| 摘要 |
A control apparatus of a control surface of aircraft comprising a plurality of servomechanisms each including a hydraulic working oil source for supplying working oil under pressure, an actuator for driving the control surface, a servo valve for controlling the control surface, a switch valve interposed between the hydraulic working oil source and the servo valve, a bypass valve interposed between the servo valve and the actuator, a control valve connected to the bypass valve, actuator-displacement detecting means connected to the actuator to detect a drive displacement of the actuator and to output a displacement signal, and a control circuit for outputting actuating signals to the switch valve and servo valve, respectively, to drive the actuator, and for outputting a control signal to the control valve in response to the displacement signal in order to stop the actuator at a predetermined position. When either one of the servomechanism is damaged, the control of the control surface by the damaged servomechanism is released, and when all the servomechanisms are damaged, the free motion of the control surface is regulated.
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