搜索结果: 1-11 共查到“工学 traction”相关记录11条 . 查询时间(0.52 秒)
A fuzzy model for an increase in locomotive traction force
railway locomotive traction force adhesion skidding fuzzy control linguistic variables optimization
2010/10/29
This paper deals with the process of traction force realization described by a suitable mechanical model and is pointed to the adhesion phenomenon as a physical one, i.e. is a suitable factor that the...
The aspect of vector control using the asynchronous traction motor in locomotives
inverter traction converter vector control locomotive asynchronous traction motor encoder
2010/11/1
The article examines curves controlling asynchronous traction motors increasingly used in locomotive electric drives the main task of which is to create a tractive effort-speed curve of an ideal locom...
Controlling Rail Potential of DC Supplied Rail Traction Systems
Rail Transit Earthing Rail Potential Control
2009/7/28
Most modern DC electrified mass transit systems use a totally floating earth as their grounding strategy. A well-known problem related with totally floating systems is that the touch potentials can be...
Automobile braking and traction characteristics on the different road surfaces
automobile braking parameters deceleration coefficient of traction different road surfaces
2010/11/1
The present article depicts the results of the investigation into automobile braking parameters and traction characteristics on the different road surfaces. The results of the investigation into autom...
Electric drives of traction rolling stocks with ac motors
voltage frequency power moment tractive force locomotive speed magnetic field
2010/11/2
The paper considers the variation of circuit design of the electric drives in traction rolling stocks when traditional DC electric machines are replaced with AC electric machines. Simplified circuit d...
Rectifier transformers in electric traction substations – different designs
electric traction energy transformation rectifiers transformers n-pulse systems harmonic current spectrum
2010/11/2
Electric traction in Poland is supplied with dc voltage which is obtained from the power grid via traction substations equipped with transformers and rectifiers. The paper gives the results of the inv...
Investigation of fuel consumption of non-scheduled trains thermal traction
thermal traction fuel consumption non-scheduled train traffic relative resistance train-track interaction wear
2010/11/2
This article deals with the calculation of fuel consumption of trains with unpredicted scheduling (non-scheduled trains). The need for such investigation was stimulated by the fact that because of man...
The determination of a complex criterion for assessing the performance of traction rolling stocks
locomotive diesel trains rolling stocks
2010/11/2
For assessing the quality of rolling stocks, the research was made into the operational expenses aimed to derive their relation with the time of rolling stock operation which could be used as a basis ...
Peculiarities of traction forces in wheel/rail contact area
railway locomotive traction force wheel and rail contact slip velocity wheel profile adhesion
2010/11/3
Traction force and train movement stability dependence on division of forces involved in wheel/rail contact area are the main subjects of this article. The influence of wheel/rail contact properties i...
The influence of asymmetry of streams of loads on the choice of traction rolling-stocks
asymmetry streams of loads the choice of traction rolling-stocks
2010/11/4
The influence of asymmetry of streams of loads on the choice of traction rolling-stocks.
Usage optimization of rolling-stocks of traction
Usage optimization rolling-stocks traction
2010/11/4
Working under market conditions matters (issues or questions) regarding stocktaking (registration) of property (resources) and rational usage are very urgent. The formed mathematical model consists of...