Automatic steering engine of low-speed wind tunnel force test model

Abstract

The invention discloses an automatic steering engine of a low-speed wind tunnel test model. The automatic steering engine of the low-speed wind tunnel test model comprises an elevator steering engine, a rudder steering engine and a control system, wherein the elevator steering engine is fixed in a vertical fin stabilizing plane, the rudder steering engine is fixed in a fuselage tail section, and driving motors, a lever, a connecting rod, a fixing support, encoders, a driving rod and rotating shafts are arranged; a servo control technology based on a controller area network (CAN) bus is applied to the control system, an upper computer communicates with a servo control unit through a CAN bus adapter, and the servo control unit is connected with the CAN bus. Functions of initialization, parameter setting, state feedback, controlling and the like on each servo unit can be achieved. According to the automatic steering engine of the low-speed wind tunnel test model, automatic accurate angle changing of an elevator and a rudder of the test model can be achieved in the process of a wind tunnel test by the aid of micro electro mechanical and automatic control technologies, labor intensity of test staff can be reduced, positioning errors caused by manual angle changing can be avoided, and the test efficiency of automatic angle changing is 40% higher than that of manual angle changing.

Description

Technical field [0001] The invention relates to an automatic angle-changing system for a model rudder surface in a wind tunnel test, in particular to a low-speed wind tunnel force test model auto steering gear. Background technique [0002] In the wind tunnel test, the combination of the deflection angle of each rudder surface is used to simulate the various states of the aircraft in flight. The deflection angle of the aircraft rudder surface has to undergo multiple repeated transformations. When conducting wind tunnel tests in low-speed wind tunnels, the deflection of the rudder surface or wing surface of the model is done manually. The problem with manual operation is that it is difficult to ensure the repeatability of the positioning accuracy of the rudder surface angle, which affects the data quality, and at the same time brings low test efficiency and high labor intensity. The steering gear required by the wind tunnel test model has the characteristics of small size, large ...

AI Technical Summary

Problems solved by technology

The problem caused by manual operation is that it is difficult to ensure the repeatability positioning accuracy of the rudder surface angle, which affects the data quality, and at the same time brings low test efficiency and high labor intensity

The steering gear required for the wind tunnel test model has the characteristics of small size, large output torque, and high positioning accuracy. Currently, there is no finished steering gear on the market that can meet the requirements of low-speed wind tunnel tests.

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