Aircraft control system ground dynamic characteristic test method

A technology of dynamic characteristics and test methods, applied in the field of aviation test research and development, can solve the problems of not giving test conditions requirements, test method test principles and test data processing, not giving test method requirements, test principles, etc.

Active Publication Date: 2020-08-18
SHAANXI AIRCRAFT CORPORATION
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Problems solved by technology

[0002] Article 8.3 of GJB185-86 "Manned Aircraft (Fixed Wing) Flight Quality" puts forward the requirement of dynamic characteristics to allow control surface lag, and gives the requirements for The step control force input inspired by the pilot, the response requirements of the aircraft; the shortcoming is that the specific and implementable test conditions, test methods, test principles and test data processing are not given.
The shortcoming is that it does not give specific and practicable test conditions, test method requirements, test principles and test data processing, and there is still a distance from the actual engineering application.

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  • Aircraft control system ground dynamic characteristic test method
  • Aircraft control system ground dynamic characteristic test method
  • Aircraft control system ground dynamic characteristic test method

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Embodiment Construction

[0054] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0055] A method for testing the ground dynamic characteristics of an aircraft control system

[0056] 1) Test condition requirements

[0057] The test must meet the following conditions and requirements:

[0058] a) The test must be carried out on a real iron bird test bench 1:1 with the aircraft.

[0059] b) The sensor test system is working normally, the mechanical control system is working normally, the control stability augmentation system is working normally, and the hydraulic system is working normally. Elevator, rudder, and aileron rudder surfaces are all equipped with high-precision angle sensors, and all sensor signals are conditioned by a frequency response analysis system.

[0060]c) A high-precision servo loading system (signal generator), which is powered by a hydraulic source and applies an excitation signal to the system.

[0...

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Abstract

The invention belongs to the field of aviation experiment development, and discloses an aircraft control system ground dynamic characteristic test method, a control system dynamic characteristic testis an important test for evaluating aircraft control system characteristics, and whether the test method is correct or not determines the credibility of test data. From the perspective of engineeringapplication, specific implementable test conditions, test method requirements, test principles and test data processing are provided, and the method has great significance in researching the stabilityand dynamic characteristics of an aircraft control system. Engineering designers can visually know the dynamic characteristics of the system and master dynamic information of the system in time, andthe method is an indispensable analysis and verification means for aircraft development and improvement and remodeling. The method can also be used for carrying out dynamic characteristic research onother systems, and particularly can be used for carrying out frequency response tests on other related systems and carrying out related amplitude-frequency and phase-frequency data analysis to research the dynamic characteristics of the systems.

Description

technical field [0001] The invention belongs to the field of aviation test research and development, and in particular relates to a test method for ground dynamic characteristics of an aircraft control system, a test principle, and a frequency domain data processing method. Background technique [0002] Article 8.3 of GJB185-86 "Flight Quality of Manned Aircraft (Fixed Wing)" puts forward the requirements for the hysteresis of the control surface allowed by the dynamic characteristics, and gives the requirements for the response of the aircraft to the step control force input stimulated by the pilot; The disadvantage is that it does not give specific and practical test conditions, test methods, test principles and test data processing. [0003] "Automatic Control Principles" only introduces the performance index of transient response, and the commonly used graphic representation methods of frequency characteristics, such as Bode diagram representation. The disadvantage is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64F5/60
CPCB64F5/60
Inventor 侯世芳徐坚孙曦张峰杨博文张振环莫斌刘旋
Owner SHAANXI AIRCRAFT CORPORATION
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