The text presents a scientific approach to the problem of biomechanical systems description. This approach is based on development of a universal anthropomorphic model and employment of methodology of limitational dynamic modelling (IDM). The novelty of this approach is that there appears a possibility to operate with a whole class of models, derived from the universal model on the basis of motion separation principle. This is followed by utilization of iterational procedures realizing the method of successive approximations and resulting in description of the real motion with the pre-set...