Near space vertical launching single-channel stability augmentation control method and system

A technology of near-space and control methods, applied in the field of single-channel stability-enhancing control for vertical launch in near-space, can solve problems such as unfavorable aerodynamic characteristics of aircraft configuration, center of gravity, center of pressure configuration, attitude divergence, etc., to achieve improved stability. The effect of reducing difficulty and improving accuracy

Active Publication Date: 2021-05-07
广东空天科技研究院 +1
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  • Application Information

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Problems solved by technology

[0006]However, for any aircraft, there is no possibility of three-channel all-static and stable design at the same time, and it is impossible to configure the center of gravity and the center of pressure at completely accurate positions in engineering impleme

Method used

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  • Near space vertical launching single-channel stability augmentation control method and system
  • Near space vertical launching single-channel stability augmentation control method and system
  • Near space vertical launching single-channel stability augmentation control method and system

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Embodiment

[0062] see figure 1 , which is a single-channel stabilization control method for near-space vertical delivery and launch provided by the embodiment of the present application, such as figure 1 As shown, the method may include:

[0063] S101: Obtain the roll channel torque command and related parameters, the related parameters include the roll air moment under the current flight state, the flight dynamic pressure under the current flight state, the aircraft reference area, the roll channel reference length and the design rudder effect coefficient ; The current flight state is the directional flight state after the flight trajectory inclination of the aircraft exceeds a preset value;

[0064] S102: Calculate and obtain a differential rudder surface control command according to the roll channel torque command and the related parameters, so that the differential rudder generates a rolling moment by executing the differential rudder surface control command to make the aircraft tak...

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Abstract

The invention discloses a near space vertical launching single-channel stability augmentation control method and system. The method comprises the following steps: obtaining a rolling channel torque instruction and related parameters, wherein the related parameters comprise a rolling air torque, a flight pressure, an aircraft reference area, a rolling channel reference length and a design steering coefficient in a current flight state; and obtaining a differential control surface control instruction through calculation, and enabling the differential rudder to generate rolling torque by executing the differential control surface control instruction, and the aircraft flies in the target flight attitude. According to the embodiment of the invention, a pair of small differential control surfaces is added on the rolling channel of the aircraft, the stable flight effect of three channels of the aircraft is achieved only through rolling control, meanwhile, the influence of rapid change of atmospheric density in the process that the height is rapidly reduced after the aircraft is thrown in a near space is overcome, and the flight path can be adjusted in the preset flight vertical plane through a single channel, so that the requirement of a flight test for an airspace range is reduced, and the difficulty of searching and recovering an aircraft is also reduced.

Description

technical field [0001] The present application relates to the technical field of vertical launch in near space, and in particular to a method and system for single-channel stabilization control of vertical launch in near space. Background technique [0002] A flight vehicle is a device that flies in the atmosphere or in the space outside the atmosphere (space). The aircraft is launched into the air by the static buoyancy of the air or the aerodynamic force generated by the relative motion of the air. [0003] The traditional way of launching aircraft mainly includes rocket-assisted launching and aircraft-mounted aerostat-mounted launch. However, each has some defects. There will be extremely strong constraints, and when the aircraft is mounted, the airflow of the external storage will also cause severe interference to the aircraft platform. In this context, aerostat mount launch came into being. The aerostat-mounted launch is to mount the aircraft through the aerostat and...

Claims

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Application Information

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IPC IPC(8): G05D1/08
CPCG05D1/0833
Inventor 李文皓肖歆昕杨磊张陈安刘文张琛
Owner 广东空天科技研究院
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