IP Controller Design for Uncertain Two-Mass Torsional System Using Time-Frequency Analysis

Figure 6

The velocity step responses of the drive side and the load side as well as their results of the FFT: (a) velocity step response of drive side, (b) velocity step response of load side, (c) FFT result of velocity step response of drive side, and (d) FFT result of velocity step response of load side.

(a)

(b)

(c)

(d)