A velocity-command controller for a VTOL aircraftA technique is presented for calculating feedback and feedforward gain matrices that enable a VTOL aircraft to track input commands of forward and vertical velocity while maintaining acceptable responses to pilot inputs. Leverrier's algorithm is used for determining a set of state-variable, feedback gains that force the closed-loop poles and zeros of one pilot-input transfer function to pre-selected positions in the s-plane. This set of feedback gains is then used to calculate the feedback and feedforward gains for the velocity-command controller. The method is computationally attractive since the gains are determined by solving systems of linear, simultaneous equations. The method has been used in a digital simulation of the CH-47 helicopter to control longitudinal dynamics.
Document ID
19770045782
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Reid, G. F. (Virginia Military Institute Lexington, Va., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1976
Subject Category
Aircraft Stability And Control
Meeting Information
Meeting: Joint Automatic Control Conference on Productivity