Intelligent Control Method of Electro-hydraulic Servo System of Aircraft Steering Gear

Abstract

An intelligent control method for an aircraft steering gear electro-hydraulic servo system. It includes a controller composed of an improved artificial bee colony algorithm module and a PID controller module; the improved artificial bee colony algorithm module is used to obtain the system error information output by the force sensor and the displacement sensor in real time, calculate the fitness, and find the optimal food source as a PID control The PID controller module uses the system error information output by the force and displacement sensor and the PID controller parameters output by the improved artificial bee colony algorithm module to output the loading force command signal to the electro-hydraulic servo valve to drive the valve-controlled hydraulic cylinder. A loading force is generated, which is loaded onto the steering gear of the aircraft through the buffer spring and the force sensor, and the steering gear of the aircraft performs corresponding movements and other steps according to the loading force command signal. The control method of the invention effectively improves the loading accuracy, response speed, tracking effect and stability of the electro-hydraulic servo system of the aircraft steering gear, and realizes effective suppression of system redundant force interference.

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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