Multi-constrained online Gauss pseudo spectrum type terminal guidance method

Abstract

The invention relates to a multi-constrained online Gauss pseudo spectrum type terminal guidance method. The multi-constrained online Gauss pseudo spectrum type terminal guidance method comprises the following steps that (1) terminal trajectory optimization is conducted on a nonlinear state equation according to the Gauss pseudo spectrum method; (2) in the same guidance cycle, an optimal control command is introduced into the actual flying process according to the clock maintaining mechanism; (3) in the same guidance cycle, online reconstruction of a guidance command is conducted according to the whole trajectory information of the prior cycle and the current state quantity; (4) in the next guidance cycle, the step (2) and the step (3) are executed repeatedly till an aircraft approaches a target; (5) when the aircraft approaches the target, the target is hit according to the proportional guidance method. According to the multi-constrained online Gauss pseudo spectrum type terminal guidance method, the terminal values of the high-nonlinearity state quantities such as the speed, the attack angle and the attack direction can be controlled, deviation caused by various kinds of interference can be well eliminated during flight, and the optimal control command can be reconstructed rapidly.

Description

technical field [0001] The invention relates to a multi-constraint online Gaussian pseudo-spectrum terminal guidance method, which is applied in the terminal guidance process of hypersonic aircraft and belongs to the technical field of guidance control of aircraft. Background technique [0002] After nearly half a century of development, the terminal guidance technology of conventional aircraft has matured. However, with the development of hypersonic aircraft, especially the urgent need for global strike missions, it is required that the aircraft accurately strike targets at hypersonic speeds while maintaining It is necessary to ensure that the angle, speed and other indicators of the terminal are within a certain range. The control of such indicators can ensure the best damage effect of the aircraft. [0003] Although there are many terminal guidance laws that can ensure that the aircraft hits the target accurately, few guidance laws can guide the aircraft to attack the tar...

AI Technical Summary

Problems solved by technology

[0003] although there are many terminal guidance laws that can ensure that the aircraft can accurately attack the target, few guidance laws can guide the aircraft to attack the target at a specific angle, and even fewer guidance laws can control the terminal angle of attack

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