Intelligent control method for aircraft steering engine electro-hydraulic servo system

Abstract

The invention relates to an intelligent control method for an aircraft steering engine electro-hydraulic servo system, which comprises the steps that an improved artificial bee colony algorithm moduleand a PID controller module form a controller; system error information output by a force sensor and a displacement sensor is obtained in real time by using the improved artificial bee colony algorithm, the fitness is calculated, and an optimal food source is searched to serve as PID controller parameter output; the PID controller module outputs a loading force instruction signal to an electro-hydraulic servo valve by using the system error information output by the force sensor and the displacement sensor and PID controller parameters outputted by the improved artificial bee colony algorithmmodule so as to drive a valve-controlled hydraulic cylinder to move and generate a loading force, the loading force is loaded to an aircraft steering engine via a buffer spring and the force sensor,and the aircraft steering engine carries out corresponding motion according to the loading force instruction signal. The control method effectively improves the loading accuracy, response speed, tracking effect and stability of the aircraft steering engine electro-hydraulic servo system, and realizes effective suppression for the redundant force interference of the system.

Description

technical field [0001] The invention belongs to the technical field of control system simulation, and in particular relates to an intelligent control method for an aircraft steering gear electro-hydraulic servo system. Background technique [0002] The electro-hydraulic servo system of the aircraft steering gear is a device for force-loading the aircraft steering gear to simulate the load condition of the aircraft steering gear during real operation. The system can complete the test of the performance of the aircraft steering gear under laboratory conditions. Compared with the traditional self-destructive experiment, it reduces the experimental cost and shortens the experimental period. figure 1 It is a structural schematic diagram of an electro-hydraulic servo system for aircraft rudders commonly used at present. Such as figure 1 As shown, this electro-hydraulic servo system for aircraft steering gear includes a controller 1, an electro-hydraulic servo valve 2, a valve-co...

AI Technical Summary

Problems solved by technology

The existence of redundant force will not only seriously affect the control performance and tracking effect of the system, but also have adverse effects on many important technical indicators such as loading accuracy, response speed, and anti-interference performance of the system.

[0003] Considering that the traditional PID controller is applied to the nonlinear and time-varying aircraft steering gear electro-hydraulic servo system, but it cannot realize the adaptive adjustment of the controller parameters, and cannot obtain a good real-time control effect

It is also considered that when the PID controller using the artificial bee colony algorithm is used for parameter adjustment, the artificial bee colony algorithm is prone to fall into local optimum and slow convergence speed, which affects the control performance and tracking effect of the system

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