A Study on the Kinematics of the Model Support System of the Dual-Machine Wind Tunnel Test

In the dual-machine wind tunnel test, the rear machine model support system is an open chain mechanism composed of rigid links in series with rotation and translation functions, and belongs to a multi-rigid body link system. The kinematic analysis of the system is to use the centroid of the posterior model as the end position of the mechanism, and analyze the relationship between the position and posture of the centroid of the model and the space of each joint variable. [1] Therefore, in order to study the motion control system of the model support system and the dual-camera pose simulation, the kinematics analysis of the back-machine model support system is first required. Based on this analysis, a cloud image of the working space of the model support mechanism is established to ensure that it does not collide with the side wall of the wind tunnel. 1 Solution to the kinematic equations of the supporting system The structure of the back machine model support device is shown in Figure 1. The movement mechanism includes: 1) Movement mechanism between the height direction; 2) Yaw mechanism 1, the yaw angle adjustment is realized by the electric cylinder through the rod mechanism; 3) Yaw mechanism 2, the yaw angle adjustment is realized by the electric cylinder through the rod mechanism; 4) Pitch motion mechanism 3, the angle is adjusted by the electric cylinder through the rod mechanism; 5) The horizontal linear adjustment mechanism 4 uses a hydraulic cylinder to adjust the length of the rod through a rod mechanism. The end is the fixed surface of the airplane model, and here is the end of the mechanism in this paper.