Application of a design method for integrated control to a VTOL airplane in hover

Gust Load Alleviation of an Aeroelastic System Using Nonlinear Control

“…Stauffer et al [10] designed a proportionalintegral-filter controller using nonzero setpoint formulation (PIF-NZSP) for integrated control of a vertical take-off and landing (VTOL) airplane in hover. Valasek et al [11] and Kimmett et al [12] investigated an optimal nonzero setpoint control rate weighting (NZSP-CRW) control structure to track and dock with a stationery drogue for in-flight aerial refueling with turbulence.…”