An infinitely variable transmission (IVT) is a system that allows for a continuous (non-discrete) variation (including zero) in transmission ratio between two rotating elements. In this paper, a novel ratcheting-type IVT mechanism is presented and its geometrical design and kinematic analysis are studied in details. The proposed system contains two identical units. Each unit includes a cam with a follower, oscillatory slotted links pivoted at a shaft that can be moved vertically by a hydraulic ram (alterable transmission ratio), and a grooved wheel with an actuating rod. The input rotational motion is converted through each unit to an oscillatory angular motion of controlled amplitude. This resulting motion is rectified using a ratchet to get a unidirectional output rotational motion. Therefore, the system output motion will have a different velocity and acceleration than those of the system input. The kinematic analysis revealed that the transmission ratio can be varied continuously in a range from zero to infinity. The analysis also showed that, for particular transmission ratios, the system gives uniform output (angular velocity and acceleration) for a corresponding uniform input.
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Amjad Al-Hamood 1 ; Hazim Jamalia 1 ; Amer Imran 1 ; Oday Abdullah 2, 3 ; Adolfo Senatore 4 ; Hakan Kaleli 5
@article{CRMECA_2019__347_12_891_0,
author = {Amjad Al-Hamood and Hazim Jamalia and Amer Imran and Oday Abdullah and Adolfo Senatore and Hakan Kaleli},
title = {Modeling and theoretical analysis of a novel ratcheting-type cam-based infinitely variable transmission system},
journal = {Comptes Rendus. M\'ecanique},
pages = {891--902},
publisher = {Elsevier},
volume = {347},
number = {12},
year = {2019},
doi = {10.1016/j.crme.2019.10.005},
language = {en},
}
TY - JOUR AU - Amjad Al-Hamood AU - Hazim Jamalia AU - Amer Imran AU - Oday Abdullah AU - Adolfo Senatore AU - Hakan Kaleli TI - Modeling and theoretical analysis of a novel ratcheting-type cam-based infinitely variable transmission system JO - Comptes Rendus. Mécanique PY - 2019 SP - 891 EP - 902 VL - 347 IS - 12 PB - Elsevier DO - 10.1016/j.crme.2019.10.005 LA - en ID - CRMECA_2019__347_12_891_0 ER -
%0 Journal Article %A Amjad Al-Hamood %A Hazim Jamalia %A Amer Imran %A Oday Abdullah %A Adolfo Senatore %A Hakan Kaleli %T Modeling and theoretical analysis of a novel ratcheting-type cam-based infinitely variable transmission system %J Comptes Rendus. Mécanique %D 2019 %P 891-902 %V 347 %N 12 %I Elsevier %R 10.1016/j.crme.2019.10.005 %G en %F CRMECA_2019__347_12_891_0
Amjad Al-Hamood; Hazim Jamalia; Amer Imran; Oday Abdullah; Adolfo Senatore; Hakan Kaleli. Modeling and theoretical analysis of a novel ratcheting-type cam-based infinitely variable transmission system. Comptes Rendus. Mécanique, Volume 347 (2019) no. 12, pp. 891-902. doi : 10.1016/j.crme.2019.10.005. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2019.10.005/
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