing fluid can effectively integrate CCUS technology into oil and gas field development, and its core advantages include low water consumption, excellent flowback performance, and strong sand-carrying capacity. For these reasons, it has received increasing attention in the oil …

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Active Nanofluids for Enhanced Shale Oil Recovery: Synergistic Imbibition and Multiscale Pore Access

Zixuan Wang, M.L. Gao, Na Ru Zhao, Liangfei Xiao et autres

Shale oil development faces challenges such as rapid production decline and high-cost formation damage caused by refracturing. To address these issues, this study proposes an active silica-based nanofluid with a total concentration of 0.12 wt % (0.045 wt % nanoparticles and 0.075 …

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Adsorption–Desorption–Seepage Characteristics and Deformation Mechanism of Confined Coal for Flue Gas under Different Water Saturations

Yang Ding, Shugang Li, Haifei Lin, Yizheng Zhang et autres

The excessive discharge of flue gas degrades air quality, while its injection into coal seams mitigates pollution and enables carbon dioxide storage. This study investigates the adsorption, desorption, and seepage mechanisms of flue gas in coal seams through gas–solid coupling tests under …

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Study on the Enhanced Oil Recovery and Mechanism of Active Nanofluids in Shale Oil Reservoirs

Zixuan Wang, Mingwei Gao, Na Ru Zhao, Liangfei Xiao et autres

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Lifelike agility and play in quadrupedal robots using reinforcement learning and generative pre-trained models

Lei Han, Qingxu Zhu, Jiapeng Sheng, Chong Zhang et autres

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HumanVLA: Towards Vision-Language Directed Object Rearrangement by Physical Humanoid

XU Xin-yu, Yizheng Zhang, Yong–Lu Li, Lei Han et autres

Physical Human-Scene Interaction (HSI) plays a crucial role in numerous applications. However, existing HSI techniques are limited to specific object dynamics and privileged information, which prevents the development of more comprehensive applications. To address this limitation, we introduce HumanVLA for general object …

TossNet: Learning to Accurately Measure and Predict Robot Throwing of Arbitrary Objects in Real Time With Proprioceptive Sensing

Lipeng Chen, Kun Zhang, Yizheng Zhang, Longfei Zhao et autres

Accurate measuring and modeling of dynamic robot manipulation (e.g., tossing and catching) is particularly challenging, due to the inherent nonlinearity, complexity, and uncertainty in high-speed robot motions and highly dynamic robot–object interactions happening in very short distances and times. Most studies leverage …

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HumanVLA: Towards Vision-Language Directed Object Rearrangement by Physical Humanoid

XU Xin-yu, Yizheng Zhang, Cewu Lu, Lei Han

QR Code-Based Self-Calibration for a Fault-Tolerant Industrial Robot Arm

Yizheng Zhang, Wangshu Zhu, André Rosendo

Malfunctions on industrial robots can cost factories 22000 dollars per minute. Although the benefits of a fault-tolerant robot arm are clear, redundant sensors would steeply add to the costs of such robots while machine learning-based methods would spend too much time learning …

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