Rudder load simulator not generating surplus torque

Abstract

The invention discloses a rudder load simulator not generating surplus torque, which belongs to the technical field of aerodynamic load simulation of an aircraft. The simulator comprises a sliding block driving motor fixed on a working table surface via a supporting table, a screw rod guide rail, a sliding block moving on the screw rod guide rail after a driving instruction of the sliding block driving motor is received, a torsion spring, an inertia disk, a speed reducer, a torque sensor, a lower computer controlling the sliding block driving motor, and an upper computer communicating with the lower computer, wherein the torsion spring is in rigid connection with the output shaft of a rudder engine room; and the torque sensor is in rigid connection with the output shaft of the rudder engine room. A loading instruction is tracked in a mode of changing the torsional rigidity of the torsion spring, and thus the surplus torque caused when the output shaft of the rudder engine room and the output shaft of a loading motor are coupled due to active rudder motion can be eliminated from the principle.

Description

technical field [0001] The invention discloses a steering gear load simulator that does not generate redundant moments, and belongs to the technical field of aircraft aerodynamic load simulation. Background technique [0002] The steering gear load simulator is a semi-physical simulation device for simulating aerodynamic load experiments on aircraft steering gear under laboratory conditions. When the load simulator works in passive loading mode, the active movement of the steering gear will cause excess torque, which seriously affects the tracking accuracy of the system load spectrum. How to compensate and suppress the excess torque is an important technical problem to be solved by the load simulator. [0003] Servo loading is divided into active loading and passive loading according to the working mode. The main disadvantages of the active loading simulator are as follows: no matter it is electric loading or hydraulic loading, excess torque will be generated, especially i...

AI Technical Summary

Problems solved by technology

Its main disadvantages: first, the weight block (or inertia block) is a constant load; second, although the working mode of the flexible rod changes with the load and rudder deflection angle, the loading gradient is constant and cannot track any load spectrum

[0004] Through targeted analysis of the shortcomings of the above two steering gear loader simulators, it can be known that in the existing steering gear loading simulator, the output shaft of the loading motor is rigidly connected with the output shaft of the steering gear cabin, and the active movement of the steering gear causes the output shaft of the steering gear cabin to Coupling with the output shaft of the loading motor will generate excess torque

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