초록 ▼

A dual redundant servomechanism for moving aircraft control surfaces is disclosed. The servomechanism is of the type whose input commands, from the pilot of the aircraft, are transmitted electrically. Force fight, which is associated with such dual servomechanisms when they are connected to a common

A dual redundant servomechanism for moving aircraft control surfaces is disclosed. The servomechanism is of the type whose input commands, from the pilot of the aircraft, are transmitted electrically. Force fight, which is associated with such dual servomechanisms when they are connected to a common aircraft control surface, is minimized. This is accomplished by providing the control system for each servomechanism with input signals which are electrically summed. Each control system includes electrical transducers which provide a signal indicative of actuator position and the pressure associated with the hydraulic motor used in each servomechanism.

대표청구항 ▼

In an aircraft having a pilot operable member and an aerodynamic control surface which moves in response to movement of the pilot operable member a dual servomechanism assembly which comprises: a displacement transducer connected to the pilot operable member for generating substantially identical fi

In an aircraft having a pilot operable member and an aerodynamic control surface which moves in response to movement of the pilot operable member a dual servomechanism assembly which comprises: a displacement transducer connected to the pilot operable member for generating substantially identical first and second command signals which are proportional to the displacement of the pilot operable member; first and second hydraulic actuators having respective first and second output members operatively connected to said control surface so as to cause movement thereof in response to movement of said actuators, said first and second hydraulic actuators being operatively interconnected whereby one of said first and second actuators drives the other upon said other becoming inoperative; first and second control systems operatively interconnecting respective first and second hydraulic actuator assemblies and said displacement transducer and responsive to respective said first and second command signals for generating respective first and second control signals for controlling respective said first and second hydraulic actuators; and sensor means for sensing force fight between said first and second hydraulic actuators, said sensor means including first and second transducer means operatively interconnecting respective said first and second hydraulic actuators and said first and second control systems for generating respective first and second feedback signals indicative of one of respective pressures within said first and second hydraulic actuators and respective positions of said first and second output members, said first feedback signal received by said first control system and said second feedback signal received by said second control system.