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On spiral wheels

L.G. Franck
1875 Journal of the Franklin Institute  
To find the pitch of both wheels : normal division It follows, then, that p.  ...  The last assumption gives two spur wheels with straight teeth, and, therefore, the lateral slidipg motion equals zero. (3).  ... 
doi:10.1016/0016-0032(75)90649-3 fatcat:tiqnxp2i65bahm6qybppie5kmm

Remainder Wheels and Group Theory

Lawrence Brenton
2008 The College Mathematics Journal  
I thank the referees and the editor for many useful suggestions regarding the content and exposition of this paper, and for calling my attention to related articles by other authors.  ...  To impose a group structure on the set of wheels displayed in Figure 3 , it is natural and intuitive just to multiply each of the numbers on one wheel by each of the numbers on another, reduce mod 39,  ...  But "bring down a zero" really means multiply by 10. That is, if r is the remainder at a particular step in the division, then the next remainder will be 10r (mod 13).  ... 
doi:10.1080/07468342.2008.11922286 fatcat:rn5cu2wlyvfh5cegvpdj5ls52a

Improved Turbine Wheel

1866 Scientific American  
the wheel; the water thus impinging on thQ fl oat, Q, at its top edge, and immediately under the upperrim, P, of the wheel, K.  ...  The seventh division of James Watt's patent of 28th of April, 1784, describes a steam carriage in tended probably for common roads.  ... 
doi:10.1038/scientificamerican08111866-95 fatcat:22ndigx5zbawppqxegb2ealqza

Resilient Wheel for Vehicles

1904 Scientific American  
The desired result is obtained by connecting each of the three parts (in ternal wheel, external wheel, and support of the middle wheels) with one of the three axles-that of the prime mover, that of the  ...  Otto's tower, in the upper division of which the ozone is mixed with water by means of an injector.  ... 
doi:10.1038/scientificamerican04161904-310 fatcat:zxhjpmovrje6podwf3bkomrhu4

Lifting Wheels for Copper Mines

1884 Scientific American  
division on .  ...  Two turns of the bead move the cobwells one small division of scale B, and as the circumference is dividf'd into hundredtbs. it .reads within one-ten-tbousalldth of an incb.  ... 
doi:10.1038/scientificamerican09061884-4230supp fatcat:w6n6fdp5ufdrpgqmyvd2mcrequ

Analysis of Wheel-Roller Contact and Comparison with the Wheel-Rail Case

Binbin Liu, Stefano Bruni
2015 Urban Rail Transit  
The replacement of the real track by a pair of rollers on the roller rig causes, however, inherent differences between wheel-rail and wheel-roller contact.  ...  differences between these two contact cases from a mathematical point of view and to find the influence factors of the differences with the final aim of better translating the results of tests performed on  ...  between the contact points on the left-hand and right-hand wheels and b is the shift angle of the contact point on the roller with respect to the vertical plane of the inertial frame caused by a non-zero  ... 
doi:10.1007/s40864-015-0028-3 fatcat:6lbkydkldjbwtcw6s2frwmbmuy

Wheel Torque Distribution of Four-Wheel-Drive Electric Vehicles Based on Multi-Objective Optimization

Cheng Lin, Zhifeng Xu
2015 Energies  
The wheel driving torque on four-wheel-drive electric vehicles (4WDEVs) can be modulated precisely and continuously, therefore maneuverability and energy-saving control can be carried out at the same time  ...  In this paper, a wheel torque distribution strategy is developed based on multi-objective optimization to improve vehicle maneuverability and reduce energy consumption.  ...  Acknowledgments This work was supported by National Natural Science Foundation of China (no.51175043).  ... 
doi:10.3390/en8053815 fatcat:lo3teh6pdreljijqc7wfuiwani

Nutation damping using a pivotable momentum wheel

C. HUBERT, D. BRUNO
1989 Journal of Guidance Control and Dynamics  
During one damping cycle, the nutation angle is reduced by 2¢. If all of the angular momentum is in the wheel (i.e., if @ =0), then ¢ = 6, and the nutation angle is reduced by twice the pivot angle.  ...  When the filtered roll rate next crosses zero, the momentum wheel pivots through an angle proportional to the roll-rate amplitude.  ... 
doi:10.2514/3.20473 fatcat:hr4kdd63arhstdcliiw2hih63q

Shuffle algebras for quivers and wheel conditions [article]

Andrei Neguţ
2021 arXiv   pre-print
We show that the shuffle algebra associated to a doubled quiver (determined by 3-variable wheel conditions) is generated by elements of minimal degree.  ...  show that the shuffle algebra, localized K-theoretic Hall algebra, and the positive half of the corresponding quantum loop group are all isomorphic; we also obtain the non-degeneracy of the Hopf pairing on  ...  Any non-zero R ∈ S can be written in the form: where we assume that the two sequences are related by (3.33).  ... 
arXiv:2108.08779v4 fatcat:4yqqqpyslrewjaumxqjsuvi3va

Wheel–rail rolling contact theory [chapter]

J.J. Kalker
1990 Mechanics and Fatigue in Wheel/Rail Contact  
Their operation, scope and limitations will be discussed, and it will be indicated to which problem(s) of wheel-rail technology each of these theories is best suited. 0043-1648/91/S3.50  ...  Division by y=|ft|i? w yields the camber spin (sin y)/R w .  ...  Carter showed that the difference between the circumferential velocity of a driven wheel and the translational velocity of the wheel over the rail has a non-zero value as soon as an accelerating or a braking  ... 
doi:10.1016/b978-0-444-88774-0.50020-1 fatcat:v6rwf4bxovdixlcm2irwlgz5rq

Wheels for Commercial Motors

Thomas Clarkson
1915 Proceedings of the Institution of Automobile Engineers  
For instance, round Chelmsford we have a division of about 20,000 troops, and the local bus service is taken possession of by them.  ...  With a pressure of as much as 12 tons on the middle of the wheel there was some deflection, but the index figure went b a k to zero, showing that it was not permanent.  ...  The wheel is cast steel and the rim is not con'tinuous, but is interrupted by a gap which is filled by a we@ tapered from back to front and vertically.  ... 
doi:10.1243/piae_proc_1914_009_012_02 fatcat:cyqchdr7znemxphsboqvzua3jq

Wheel-rail rolling contact theory

J.J. Kalker
1991 Wear  
Their operation, scope and limitations will be discussed, and it will be indicated to which problem(s) of wheel-rail technology each of these theories is best suited. 0043-1648/91/S3.50  ...  Division by y=|ft|i? w yields the camber spin (sin y)/R w .  ...  Carter showed that the difference between the circumferential velocity of a driven wheel and the translational velocity of the wheel over the rail has a non-zero value as soon as an accelerating or a braking  ... 
doi:10.1016/0043-1648(91)90018-p fatcat:nenu6oe6ofbflli2vtt6e7nzfy

Iris movement based wheel chair control using raspberry pi

Jatin Sharma, M Anbarasu, Chandan Chakraborty, M Shanmugasundaram
2017 IOP Conference Series: Materials Science and Engineering  
The number of persons who are paralyzed and therefore dependent on others due to loss of self-mobility is growing with the population.  ...  Add-ons include a system, which will be designed using Raspberry Pi and IR Camera Module. OpenCV will be used for image processing and Python is used for programming the Raspberry Pi.  ...  In binary image, black represents zero and white represents one.  ... 
doi:10.1088/1757-899x/263/5/052049 fatcat:npfaufsh2rcxraqoek3ikuswe4

An optimal wheel-torque control on a compliant modular robot for wheel-slip minimization

Avinash Siravuru, Suril V. Shah, K. Madhava Krishna
2015 Robotica (Cambridge. Print)  
The robot was tested on four different surfaces and we report an overall average slip reduction of 44% and mean wheel-torque reduction by 16%.  ...  For this type of robots, wheel-slip could offer a lot of hindrance while traversing on uneven terrains.  ...  This division is essential as the forces and moments acting on the robot change from one phase to the other.  ... 
doi:10.1017/s0263574715000685 fatcat:3qgehx3pfvg6fbsdtuew7tvkx4

Plug-to-wheel energy balance - Results of a two years experience behind the wheel of electric vehicles

Laurent De Vroey, Rafael Jahn, Mohamed El Baghdadi, Joeri Van Mierlo
2013 World Electric Vehicle Journal  
The resulting well-to-wheel efficiency is slightly better than the one of classical cars, but can still be significantly improved.  ...  In this paper, a plug-to-wheel energy balance is made of battery electrical vehicles.  ...  Acknowledgements This work has been funded and steered by Electrabel.  ... 
doi:10.3390/wevj6010130 fatcat:lmrfoviiofbgza2niu77s7isdy
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