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Dr. Shuo Liu
Zhejiang University

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0 AUV
0 Hydraulic Systems
0 Motion Control
0 Robotics
0 Marine Technology

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Journal article
Published: 15 July 2021 in Applied Sciences
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Multiobjective optimization is a common problem in the field of industrial cutting. In actual production settings, it is necessary to rely on the experience of skilled workers to achieve multiobjective collaborative optimization. The process of industrial intelligence is to perceive the parameters of a cut object through sensors and use machines instead of manual decision making. However, the traditional sequential algorithm cannot satisfy multiobjective optimization problems. This paper studies the multiobjective optimization problem of irregular objects in the field of aquatic product processing and uses the information guidance strategy to develop a simulated annealing algorithm to solve the problem according to the characteristics of the object itself. By optimizing the mutation strategy, the ability of the simulated annealing algorithm to jump out of the local optimal solution is improved. The project team developed an experimental prototype to verify the algorithm. The experimental results show that compared with the traditional sequential algorithm method, the simulated degradation algorithm designed in this paper effectively improves the quality of the target solution and greatly enhances the economic value of the product by addressing the multiobjective optimization problem of squid cutting. At the end of the article, the cutting error is analyzed.

ACS Style

Shuo Liu; Hao Wang; Yong Cai. Research on Fish Slicing Method Based on Simulated Annealing Algorithm. Applied Sciences 2021, 11, 6503 .

AMA Style

Shuo Liu, Hao Wang, Yong Cai. Research on Fish Slicing Method Based on Simulated Annealing Algorithm. Applied Sciences. 2021; 11 (14):6503.

Chicago/Turabian Style

Shuo Liu; Hao Wang; Yong Cai. 2021. "Research on Fish Slicing Method Based on Simulated Annealing Algorithm." Applied Sciences 11, no. 14: 6503.

Journal article
Published: 02 November 2020 in Sustainability
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A hydrothermal vent system is one of the most unique marine environments on Earth. The cycling hydrothermal fluid hosts favorable conditions for unique life forms and novel mineralization mechanisms, which have attracted the interests of researchers in fields of biological, chemical and geological studies. Shallow-water hydrothermal vents located in coastal areas are suitable for hydrothermal studies due to their close relationship with human activities. This paper presents a summary of the developments in exploration and detection methods for shallow-water hydrothermal systems. Mapping and measuring approaches of vents, together with newly developed equipment, including sensors, measuring systems and water samplers, are included. These techniques provide scientists with improved accuracy, efficiency or even extended data types while studying shallow-water hydrothermal systems. Further development of these techniques may provide new potential for hydrothermal studies and relevant studies in fields of geology, origins of life and astrobiology.

ACS Style

Zhujun Zhang; Wei Fan; Weicheng Bao; Chen-Tung Chen; Shuo Liu; Yong Cai. Recent Developments of Exploration and Detection of Shallow-Water Hydrothermal Systems. Sustainability 2020, 12, 9109 .

AMA Style

Zhujun Zhang, Wei Fan, Weicheng Bao, Chen-Tung Chen, Shuo Liu, Yong Cai. Recent Developments of Exploration and Detection of Shallow-Water Hydrothermal Systems. Sustainability. 2020; 12 (21):9109.

Chicago/Turabian Style

Zhujun Zhang; Wei Fan; Weicheng Bao; Chen-Tung Chen; Shuo Liu; Yong Cai. 2020. "Recent Developments of Exploration and Detection of Shallow-Water Hydrothermal Systems." Sustainability 12, no. 21: 9109.

Review
Published: 13 October 2020 in Water
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Hypoxia is becoming a serious problem in coastal waters in many parts of the world. Artificial downwelling, which is one of the geoengineering-based adaptation options, was suggested as an effective means of mitigating hypoxia in coastal waters. Artificial downwelling powered by green energy, such as solar, wind, wave, or tidal energy, can develop a compensatory downward flow on a kilometer scale, which favors below-pycnocline ventilation and thus mitigates hypoxia in bottom water. In this paper, we review and assess the technical, numerical, and experimental aspects of artificial downwelling all over the world, as well as its potential environmental effects. Some basic principles are presented, and assessment and advice are provided for each category. Some suggestions for further field-based research on artificial downwelling, especially for long-term field research, are also given.

ACS Style

Shuo Liu; Lige Zhao; Canbo Xiao; Wei Fan; Yong Cai; Yiwen Pan; Ying Chen. Review of Artificial Downwelling for Mitigating Hypoxia in Coastal Waters. Water 2020, 12, 2846 .

AMA Style

Shuo Liu, Lige Zhao, Canbo Xiao, Wei Fan, Yong Cai, Yiwen Pan, Ying Chen. Review of Artificial Downwelling for Mitigating Hypoxia in Coastal Waters. Water. 2020; 12 (10):2846.

Chicago/Turabian Style

Shuo Liu; Lige Zhao; Canbo Xiao; Wei Fan; Yong Cai; Yiwen Pan; Ying Chen. 2020. "Review of Artificial Downwelling for Mitigating Hypoxia in Coastal Waters." Water 12, no. 10: 2846.

Journal article
Published: 21 August 2020 in Applied Sciences
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The cooperative motion of multiple mobile robots has attracted wide attention due to its advantages in military, marine and aerospace fields, and formation control has become a significant technology in the realization of these tasks. However, most of the existing formation control designs of mobile robots do not consider the practical obstacles in the environment, and the maintenance of both formation and trajectory tracking while confronting the obstacles is still a challenging issue. Therefore, in this paper, a virtual-structure-based formation control approach is designed with obstacle avoidance for a system with multiple mobile robots. The basic trajectory is generated for each robot in the group and parameterized to keep the group in formation. A trajectory generator is then established regarding the obstacles, where a potential function is designed to adjust the basic trajectory and replan the reference trajectory to achieve obstacle avoidance. Then, a novel design for the path parameter is proposed to improve the performance of the robot group when encountering obstacles. Finally, a tracking controller is designed to achieve good tracking performance for robots, and the guaranteed performance is achieved via the Lyapunov theorem. A comparative simulation with three sets is carried out, where an objective function Fobj is designed to evaluate the tracking performance in the presence of obstacles. Besides this, a real experiment is implemented to further verify the effectiveness. The simulation and experimental results verify the good formation and tracking performance of the proposed design for a system with multiple mobile robots with obstacle avoidance.

ACS Style

Xuanlin Chen; Fanghao Huang; Yougong Zhang; Zheng Chen; Shuo Liu; Yong Nie; Jianzhong Tang; Shiqiang Zhu. A Novel Virtual-Structure Formation Control Design for Mobile Robots with Obstacle Avoidance. Applied Sciences 2020, 10, 5807 .

AMA Style

Xuanlin Chen, Fanghao Huang, Yougong Zhang, Zheng Chen, Shuo Liu, Yong Nie, Jianzhong Tang, Shiqiang Zhu. A Novel Virtual-Structure Formation Control Design for Mobile Robots with Obstacle Avoidance. Applied Sciences. 2020; 10 (17):5807.

Chicago/Turabian Style

Xuanlin Chen; Fanghao Huang; Yougong Zhang; Zheng Chen; Shuo Liu; Yong Nie; Jianzhong Tang; Shiqiang Zhu. 2020. "A Novel Virtual-Structure Formation Control Design for Mobile Robots with Obstacle Avoidance." Applied Sciences 10, no. 17: 5807.

Research article
Published: 04 August 2020 in Measurement and Control
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In this work, a double-cylinder viscometer is designed to measure dynamic viscosity over a pressure range from atmospheric pressure up to 150 MPa and a temperature range of 278.15–333.15 K. A high-pressure closed cavity is designed innovatively and the magnetic coupling is adopted to transfer the torque to reduce the friction; the inner cylinder with ruby bearing is designed to reduce the friction torque, thus the accuracy of the viscosity measurement is improved. The experiment of measuring the standard viscosity liquid (N10 and N35) under normal pressure and measuring the viscosity of methylbenzene under the pressure of 0.1–150 MPa were carried out, and considering all the experimental data, the uncertainty of the viscosity measurements is approximately ±3%.

ACS Style

Shuo Liu; Chenguang Xu; Tongqi Liu; Yong Cai. Designing of a double-cylinder viscometer for high-pressure liquids. Measurement and Control 2020, 53, 1482 -1492.

AMA Style

Shuo Liu, Chenguang Xu, Tongqi Liu, Yong Cai. Designing of a double-cylinder viscometer for high-pressure liquids. Measurement and Control. 2020; 53 (7-8):1482-1492.

Chicago/Turabian Style

Shuo Liu; Chenguang Xu; Tongqi Liu; Yong Cai. 2020. "Designing of a double-cylinder viscometer for high-pressure liquids." Measurement and Control 53, no. 7-8: 1482-1492.

Journal article
Published: 15 July 2020 in IEEE Access
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A novel design of the setup for testing super high-pressure high-speed switch valves is proposed that provides more accurate dynamic characteristics and reduces the hardware and energy expenses. After reviewing the traditional setups for testing high-speed switch valves, we introduced the architecture and the working principle of the novel setup. Subsequently, a numerical comparison study is performed to confirm that the novel setup provides the same conditions for testing the switch valves as the common setup. The test rig for the super high-pressure high-speed switch valve was concurrently built to confirm the feasibility of the novel idea. The experimental results demonstrated that the novel setup meets the standard of testing the super high-pressure high-speed switch valves and can measure the dynamic flow rate signal. An overall appraisal of the novel setup is conducted and its advantages and disadvantages are discussed. In conclusion, the advantages of the new design are significant when it is applied for repeatability and durability tests of the super high-pressure high-speed switch valves.

ACS Style

Chuan Ding; Yu Huang; Yuhui Zhu; Shuo Liu; Li Liu. An Investigation of the Novel Testing Setup for the Dynamic Characterization of Super High-Pressure High-Speed Switch Valves. IEEE Access 2020, 8, 130661 -130668.

AMA Style

Chuan Ding, Yu Huang, Yuhui Zhu, Shuo Liu, Li Liu. An Investigation of the Novel Testing Setup for the Dynamic Characterization of Super High-Pressure High-Speed Switch Valves. IEEE Access. 2020; 8 ():130661-130668.

Chicago/Turabian Style

Chuan Ding; Yu Huang; Yuhui Zhu; Shuo Liu; Li Liu. 2020. "An Investigation of the Novel Testing Setup for the Dynamic Characterization of Super High-Pressure High-Speed Switch Valves." IEEE Access 8, no. : 130661-130668.

Journal article
Published: 06 May 2020 in Sustainability
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Artificial downwelling, which is an ecological engineering method, potentially alleviates bottom hypoxia by bringing oxygen-rich surface water down below the pycnocline. However, the downward flow is likely to disturb sediments (or induce sediment resuspension) when reaching the bottom and then have unwanted side effects on the local ecosystem. To evaluate this, our paper presents a theoretical model and experimental data for the sediment resuspension caused by artificial downwelling. The theoretical model considers the critical conditions for sediment resuspension and the scour volume with the downwelling flow disturbing sediment. Experiments with altered downwelling flow speeds, discharge positions relative to the bottom, and particle sizes of sediment were conducted in a water tank, and the results were consistent with our theoretical model. The results show that the critical Froude number (hereinafter Fr) for sediment resuspension is 0.5. The prevention of sediment resuspension requires the downwelling flow speed and the discharge position to be adjusted so that Fr < 0.5; otherwise a portion of sediment is released into the water and its volume can be predicted by the derived formulation based on the Shields theory. Furthermore, sediment resuspension has side effects, such as a water turbidity increase and phosphorus release, the magnitudes of which are discussed with respect to engineering parameters. Further study will focus on field experiments of artificial downwelling and its environmental impacts.

ACS Style

Wei Fan; Weicheng Bao; Yong Cai; Canbo Xiao; Zhujun Zhang; Yiwen Pan; Ying Chen; Shuo Liu. Experimental Study on the Effects of a Vertical Jet Impinging on Soft Bottom Sediments. Sustainability 2020, 12, 3775 .

AMA Style

Wei Fan, Weicheng Bao, Yong Cai, Canbo Xiao, Zhujun Zhang, Yiwen Pan, Ying Chen, Shuo Liu. Experimental Study on the Effects of a Vertical Jet Impinging on Soft Bottom Sediments. Sustainability. 2020; 12 (9):3775.

Chicago/Turabian Style

Wei Fan; Weicheng Bao; Yong Cai; Canbo Xiao; Zhujun Zhang; Yiwen Pan; Ying Chen; Shuo Liu. 2020. "Experimental Study on the Effects of a Vertical Jet Impinging on Soft Bottom Sediments." Sustainability 12, no. 9: 3775.