Nonlinear compensation device for hydraulic booster with double chambers
A nonlinear compensation and hydraulic assist technology, applied in the field of flight control, can solve the problems of large influence of rudder deflection and influence on rudder deflection, and achieve the effect of ensuring left-right symmetry and eliminating nonlinear errors.
Active Publication Date: 2018-05-29
中航通飞华南飞机工业有限公司
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Problems solved by technology
Usually, the booster is installed by directly pushing the rudder surface or connecting the rudder surface by converting the rocker arm. This nonlinearity has a great influence on the deflection of the rudder surface.
Therefore, when the input displacement of the existing booster is larger, the output displacement of the hydraulic booster changes more relative to the input displacement, thereby affecting the deflection of the rudder surface
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[0018] The present invention will be further described in detail below in conjunction with examples, but the implementation of the present invention is not limited thereto.
[0019] In the non-linear compensation of the external feedback dual-chamber hydraulic booster, the expected effect cannot be achieved from a single component or finished product. Non-linear compensation must be performed in two aspects: on the one hand, the differential design of the control system itself is compensated for the external feedback The input displacement characteristics of the dual-chamber hydraulic booster reduce the impact of input nonlinearity; on the other hand, the input rocker arm of the external feedback dual-chamber hydraulic booster adopts a differential design to compensate for the nonlinearity of the booster relative to the input displacement. Ensure that the output displacement achieves the desired effect.
[0020] The specific implementation of the technical solution of the present i...
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The invention belongs to the field of flight control, and relates to a nonlinear compensation device for a hydraulic booster with double chambers. The nonlinear compensation device for the hydraulic booster with the double chambers is used for nonlinear compensation of a rudder control system, and includes a servo torque tube rocker arm (1), a booster input pull rod (2), a feedback double chambershydraulic booster (3), a hydraulic booster input rocker arm (4), a hydraulic booster output rocker arm (5), a control surface pull rod (6), a outer feedback booster mounting support base (7), a control surface rear beam vertical to a stabilizing plane structure and a control surface (9). By the differential design of the servo torque tube rocker arm, the differential design of the outer feedbackhydraulic booster input rocker arm, and the differential design mode of the hydraulic booster output rocker arm, the nonlinear error of the hydraulic booster with the double chambers can be eliminated, and the bilateral symmetry of skewness of the control surface is guaranteed.
Description
Technical field [0001] The invention relates to the field of flight control, in particular to a dual-cavity hydraulic booster nonlinear compensation device, which is suitable for aircraft with a mechanical booster control system. Background technique [0002] At present, the rudder control system of large and medium-sized aircraft adopting mechanical power assist control system generally adopts dual-pilot and single control line design layout. In order to meet the requirements of safety and stability, its booster usually adopts external feedback dual-cavity Hydraulic booster, such as figure 1 Shown. When the system is working normally, the strokes of the left and right pedals in the cockpit are the same. In order to ensure that the nonlinearity of the system is as small as possible during the movement, the design requires the transmission ratio of the booster to be 1, but as the input displacement of the hydraulic booster increases , The transmission ratio of the booster increas...
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IPC IPC(8): B64C9/00B64C5/06
CPCB64C5/06B64C9/00
Inventor 张领建沈国丽蒲丽娟
Owner 中航通飞华南飞机工业有限公司