ON THE STABILITY OF THE FOUR-POLE POINCARE-STEKLOV FOR SOLVING TASKS OF HARDWARE IN THE LOOP MODELING OF SYSTEMS
Abstract
The article considers the stability of the Poincare–Steklov filter both from the point of view
of the theory of four-poles and from the point of view of iterative numerical methods for solving a
system of linear algebraic equations. HIL simulation involves splitting the initial system into parts, with one part being modeled numerically on a computer, and the second part is represented by a real
physical object. The parts of the system exchange data with each other through a hardware-software
interface, which can be implemented in different ways and should ensure stability, as well as convergence
of the results of HIL simulation to the results of modeling the original system. The variants of
constructing software and hardware interfaces ITM, TLM, TFA, PCD, DIM, GCS and the Poincare-
Steklov filter are described in the relevant literature sources. At the first stage, the article formulated
in a generalized form the problem of analyzing the stability of a system divided into parts using the
Poincaré-Steklov filter. The parameters of this system are found. At the second stage, the analysis of
the stability of the system divided into parts was carried out both from the point of view of the theory
of quadripoles and numerical methods for solving a system of linear algebraic equations. At the next
stage, the article presents the results of numerical modeling of the initial and partitioned system in
MATLAB. When modeling in parts, the parts of the system exchanged data with each other at each
step of the simulation only once with a delay of h. This method of numerical modeling of a system
divided into parts is as close as possible to the processes occurring during HIL modeling of systems.
A comparison of the obtained simulation results of the initial and fragmented system allowed us to
conclude that the Poincare-Steklov filter, with the correct choice of values of stabilizing parameters,
allows for stability and convergence of the results of HIL modeling of systems, and can also easily
ensure the stability of the results of PHIL modeling.
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