velocity measure
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2020 ◽  
Vol 9 (1) ◽  
pp. 1812-1816

COMSOL Multiphysics software is multipurpose software which can be used in every field. COMSOL Multiphysics to have less work in India. I have to review many papers on COMSOL but all the papers out of India. I have decided to work on COMSOL Multiphysics. This paper presents laminar flow inside the pipeline to calculate velocity and pressure to using valve in open and close case along the pipeline. I have research on leakage detection in water supply distribution network. For this purpose I have designed a multiple size pipes and multiple size valves in AutoCAD software.


Author(s):  
Jian Wang ◽  
Aleksandr Y. Krasnov ◽  
Sergey A. Chepinskiy ◽  
Huimin Liu ◽  
Yifan Chen ◽  
...  

Author(s):  
Jian Wang ◽  
Aleksandr Y. Krasnov ◽  
Sergey A. Chepinskiy ◽  
Huimin Liu ◽  
Yifan Chen ◽  
...  

2016 ◽  
Vol 24 (01) ◽  
pp. 51-61 ◽  
Author(s):  
T. D. FRANK

A model for gait transitions from walking to running is proposed. The model is based on the theory of pattern formation and synergetics. Walking and running are considered as spatiotemporal patterns, while walk-to-run and run-to-walk transitions are regarded as bifurcations. Consequently, the model is cast in the form of coupled amplitude equations as known in the literature on pattern formation. It is shown that the model can reproduce hysteretic gait transitions that have been observed in experimental studies with humans walking on treadmills when locomotion speed is gradually increased and decreased. The control parameter is an appropriately rescaled velocity measure, the so-called Froude number, which is a body-scaled parameter that takes leg length into account. It is shown that the model can reproduce observed gait transitions for individuals and populations. In particular, probabilistic functions describing gait transitions on the population level can be defined that resemble the experimentally determined probabilistic function.


2013 ◽  
Author(s):  
Allan De Medeiros Martins ◽  
Samaherni Morais Dias ◽  
Kurios Queiroz

2012 ◽  
Vol 588-589 ◽  
pp. 2093-2096
Author(s):  
Bo Huang

In the distributed satellite SAR system, satellite attitude change bring on baseline error between physical baseline and effective baseline and echo phase error. If the errors aren’t corrected, it may induce velocity-measure error. In this paper, we first respectively analyze the Influence of the satellite attitude to effective baseline and velocity-measure precision, and build the corrected model of baseline. Then we also analyze the synthetical Influence of that. The simulation results show that the validity and the necessary of the corrected model of baseline, and it is presented that the correctional curves of the baseline error and the velocity-measure error.


Author(s):  
Esra Erten ◽  
Olga Chesnokova ◽  
Irena Hajnsek ◽  
Andreas Reigber ◽  
Laurent Ferro-Famil

2012 ◽  
Vol 32 (11) ◽  
pp. 1114004
Author(s):  
王峰 Wang Feng ◽  
彭晓世 Peng Xiaoshi ◽  
刘慎业 Liu Shenye ◽  
蒋小华 Jiang Xiaohua ◽  
徐涛 Xu Tao ◽  
...  

2011 ◽  
Vol 305 ◽  
pp. 149-153 ◽  
Author(s):  
Hong Bo Liao ◽  
Xiao Yao Zhou ◽  
Lian Chao Zhang ◽  
Da Peng Fan

A CPLD-based Photoelectric encoder that measures angle and angular velocity was designed aiming at precise requirements on angle and angular velocity measures in photo-electric servo system. Based on the work principle of photoelectric encoder, a segmented velocity-measure algorithm based on different measure time intervals was presented, and the concrete process in the environment of Isplever Project Navigator was detailed described. Finally, DSP processor TMS320F2812 and CPLD chip LC4512V-75T176 were used for verification. The result showed that this circuit has the features of realization-simple, high measure precision and reliability as well as good commonality. It will lay a solid foundation for the realization of photoelectric servo system’s digital control.


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