Wind tunnel flexible wall linkage control system and method

Abstract

The invention belongs to the technical field of wind tunnels and discloses a wind tunnel flexible wall linkage control system and a method. The wind tunnel flexible wall linkage control system is provided with a first two-position three-way electromagnetic valve and a second two-position three-way electromagnetic valve; and the two two-position three-way electromagnetic valves are correspondinglyarranged on oil channels of a rod-provided chamber and a rod-free chamber of a No.1 oil cylinder and are both connected between a three-position four-way electromagnetic reversing valve and a one-waythrottling speed regulating valve of each oil way. The wind tunnel flexible wall linkage control system disclosed by the invention solves the debugging problems, eliminates the phenomenon of blocking,improves the running working conditions of the system, also effectively improves the safety and reliability of running of key equipment and simultaneously further improves the functions of the system; a flexible wall is also subjected to follow-up control in a linkage control process; the two types of control are organically combined to meet different requirements under various working conditionsof a wind tunnel test, equipment maintenance and overhauling and the like; and moreover, the design and successful application of a linkage coordination control system play a certain reference significance for future schematic designs under similar working conditions.

Description

technical field [0001] The invention belongs to the technical field of wind tunnels, and in particular relates to a wind tunnel soft-wall linkage control system and method. . Background technique [0002] At present, the commonly used existing technology in the industry is as follows: wind tunnel is a kind of pipeline-shaped tunnel that can artificially generate and control airflow to simulate the flow of air around aircraft or objects, and can measure the effect of airflow on objects and observe physical phenomena. Experimental equipment, it is the most commonly used and most effective tool for aerodynamic experiments. A wind tunnel is mainly composed of a tunnel body, a drive system and a measurement control system, and the forms of each part vary according to the type of wind tunnel. The soft-wall adaptive wind tunnel opens up a new way to eliminate the interference of the tunnel wall, abandons the huge resident chamber and auxiliary air extraction system, avoids the in...

AI Technical Summary

Problems solved by technology

[0004] (1) In the existing wind tunnel soft-wall linkage control system, follow-up is not considered, and the control only considers linkage. The working condition of a single node is easily ignored, which often causes equipment jamming and wear, which seriously affects the soft-wall nozzle. normal work

[0005] (2) In the existing flexible wall linkage control system of the wind tunnel, the flexible wall inlet chute is stuck during the forming and returning to zero process, which causes abnormal noise at the soft wall inlet chute and changes the overall Load distribution, worsening the operating conditions of other nodes, if it runs for a long time, it may damage the structural parts of the entrance section

Due to the complexity of different working conditions, it is difficult and time-consuming to eliminate the jamming phenomenon by debugging the throttling valve of the branch, and it is difficult to guarantee the effect

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