Blocking-tolerant differential dual-redundancy steering engine

Abstract

The invention discloses a blocking-tolerant differential dual-redundancy steering engine. The blocking-tolerant differential dual-redundancy steering engine comprises a first redundancy system, a second redundancy system, a frame, a rudder shaft and a mounting seat, wherein a gear processed into a whole is arranged between a first screw nut and a second screw nut, and the first redundancy system and the second redundancy system realize meshing differential motion through the first screw nut and the second screw nut. According to the blocking-tolerant differential dual-redundancy steering engine, the redundant blocking-tolerant function is achieved, and the dual-redundancy design is realized from the four aspects of a control circuit, a motor, a potentiometer and a mechanical structure; andthe problems of asynchronous motion and force interference of the dual-redundancy system are solved, and a differential output function is achieved. The dual-redundancy steering engine has wide applicability, and can be used as a dual-redundancy actuator by changing the matching mounting form of an output shaft and the mounting seat and the structural size of the output shaft, so that various aerofoils such as flaps, ailerons and rudders can be controlled to move.

Description

Technical field [0001] The invention belongs to an electromechanical servo mechanism in a flight control system, and specifically relates to a blocking-tolerant differential type double redundancy steering gear. Background technique [0002] In various types of aerospace aircraft, the flight control system realizes various wing surface movements such as flaps, ailerons, and rudders by controlling the steering gear. Therefore, the steering gear system is an indispensable and key component of the flight control system. Whether it works reliably or not directly determines whether the aircraft is operating normally. However, for any system, the possibility of failure is always objective. Although the overall reliability of the system can be improved by improving the quality of the components of the system, strengthening the protection of the components, and even improving the design, it is necessary A great price is paid, and the increase in reliability is not significant. The redu...

AI Technical Summary

Problems solved by technology

Patent CN104600901A discloses "a four-redundancy electromechanical servo mechanism". This mechanism drives a large gear and a harmonic reducer through four motor pinion gears. If there is a contact fatigue or bending fatigue failure in the large gear, the entire servo mechanism will The number of failure points will be magnified by four times. Therefore, this mechanism only realizes the margin design for the motor stuck fault, and at the same time increases the possibility of the transmission mechanism stuck fault

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