Application of Linear Optimal Control Theory to the Design of the Elevator Control System of the DHC-2 Beaver Experimental Aircraft

摘要

The design of elevator control laws for the electrohydraulic servo control valve of a DHC-2 aircraft based on measurements of actuator position and piston differential pressure such that the elevator follows as closely as possible the electrical command signals is described. State and output feedback optimal control are used. The elevator control system consists of an elevator coupled via two long, flexible cables to a system of bellcranks and rods. This latter system is connected directly to the pilot operated control column. An electrohydraulic servo actuator connected to one of the bellcranks prepares the aircraft for digital control.