  When developing high-speed and high-precision CNC machine tools, subsystem
coupling effects must be considered while designing the feed system to maximize
its dynamic performance. Currently, the influence of changes in control
parameters on the matching characteristics of each subsystem was not yet
considered when studying the coupling relationship between subsystems.
Therefore, it is difficult to define the law of action between subsystems under
the interference of control parameters. Hence, a new method was proposed in
this paper aiming to isolate the disturbance of control parameters and to
highlight the actions between electromechanical subsystems. This was achieved
by optimizing the servo control parameters for each configuration of
electromechanical parameters, ensuring that the feed system performance is
optimal for the observed configuration. This approach eliminated the influence
of the control subsystem on the electromechanical coupling relationship. The
approach effectiveness was verified via the integrated model of the feed
system. As such, this paper provides a reliable method to further study the
coupling mechanism of subsystems, revealing the mechanism behind the dynamic
design of feed systems.
