any of the teeth or projections on the rim of a gearwheel or sprocket
2.
a gearwheel, esp a small one
3.
a person or thing playing a small part in a large organization or process
verbWord forms: cogs, cogging or cogged
4. (transitive) metallurgy
to roll (cast-steel ingots) to convert them into blooms
Word origin
C13: of Scandinavian origin; compare Danish kogge, Swedish kugge, Norwegian kug
Examples of 'cogging' in a sentence
cogging
In order to reduce the cogging force two techniques are combined.
Lo Doudou Sarr, Amara Yacine, Barakat Georges, Chabour Ferhat 2018, 'Cogging force reduction in linear tubular flux switching permanent-magnet machines',Open Physicshttp://www.degruyter.com/view/j/phys.2018.16.issue-1/phys-2018-0035/phys-2018-0035.xml?format=INT. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
It helps to reduce the cogging torque.
Guo Hong, Xu Jinquan, Kuang Xiaolin 2015, 'A novel fault tolerant permanent magnet synchronous motor with improved optimal torquecontrol for aerospace application', Chinese Journal of Aeronauticshttp://www.sciencedirect.com/science/article/pii/S1000936115000242. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
When the magnet embrace increases, the value of the cogging torque reduces.
M. Yildirim, H. Kurum, D. Miljavec, S. Corovic 2018, 'Influence of Material and Geometrical Properties of Permanent Magnets on Cogging Torqueof BLDC', Engineering, Technology & Applied Science Researchhttp://etasr.com/index.php/ETASR/article/view/1725. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The main advantages of this generator are the low cogging force and high efficiency.
Abdalla Izzeldin, Zainal A. Ezrann Z., Ramlan Nur Amalina, Firmansyah, Aziz Abd. RashidA., Heikal Morgan 2017, 'Free piston linear generator for low grid power generation', MATEC Web of Conferenceshttps://doi.org/10.1051/matecconf/201713102007. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
However, this increases the cogging torque, which can cause high noise and vibration.
Myeong-Hwan Hwang, Hae-Sol Lee, Se-Hyeon Yang, Gye-Seong Lee, Jong-Ho Han, Dong-HyunKim, Hyeon-Woo Kim, Hyun-Rok Cha 2019, 'Cogging Torque Reduction and Offset of Dual-Rotor Interior Permanent Magnet Motorin Electric Vehicle Traction Platforms', Energieshttps://www.mdpi.com/1996-1073/12/9/1761. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The primary methods of reducing the cogging torque involve either electric control or mechanical means.
Myeong-Hwan Hwang, Hae-Sol Lee, Hyun-Rok Cha 2018, 'Analysis of Torque Ripple and Cogging Torque Reduction in Electric Vehicle TractionPlatform Applying Rotor Notched Design', Energieshttps://www.mdpi.com/1996-1073/11/11/3053. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Therefore, analytical tools are also used to obtain the cogging torque and torque ripple.
Ahmed Hemeida, Bert Hannon, Hendrik Vansompel, Peter Sergeant 2016, 'Comparison of Three Analytical Methods for the Precise Calculation of Cogging Torqueand Torque Ripple in Axial Flux PM Machines', Mathematical Problems in Engineeringhttp://dx.doi.org/10.1155/2016/2171547. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Cogging torque creates variable reluctance of the air gap because of slots existence.
Amir Hossein Tavakol Zadeh, Javad Faiz, Ghazanfar Shahgholian 2013, 'Comparison of Two Cogging Torque Reducing Methods of 6-Poles Single Phase SMPM', Journal of Intelligent Procedures in Electrical Technologyhttp://jipet.iaun.ac.ir/pdf_4189_4501d392f40b9ba7df7cbc41b5d59add.html. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)