An aircraft autopilot stability reserve test system and method
A technology of automatic driving and test system, applied in the field of flight control system test, can solve the problem of not accurately reflecting the stability reserve of the automatic driving system, and achieve the effect of reducing the impact
Active Publication Date: 2015-09-30
JIANGXI HONGDU AVIATION IND GRP
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the existing inner loop stability reserve test method mainly has the following deficiencies: the inner loop stability reserve test is to apply an excitation signal between the actuator and the aircraft motion simulation system, and this method cannot accurately reflect the stability reserve of the autopilot system; The maximum input voltage of the acquisition board is -10v~10v, and the maximum error is about 0.3v. For example, -10v~10v is required to represent the height signal of 0m~13000m when doing the height maintenance and storage test, and the influence of the error is very large.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0016] Example: see figure 1 .
[0017] An aircraft autopilot stability reserve test system includes an avionics simulator, a flight control computer, an actuator, an aircraft motion simulation system, a frequency response analyzer, and the output signal of the flight control computer is connected to the input end of the actuator; The sensor on the actuator introduces the rudder surface deflection signal into the aircraft motion simulation system; the angle of attack, overload and other signals output by the aircraft motion simulation system are introduced into the flight control computer; the relevant modal signals output by the aircraft motion simulation system are reversed and compared with the reference value. The signal is superimposed and connected to the feedback signal input terminal of the frequency response analyzer, and the reference value is given by the aircraft motion simulation system, which is the relevant modal signal value when the aircraft is in a balance...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to the technical field of flight control system testing, in particular to a system and a method for testing automatic drive stability storage of an aircraft. An excitation signal is superposed on an input signal of an automatic drive system through a frequency response analyzer, the input signal superposed with the excitation signal and an aircraft feedback signal are acquired back to the frequency response analyzer, the amplitude-frequency characteristic and the phase-frequency characteristic of a flight control system are checked through the frequency response analyzer so as to confirm whether the system stability meets the requirement. By utilizing the method, the stability storage of the automatic drive system can be accurately obtained, and the influence of acquisition errors on a test result is reduced by adopting a reference value subtracting method.
Description
technical field [0001] The invention relates to the field of flight control system test technology, in particular to an aircraft automatic driving stability reserve test system and method. Background technique [0002] The flight control system should have appropriate stability reserves to ensure that the flight control system can still work stably when external factors and internal parameters change within a certain range during operation. The stability reserve test can confirm how much phase and amplitude reserve the flight control system has. However, the existing inner loop stability reserve test method mainly has the following deficiencies: the inner loop stability reserve test is to apply an excitation signal between the actuator and the aircraft motion simulation system, and this method cannot accurately reflect the stability reserve of the autopilot system; The maximum input voltage of the acquisition board is -10v~10v, and the maximum error is about 0.3v. For examp...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B64F5/00B64F5/60
Inventor 冷国旗肖成方刘宝文张羽白李玉飞邹俊俊陈林张坤裴登洪
Owner JIANGXI HONGDU AVIATION IND GRP