braking frequency
21EBICAB — is a trade mark registered by Bombardier for the equipment on board a train used as a part of a Automatic Train Control system. EBICAB was originally derived from Ericsson s SLR system in Sweden. Most trains in Sweden an Norway uses a similar on… …
22Railway electrification system — Railway electrification supplies electrical energy to railway locomotives and multiple units so they can operate without having a reciprocating engine of their own.CharacteristicsThe main advantage of electric traction is a higher power to weight …
23Motor controller — A motor controller is a device or group of devices that serves to govern in some predetermined manner the performance of an electric motor.[1] A motor controller might include a manual or automatic means for starting and stopping the motor,… …
24Hybrid Synergy Drive — Hybrid Synergy Drive, (HSD) is a set of hybrid car technologies developed by Toyota and used in the company s Prius, Highlander Hybrid, Camry Hybrid, Lexus RX 400h, Lexus GS 450h, and Lexus LS 600h/LS 600hL automobiles. It is also used in the… …
25Emergency warning system for vehicles — Telematics technologies are self orientating open network architecture structure of variable programmable intelligent beacons developed for application in the development of intelligent vehicles with target intent to accord (blend, or mesh)… …
26Direct torque control — (DTC) is one method used in variable frequency drives to control the torque (and thus finally the speed) of three phase AC electric motors. This involves calculating an estimate of the motor s magnetic flux and torque based on the measured… …
27Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
28Overhead lines — This article is about the transmission of electrical power to road and rail vehicles. For transmission of bulk electrical power to general consumers, see Electric power transmission. For powerlines mounted on pylons, see overhead power line.… …
29Stellar rotation — is the angular motion of a star about its axis. The rate of rotation can be measured from the spectrum of the star, or by timing the movements of active features on the surface.The rotation of a star produces an equatorial bulge due to… …
302009–2011 Toyota vehicle recalls — Two of the vehicles under recall: the Toyota Camry (top) and the Toyota Corolla Three separate but related recalls of automobiles by Toy …
