Zobrazeno 1 - 10
of 154
pro vyhledávání: '"Youxin Luo"'
Publikováno v:
IEEE Access, Vol 8, Pp 6650-6661 (2020)
At present, the multiscale fuzzy entropy has been verified to be an excellent measure of the complexity for dynamic time series. However, when using to short-time time series collected in practical application, the conventional multiscale fuzzy entro
Externí odkaz:
https://doaj.org/article/6426873a12d54d5084db45ef55c720d6
Publikováno v:
Entropy, Vol 22, Iss 4, p 375 (2020)
Condition monitoring and fault diagnosis of a rolling bearing is crucial to ensure the reliability and safety of a mechanical system. When local faults happen in a rolling bearing, the complexity of intrinsic oscillations of the vibration signals wil
Externí odkaz:
https://doaj.org/article/b2427ccddad945948f6ab0ba69334b2e
Publikováno v:
Shock and Vibration, Vol 2018 (2018)
In the production and manufacturing process of hydraulic rock drill, there are small impact energy and low impact frequency, and a fault diagnosis method based on the internal mechanism testing and testing of the hydraulic rock drill is proposed. Thi
Externí odkaz:
https://doaj.org/article/d918cbe315204de8a0a3811e92c6c83e
Impact System Dynamic Characteristics of Hydraulic Rock Drill Based on an Overlapped Reversing Valve
Publikováno v:
Shock and Vibration, Vol 2018 (2018)
For the phenomenon of a hydraulic rock drill based on an underlapped reversing valve, the mechanical structure of the overlapped reversing form was proposed, which affected the pressure pulsation of the impact system, and motion of the impact piston
Externí odkaz:
https://doaj.org/article/30775a45c4de43069bedb87028608371
Publikováno v:
International Journal of Advanced Robotic Systems, Vol 10 (2013)
Machine tools based on a Stewart platform are considered the machine tools of the 21st century. Difficult problems exist in the design philosophy, of which forward displacement analysis is the most fundamental. Its mathematical model is a kind of str
Externí odkaz:
https://doaj.org/article/3d16188dbda240e0a41a43895a2c7362
Publikováno v:
International Journal of Advanced Robotic Systems, Vol 10 (2013)
The pose of the moving platform in parallel robots is possible thanks to the strong coupling, but it consequently is very difficult to obtain its forward displacement. Different methods establishing forward displacement can obtain different numbers o
Externí odkaz:
https://doaj.org/article/566da485b2d54e4c99ea002ae023050d
Publikováno v:
International Journal of Advanced Robotic Systems, Vol 10 (2013)
The forward displacement problem of the parallel robot mechanism can be converted to nonlinear equations in order to find solutions, but it is very difficult to find all solutions because of the strong coupling of the nonlinear equations. Given the p
Externí odkaz:
https://doaj.org/article/4f13717dfe754219a0c436cf60e7e52e
Publikováno v:
International Journal of Advanced Robotic Systems, Vol 9 (2012)
The hyper-chaotic least square method for finding all real solutions of nonlinear equations was proposed and the inverse displacement analysis of a general 6R manipulator was completed. Applying the D-H method, a 4 × 4 matrix transform was obtained
Externí odkaz:
https://doaj.org/article/249e39332ead46d7a24ced111fc9190a
Publikováno v:
International Journal of Advanced Robotic Systems, Vol 9 (2012)
The hyper-chaotic least square method for finding all of the real solutions of nonlinear equations was proposed and the following displacement analysis on the 33rd non-plane 2-coupled–degree nine-link Barranov truss was completed. Four constrained
Externí odkaz:
https://doaj.org/article/54cc07f4cdb34c1b91216512911c6e6d
Publikováno v:
The International Journal of Advanced Manufacturing Technology. 118:497-510
Working tooth depth is the key factor of affecting the transmission of motion and power for gear pair, which is closely related to the tooth depth of gear. To reveal the growth law of the formed teeth in the cylindrical gear rolling process with axia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6d99d555713dd27811551d925dc86d8
https://doi.org/10.1007/s00170-021-07965-9
https://doi.org/10.1007/s00170-021-07965-9