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Control law design method for civil fly by wire airplane PIO research

A design method and control law technology, applied in the field of flight test, can solve problems such as flight safety cannot be guaranteed, reach the advanced technical level and make up for the technical gap

Active Publication Date: 2019-05-03
CHINESE FLIGHT TEST ESTAB
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  • Claims
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AI Technical Summary

Problems solved by technology

At present, there is no aircraft in China that has a significant trend of pilot-induced oscillation PIO, and the flight safety of this aircraft cannot be guaranteed

Method used

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  • Control law design method for civil fly by wire airplane PIO research
  • Control law design method for civil fly by wire airplane PIO research
  • Control law design method for civil fly by wire airplane PIO research

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] A control law design method for civil fly-by-wire aircraft PIO research is realized based on an air simulation test machine, and the method comprises the following steps:

[0021] Step 1: Select the test state of the pilot-induced oscillation PIO evaluation test, analyze the aerodynamic parameters of the aerial simulation test machine, establish a six-degree-of-freedom full model of the aerial simulation test machine, and obtain the air simulation test machine in this test state The small disturbance linear matrix and quality characteristics, the quality characteristics include longitudinal static stability, short-period modal characteristics, lateral heading static stability, Dutch roll modal characteristics, roll modal characteristics, spiral modal characteristics;

[0022] Step 2: Using the small perturbation linear matrix, short-period modal charac...

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Abstract

The invention provides a control law design method for civil fly by wire airplane PIO research, which belongs to the technical field of flying tests. The method of the invention is realized based on an air stimulation tester. Through analyzing an aerodynamic model and flight quality feature of the air stimulation tester at the test state point, target quality features having different levels in longitudinal and transverse direction can be selected based on Cooper-Harper criterion. A full-state feedback method is adopted to compute the feedback gain matrix of control law. With the adding of a time delay module and a steering engine rate saturation module, a full-quantity model in the air stimulation tester has classic civil fly by wire airplane responding feature and can trigger a driver tostimulate oscillation PIO. The invention is advantageous in that under the premise that flying safety is guaranteed, the oscillation PIO can be triggered by different drivers, test objects can be provided for civil fly by wire airplanes PIO research, and domestic gaps can be filled up.

Description

technical field [0001] The invention relates to a control law design method for civil fly-by-wire aircraft PIO research, which belongs to the field of flight test technology. Background technique [0002] As one of the reflection phenomena of flight quality problems, the pilot-induced oscillation PIO event is accidental and universal, and at the same time, it is seriously harmful to flight safety. The development of civil fly-by-wire aircraft in China started relatively late, and the foundation of pilot-induced oscillation PIO flight test technology is weak. In terms of methods and other aspects, there is a lack of pilot-involved and systematic flight test demonstration verification. Among them, the biggest constraint factor is that there is no test object that can be used for PIO research of civil fly-by-wire aircraft. [0003] In the process of research on the evaluation method of PIO pilot-induced oscillation tendency of civil fly-by-wire aircraft, the test subjects need...

Claims

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Application Information

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IPC IPC(8): B64F5/60
Inventor 尤俊彬张喆王言华艺欣邹泉胡雅晖
Owner CHINESE FLIGHT TEST ESTAB
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