An Asymmetric Hysteresis Model and Parameter Identification Method for Piezoelectric Actuator

Figure 8

The hysteresis loops of the PZT actuator obtained by experimental data and the response for the identified hysteresis model using MPSO algorithm under the cosine input voltage 𝑢₁(𝑡): (a) Case 1, (b) Case 2, (c) Case 3, and (d) Case 4.

(a)

(b)

(c)

(d)