Planetary Gear Trains

Arnaudov, Kiril; Karaivanov, Dimitar Petkov

doi:10.1201/9780429458521

Cited by 30 publications

(52 citation statements)

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“…All these advantages and disadvantages must be known for ad- and has been translated in English and published [2] in 2019.…”

Section: • Lower Dynamic Loading;mentioning

confidence: 99%

Planetary Gear Trains – the Main Problems Gathered in a Book

Karaivanov¹

2019

Act Scie Agri

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Planetary gear trains are used in many areas of the technic including in the agriculture and food-processing machinery. The big number of types and great diversity of design solution make the choice of the most appropriate arrangement very difficult. A big number of articles, dissertations, books on the planetary gear trains exist. In more cases they carried out a separate problem or particular arrangement of planetary gear train. This review presents a book in which the main problems of almost all of used in practice cylindrical planetary gear trains are discussed. The book is addressed to engineers (design and industrial application) as well as to students-master and PhD degrees. The book is result of both scientific and practical experience of the authors. It was written under the motto "From practice to practice".

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“…All these advantages and disadvantages must be known for ad- and has been translated in English and published [2] in 2019.…”

Section: • Lower Dynamic Loading;mentioning

confidence: 99%

Planetary Gear Trains – the Main Problems Gathered in a Book

Karaivanov¹

2019

Act Scie Agri

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“…Despite such visible advantages of PGTs over parallel shaft gear trains as high power density, large transmission ratio, multiple kinematic combinations and central coaxial transmission, 7 high-frequency whine noises induced by PGTs may cause severe engineering issues.…”

Section: Introductionmentioning

confidence: 99%

Robust optimisation of dynamic and NVH characteristics for compound power-split hybrid transmission

Han

Zhang

Yu³

2019

Proceedings of the IMechE

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In this paper, vibro-acoustic characteristics of a power-split hybrid transmission including a compound planetary gear set are investigated by numerical procedure and refined system dynamics modelling. For validation of the numerical predictions, bench tests are performed for dynamic and acoustic responses of the hybrid transmission, contribution rates of acoustic radiation power induced due to the planetary gears, support bearings, transmission shafts and the gearbox housing are estimated. In improving the noise, vibration and harshness (NVH) performance of the transmission during hybrid vehicle acceleration, traction torques of the motors against the planetary gear parametric resonance are formulated and an optimal control strategy is proposed. By real road NVH test results acquired on board of the midsize hybrid car, it is demonstrated that a significant reduction of the planetary gear whine noise is achieved. As a result, numerical approaches applied to establish relationships between torques of the two traction motors and parametric excitations of the compound planetary gear train are experimentally validated.

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“…A high grade of compactness is achieved due to internal meshing and planet positioning inside of ring gears. If one-rim planets are used, the manufacturing is greatly simplified, especially by using the carrier-less arrangement [34].Polymer material are, among others, largely used for the manufacturing of automotive parts, electrical and electronic equipment, and equipment in other industries. The most widely used polymer materials are: polyurethane (PUR), polypropylene (PP), acrylonitrile butadiene styrene (ABS), polyamides (PA), polycarbonate (PC), polyvinyl chloride (PVC), poly(phenylene oxide) (PPO),…”

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Comparison of Selected Parameters of a Planetary Gearbox with Involute and Convex–Concave Teeth Flank Profiles

et al. 2020

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This article presents a model of the geometry of teeth profiles based on the path of contact definition. The basic principles of the involute and convex–concave teeth profile generation are described. Due to the more difficult manufacturing of the convex–concave gear profile in comparison to the involute one, an application example was defined that suppressed this disadvantage, namely a planetary gearbox with plastic-injection-molded gears commonly used in vehicle back-view mirror positioners. The contact pressures and the slide ratios of the sun, planet, and ring gears with both teeth profile variants were observed and the differences between the calculated parameters are discussed.

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Planetary Gear Trains

Cited by 30 publications

References 0 publications

Planetary Gear Trains – the Main Problems Gathered in a Book

Planetary Gear Trains – the Main Problems Gathered in a Book

Robust optimisation of dynamic and NVH characteristics for compound power-split hybrid transmission

Comparison of Selected Parameters of a Planetary Gearbox with Involute and Convex–Concave Teeth Flank Profiles

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