To solve the problems of nonlinearity, complex reaction mechanism, high energy consumption, etc. of continuous stirred tank reactor (CSTR) in chemical production, this paper combines real-Time optimization (RTO) with ...
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This study explores the field of intelligentcontrol Systems (ICS) and how they have revolutionized robotics and industrial automation. The benefits of ICS over conventional PID control techniques are examined in this...
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The intricate multi-segment structure of human foot, which enables versatile and adaptable movement, has attracted attention to the development of biomimetic feet. However, directly imitating biological multi-segment ...
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ISBN:
(纸本)9798350385731;9798350385724
The intricate multi-segment structure of human foot, which enables versatile and adaptable movement, has attracted attention to the development of biomimetic feet. However, directly imitating biological multi-segment foot structures can pose challenges in both mechanical and control systems due to their inherent complexity. This study aims to investigate the synergy and workload distribution of ankle-foot complex joints during walking to simplify the design of biomimetic multi-segment feet. We collected motion data of ankle-foot complex joints across various ground slopes (-10 degrees, -5 degrees, 0 degrees, 5 degrees, 10 degrees). We conducted hierarchical clustering analysis, focusing on seven joints: ankle, subtalar, talonavicular, calcaneocuboid, medial and lateral tarsometatarsal, and metatarsophalangeal joints, to elucidate their synergistic patterns. Based on these joint synergies, we propose an underactuated design concept for biomimetic multi-segment feet. This approach utilizes the ankle joint as the actuation source, with other joints interconnected to it. Furthermore, by analyzing the distribution of workload among joints throughout the gait cycle, we adjusted the configurations of certain joints. Specifically, we considered the calcaneocuboid, medial, and lateral tarsometatarsal joints, which exhibit roughly equivalent positive and negative work, as elastic joints, and the metatarsophalangeal joints, primarily involved in negative work, as damping joints. Simulation results confirm that our multi-segment foot design enables multidimensional humanoid motion using a single actuation source.
Fish surface damage detection is an indispensable part of aquaculture. This study proposes an improved YOLOv7 network based on the coordinate attention (CA) mechanism and the Scylla-intersection over Union (SIOU) loss...
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ISBN:
(数字)9789819607921
ISBN:
(纸本)9789819607914;9789819607921
Fish surface damage detection is an indispensable part of aquaculture. This study proposes an improved YOLOv7 network based on the coordinate attention (CA) mechanism and the Scylla-intersection over Union (SIOU) loss for automatic fish surface damage identification. The CA is embedded in the backbone of the YOLOv7 to capture the direction-aware and position-sensitive information across channels, enabling the model to enhance the discriminative feature of fish damage and suppress background interference. Moreover, the SIOU localization loss is adopted to replace the complete cross union (CIoU) loss in the original YOLOv7. It improves the convergence speed and the detection efficiency of the model by considering the orientation information between the real box and the predicted box. A fish surface damage dataset is constructed using data collected from an actual farm vessel. Extensive experimental results demonstrate that the proposed method is superior to the original YOLOv7 network, with an enhancement in average precision (at an intersection over the union of 0.5) from 78.90% to 80.60%.
作者:
Gubankov, AntonGornostaev, IgorInstitute of Automation and Control Processes
FEB RAS M.D. Ageev Institute of Marine Technology Problems Admiral G.I. Nevelskoy Maritime State University Robotics Laboratory Laboratory of Intelligent Information Systems for Marine Robots Laboratory of Marine Unmanned Aviation and Marine Aviation Systems Vladivostok Russia Institute of Automation and Control Processes
FEB RAS M.D. Ageev Institute of Marine Technology Problems Admiral G.I. Nevelskoy Maritime State University Robotics Laboratory Laboratory of Robotic Systems Laboratory of Marine Unmanned Aviation and Marine Aviation Systems Vladivostok Russia
The article presents the results of the development of a method for the automatic formation of reference speeds for autonomous unmanned aerial vehicles of multirotor type, performing specified missions (such as monito...
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In response to the problem of poor detection performance of the traditional Sobel operator in edge detection, a high-precision edge detection algorithm based on Sobel operator-assisted Holistically-nested Edge Detecti...
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To enhance Adaptive Cruise control (ACC) performance, a two-layer controller integrating Model Predictive control (MPC) with PID strategies was designed. This optimized the system's control logic, improving respon...
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Virtual coupling (VC) represents a cutting-edge railway technology that enables unit trains to operate closely together as a coordinated unit without physical connections, enhancing efficiency and capacity on railway ...
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The dynamics and nonlinearity of combined elastic rimless wheels(CERW) walking semi-passively along an inclined plane with bionic control is studied in this work. First, the dynamic model of CERW is established using ...
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This paper presents GazeRace, a novel system that leverages eye-tracking technology for intuitive drone control. Using the MediaPipe library, the system translates eye movements into precise drone commands, enabling e...
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