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.

The paper reports the consideration of the problem in choice and use of the locomotive traction drive design procedure giving possibilities both in properties and parts modeling, and in the automated identification of design solutions of latter. The object model of a design solution as a structure including the totality of object descriptions allowing the synthesis of engineering solution models as a multitude of interrelated elements described in the libraries of well-known designs. The method differs from the earlier ones in which the creation of new solutions is stipulated by the definition of a prototype and then by its development in accordance with the tendencies revealed empirically. In the method developed the synthesis of a design object model is based on engineering system classifications. The integrated object model of a traction drive involves two parts: first, the multitude hierarchy of the traction drive description for different methods of an engineering solution schematization, secondly, a library which has descriptions of standard objects in the form of a hierarchal structure of functional interaction between elements (I-graph). The search of similar objects in the library takes place at the level of the definition of drive functional elements with the aid of the matrices of similarity measures. There are given offers for the increase of reliability and loading capacity of a rubber-cord clutch of a locomotive traction drive. There are obtained three patents for utility models and an invention patent on the solutions offered.

ВЫБОР ОБЪЕКТНОЙ МОДЕЛИ ТЯГОВОГО ПРИВОДА ЛОКОМОТИВАРассмотрена задача выбора объектной моде-ли технических решений механической части тяго-вого привода локомотива. Предложена модель в виде иерархии множеств описаний при разной сте-пени его схематизации и библиотеки описаний ти-повых объектов в виде иерархической структуры функционального взаимодействия между элемен-тами.Ключевые слова: математическое модели-рование, тяговый привод локомотива, автоматиза-ция проектирования, объектная модель. V.I. Vorobiev, O.V.Izmerov, M.A. Maslov OBJECT MODEL OF LOCOMOTIVE TRACTION DRIVEThe problem of choice of object model technical solutions to the mechanical part of the traction drive of the locomotive. The proposed model in a hierarchy of sets of descriptions with varying degree of schematization and the library description of the model objects in a hierarchical structure of functional interaction between the elements.