If the physical object is a sufficiently energy-consuming device, then the prefix P (power) HIL is added to the HIL to emphasize the presence of additional problems associated with the need to use current and voltage amplifiers when implementing the hardware-software interface.
The main problem of HIL is associated with the occurrence of a delay in the data exchange between parts of the system, i.e. the original system is different from the system divided into parts (HIL system). Nevertheless, when modeling HIL systems, it is strived to ensure that the simulation results are stable and adequate (ideally coincide) with the simulation results of the original system.
The stability and adequacy of the simulation results of a system divided into parts is achieved through the use of various algorithms/methods for stitching simulation results when implementing a hardware-software interface. At the moment, several algorithms are known: TM, TLM, TFA, PCD, DIM.
We propose our own method, implemented on the basis of the Poincare-Steklov filter, which provides the best results in terms of stability and adequacy of the HIL-system modeling results in comparison with known algorithms, and also allows for a multiport connection between parts of the system.
Where is HIL technology applied?
HIL technology has been implemented in various well-known universal modeling environments.
Around HIL technology, new simulation environments are being developed that specialize in applying HIL technology to various industries.
In addition, we believe that this technology can be successfully used in robotics.