scholarly journals Directing Coupled Motion with Light: A Key Step Toward Machine-Like Function

2021 ◽  
Author(s):  
Romain Costil ◽  
Mira Holzheimer ◽  
Stefano Crespi ◽  
Nadja A. Simeth ◽  
Ben L. Feringa
Keyword(s):  
2022 ◽  
Vol 10 (1) ◽  
pp. 113
Author(s):  
Tao He ◽  
Dakui Feng ◽  
Liwei Liu ◽  
Xianzhou Wang ◽  
Hua Jiang

Tank sloshing is widely present in many engineering fields, especially in the field of marine. Due to the trend of large-scale liquid cargo ships, it is of great significance to study the coupled motion response of ships with tanks in beam waves. In this study, the CFD (Computational Fluid Dynamics) method and experiments are used to study the response of a ship with/without a tank in beam waves. All the computations are performed by an in-house CFD solver, which is used to solve RANS (Reynold Average Navier-Stokes) equations coupled with six degrees-of-freedom solid-body motion equations. The Level Set Method is used to solve the free surface. Verification work on the grid number and time step size has been conducted. The simulation results agree with the experimental results well, which shows that the numerical method is accurate enough. In this paper, several different working conditions are set up, and the effects of the liquid height in the tank, the size of the tank and the wavelength ratio of the incident wave on the ship’s motion are studied. The results show the effect of tank sloshing on the ship’s motion in different working conditions.


2018 ◽  
Vol 148 ◽  
pp. 141-148 ◽  
Author(s):  
Jian Yin ◽  
Yi Wang ◽  
Xiaohan Yan ◽  
Huaiyu Hou ◽  
Jing Tao Wang

1991 ◽  
Vol 113 (3) ◽  
pp. 451-457 ◽  
Author(s):  
Hua-Yi Chuang ◽  
Chang-Huan Liu

Cross-coupled controllers have been proposed for improving contouring accuracy of multiaxis machine tools. However, during cross-coupled motion control, increasing contour feedrate may result in larger contour errors. In order to increase feedrate and hence productivity without sacrificing the contouring performance, this paper presents an adapative feedrate control strategy based on a linear perturbed model. The method effectively closes the feedback loop between the contour error and feedrate. An experimental biaxial control system is constructed to implement the proposed strategy. Both computer simulation and experiments have verified that desired contouring accuracy can be achieved.


2014 ◽  
Vol 70 (2) ◽  
pp. I_1051-I_1055
Author(s):  
Satoshi MIYAZAKI ◽  
Masahide TAKEDA ◽  
Yoshinosuke KURAHARA ◽  
Takeo ASANUMA ◽  
Muneo TSUDA ◽  
...  
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