Multi-constraint dual-channel control method for supersonic large maneuvering target

Abstract

The invention provides a multi-constraint double-channel control method for a supersonic speed large maneuvering target, and aims to provide a large maneuvering target which is limited in working condition of an engine and cannot meet the requirement of the rudder using amount for simultaneously controlling pitching and rolling channels during continuous large overload maneuvering at the same time due to aileron rudder deflection. The invention discloses a dual-channel control method in a flight mission process. According to the method, firstly, a flight task is divided into four stages, namely a climbing stage, a fixed-height level flight stage, a maneuvering stage and a descending stage, then control methods are designed for a pitching channel, a rolling channel and engine control of the large maneuvering target according to the requirements of the flight tasks in different stages for control, and especially for the stage where an engine needs to work normally, the control method is designed for controlling the pitching channel and the rolling channel of the large maneuvering target. According to the method, an engine is ensured to have normal working conditions by setting amplitude limiting, a time-sharing control strategy is designed for solving the problem that the aileron rudder amount cannot meet the requirement during large maneuver, and it is ensured that indexes meet the requirement and the aileron rudder amount meets the use requirement in the large maneuver process.

Description

technical field [0001] The invention relates to a dual-channel target control method, in particular to a large maneuvering target of a liquid rocket engine that cannot work normally due to a normal negative overload. During the flight, the dual-channel control strategy is reasonably designed, and the target can be controlled under multiple constraints. Realize the control requirements of different phases of flight missions. Background technique [0002] Skylark large maneuvering target is a high-performance target jointly developed by Northwestern Polytechnical University and Xi'an Aerospace Propulsion Research Institute. The finalization of my country's weapon system and the daily training of pilots provide high-performance air targets that can realistically simulate fourth- and fifth-generation aircraft in terms of motion characteristics. In order to achieve the ability to simulate the supersonic cruise and maneuvering flight of the fourth-generation fighter, the aero-engi...

AI Technical Summary

Problems solved by technology

[0003] However, in order to reduce the cost in the design of the liquid rocket engine, the engine does not use a propellant management device, which causes the engine to work normally only when the normal overload is positive. Fuel cannot be supplied normally resulting in failure to produce thrust

The aileron of the target needs to control both the pitch channel and the roll channel. However, the upper limit of the rudder deflection of the aileron is only 20°, and the rudder effect of the pitch and roll is not high enough, which causes the target to continue to be overloaded in the horizontal plane. When maneuvering, simultaneously controlling the pitch channel to track a large overload and the roll channel to track a large roll angle puts a lot of pressure on the aileron rudder

Images