Abstract
The problems of traction properties increase in locomotives are considered. The necessity in devices for instantaneous control of a friction coefficient of wheels and rails based on the impact of electric current or a magnetic field upon a wheel/rail contact area. There are defined basic fields of researches essential for the actual realization of such devices. It is defined that devices based on electric current impact require the introduction of considerable changes in the units of a crew part for wheel pair insulation and searches of problem solution in the separation of traction current and control one and the prevention of control current impact upon alarm systems. It is offered to consider magnetic amplifiers of adhesion as a solution of a short-term outlook which can be introduced in an existing locomotive fleet and those using current impact as a solution of newly-developed promising machines. There is offered a design of an individual traction drive simplifying a problem in the arrangement of devices for instantaneous control of a friction coefficient.
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