Wind tunnel three-degree-of-freedom model insertion mechanism control system and method

Abstract

The invention provides a wind tunnel three-degree-of-freedom model insertion mechanism control system and a wind tunnel three-degree-of-freedom model insertion mechanism control method. The three degrees of freedom are a vertical Y direction, a horizontal X direction and a pitch alpha direction. Displacement sensors are installed in the Y direction and the X direction of a test model, and an anglesensor is installed in the alpha direction; actuators are installed on three degrees of freedom, and driving elements drive the actuators to implement corresponding motions; the degrees of freedom ofthe test model insertion mechanism in the X direction and the alpha direction and the actuators are placed on a horizontal working platform, and are supported by means of Y-direction degree of freedom; an upper computer sequentially packages normal motion sequences of a current test item by item in a form of a motion sequence, processes the normal motion sequences into a form of instructions which can be identified by a PXI controller, and transmits the instructions to the PXI controller; the PXI controller receives and parses the instructions, forms control instructions corresponding to thedriving elements and transmits the control instructions to the corresponding driving elements, receives feedback information of a PXI multifunctional acquisition board card, and feeds back motion in-place information to the upper computer when the execution of the actuators is in place; and the upper computer and the PXI controller enter a standby state after all the motion sequences are completed.

Description

technical field [0001] The invention relates to a control system for a three-degree-of-freedom model insertion mechanism in a wind tunnel, which is suitable for safe, flexible, fast and accurate positioning of a multi-degree-of-freedom model insertion mechanism in a large hypersonic wind tunnel. Background technique [0002] Wind tunnel test is a common aerodynamic research method. The model insertion mechanism is the carrier for various attitude simulations of the wind tunnel test object. The safe, fast and precise control of the model insertion mechanism is an important part of the wind tunnel test. [0003] At present, the commonly used model insertion mechanisms are mostly single-degree-of-freedom or double-degree-of-freedom motion application environments, and are mostly controlled by industrial computers or PLCs, resulting in a single model posture and poor real-time control, resulting in waste of wind tunnel test resources. [0004] In large-scale hypersonic wind tunn...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used model insertion mechanisms are mostly single-degree-of-freedom or double-degree-of-freedom motion application environments, and are mostly controlled by industrial computers or PLCs, resulting in a single model posture and poor real-time control, resulting in waste of wind tunnel test resources.

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