Results 11 to 20 of about 3,274,537 (356)

Uncovering the hidden mechanics of upper body rotations in tennis serves using wearable sensors on Dutch professional players [PDF]

open access: yesFrontiers in Sports and Active Living
BackgroundIt is assumed that the tennis serve is performed according to the kinetic chain principle in which a proximal-to-distal sequence in peak angular velocities of subsequent body segments can be observed to reach high end point ball velocities. The
B. van Trigt   +6 more
doaj   +2 more sources

Planetary gear fault diagnosis based on instantaneous angular speed analysis [PDF]

open access: greenInternational Conference on Automation and Computing, 2017
Qiang Zeng   +4 more
openalex   +2 more sources

On Angular Speed Estimation of Rigid Bodies [PDF]

open access: yesIEEE Control Systems Letters, 2022
The problem of estimating the angular speed of a solid body from attitude measurements is addressed. To solve this problem, we propose an observer whose dynamics are not constrained to evolve on any specific manifold. This drastically simplifies the analysis of the proposed observer.
Francesco Ferrante, Gildas Besancon
openaire   +4 more sources

Analysis of impact of shaft speed and external load on the radial ball bearing lubrication regimes [PDF]

open access: yesFME Transactions, 2022
Appropriate lubrication of the rolling bearing is needed to lower the friction between the surfaces in mutual contact and their wear. A lubricant should completely separate the rolling elements from the raceways. The values that affect the efficiency and
Grujičić Rade   +5 more
doaj   +1 more source

A Hydraulic Axial Piston Pump Fault Diagnosis Based on Instantaneous Angular Speed under Non-Stationary Conditions

open access: yesLubricants, 2023
Due to the intense noise interference in hydraulic systems, it is extremely difficult to detect component faults through vibration signals. Diagnostic performance is also constrained by highly time-varying and non-stationary operating conditions.
Jia-min Liu   +3 more
semanticscholar   +1 more source

FEATURES OF THE ANGULAR SPEED DYNAMIC MEASUREMENTS WITH THE USE OF AN ENCODER

open access: yesInformatyka Automatyka Pomiary w Gospodarce i Ochronie Środowiska, 2022
Based on the most significant features of the angular velocity dynamic measurements selected by the authors, the main phases of measuring information transformation were established, which allowed to obtain new mathematical models in the form of ...
V. Kukharchuk   +7 more
semanticscholar   +1 more source

Elastic-plastic stresses in a thin rotating disk with shafthaving density variation parameter under steady-state temperature [PDF]

open access: yesKragujevac Journal of Science, 2014
Steady thermal stresses in a rotating disc with shaft having density variation parameter subjected to thermal load have been derived by using Seth's transition theory. Neither the yields criterion nor the associated flow rule is assumed here. Results are
Pankaj Thakur   +2 more
doaj   +1 more source

Embedded Control System of DC Motor Using Microcontroller Arduino and PID Algorithm

open access: yesIT Journal Research and Development, 2021
The development of technology has a positive effect on the trade sector, creating smartphones that can be utilized in all activities combined with the internet network. Activity that is currently growing is a mobile trader in the city of Pekanbaru.
Alfian Ma'arif   +2 more
doaj   +1 more source

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