I am trying to recreate a one-mass model of a y-axis feed drive as a sub-system of a CNC machine on Simulink. The model diagram is readily available from research paper, but I can't recognize these transfer function blocks. Are these custom blocks I can build on Matlab? Kp and Tn are supposed to be proportional and integral gains of a velocity controller, respectively; while Te is the electrical drive time constant.
Also, 'Tn.s' means that Tn is a function of s or is this Tn dot s?
Thank you for the help.