Selection of standard dynamic model for control systems of mechatronic modules

The choice of the form and parameters of root distribution of the characteristic equation which define dynamic model of mechatronic modules is considered. Time and frequency response of the most known distributions are investigated. Analytical relations and techniques of practical calculations of parameters of distributions for given value of bandwidth are offered. It is shown that Besselian root distribution gives advantages on speed and monotony before other distributions and provides the minimum distortions at realization of control signals also.