Nonsingular rolling command generating algorithm for BTT guided missile

An instruction generation, non-singular technology, applied in the direction of self-propelled missiles, projectiles, offensive equipment, etc., can solve the problems of affecting the stability of the missile, the adjustment of the lifting surface, and the loss of control of the missile. It is easy to implement, simple to calculate, and avoid singularity. effect of the phenomenon

Active Publication Date: 2018-11-13
SHANGHAI AEROSPACE CONTROL TECH INST
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  • Abstract
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AI Technical Summary

Problems solved by technology

This phenomenon will lead to the disorder of the adjustment of the lift surface, the loss of control of the missile, and seriously affec

Method used

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  • Nonsingular rolling command generating algorithm for BTT guided missile
  • Nonsingular rolling command generating algorithm for BTT guided missile
  • Nonsingular rolling command generating algorithm for BTT guided missile

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Embodiment Construction

[0015] The flow of a non-singular roll command generation algorithm for BTT missiles in the embodiment of the present invention is shown in Figure 1.

[0016] S1 calculates the normal and lateral overload command N y , N z , the calculation method is given by the designed guidance and control system; the expression is

[0017]

[0018] Where χ is the roll angle (the angle between the lift surface and the horizontal plane) instruction, N y ’ is the normal overload after dead zone treatment, N z ' is the lateral overload after hysteresis treatment.

[0019] S2 determines the form and width of the dead zone, the form of the dead zone is as follows figure 2 As shown in , where the x-axis represents the input of the overload command, the y-axis represents the output of the overload command, [-z, z] is the dead zone, and the size of z depends on the needs of the project, generally around 0.05. The mathematical description of the dead zone is

[0020]

[0021] Then use t...

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Abstract

The invention discloses a nonsingular rolling command generating algorithm for a BTT guided missile. The nonsingular rolling command generating algorithm comprises the steps that (1) a normal overloadcommand and a side direction overload command are calculated; (2) a dead zone is designed nearby the zero value for the normal overload command; (3) a hysteresis zone is designed nearby the zero value for the side direction overload command; and (4) a rolling angle command is calculated according to the normal overload command and the side direction overload command obtained in the step (2) and the step (3). According to the algorithm, the dead zone is designed for the normal overload command, the hysteresis zone is designed for the side direction overload command, the rolling command is calculated according to the processed overload commands, and control disorders caused by sign mutation of the rolling angle command due to pneumatic interference is avoided.

Description

technical field [0001] The invention relates to a non-singular roll instruction generation algorithm for BTT missiles. The main application field is the generation of roll instructions for tactical weapons controlled by BTT, and a special nonlinear region is designed near zero for pitch and yaw overload instructions. Background technique [0002] The characteristic of BTT (Bank-To-Turn) control is that in the process of intercepting the target, the missile quickly turns the maximum lift surface of the missile to the ideal maneuvering direction through rolling control, and the pitch control system controls the missile at the maximum lift. Generate the required maneuvering acceleration in the plane. BTT control is generally carried out in polar coordinates, and there are two general processing methods, one is to calculate in the rectangular coordinate system first, and then transfer to the polar coordinate system; the second is to directly perform in the polar coordinate syste...

Claims

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Application Information

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IPC IPC(8): F42B15/01
CPCF42B15/01
Inventor 奚勇陈光山彭继平冯昊廖幻年王璐田野
Owner SHANGHAI AEROSPACE CONTROL TECH INST
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