Inverse Model Construction for Control Implementation ofMacro Fiber Composite Actuators Operating in HystereticRegimes

摘要

Macro Fiber Composite (MFC) actuators utilize PZT fibers embedded in an epoxy matrix for structural actu-ation. Due to their construction, they are lightweight and provide broadband inputs. Significant advantages ofMFC actuators are their high performance, durability, and flexibility when compared to traditional piezoceramicactuators. They are presently being considered for a range of applications including positioning of membranemirrors and structural control in the aerospace and automotive industry. However, they exhibit varying degrees ofhysteresis and constitutive nonlinearities throughout their operating range that must be incorporated in modelsto achieve the full capabilities of the materials. In this paper, hysteresis is modeled using the homogenized energymodel. The inverse model is then used to construct an inverse compensator framework suitable for subsequentcontrol design. The performance of the inverse compensator is illustrated through a numerical example.