Motion distribution method of main body and separated body decoupling mechanism in linkage trajectory capture experiment

Abstract

The invention discloses a movement distribution method of a decoupling mechanism of a main body and a separated body in a linkage trajectory capture experiment. This method collects the current pose of the separated body model and the main body model at the current moment, obtains the theoretical pose of the separated body model and the main body model at the next time step, and calculates the relative position change distance in the X, Y, and Z directions; compares the separation body The positive and negative stroke margins of the model and the main model in the X, Y, and Z directions respectively, the decoupling mechanism for the planned movement in the X, Y, and Z directions is determined by the larger stroke margin; the main body mechanism and the separation body mechanism are controlled to complete the X, Y , Z-direction motion and their respective angular motions to reach the theoretical poses of the main body model and the separated body model at the next time step. This method can avoid the movement of the main mechanism and the separation body mechanism in the same direction, improve the utilization rate of the experimental space, obtain longer experiment time and more capture trajectory points, and improve the service life of the main body mechanism and the separation body mechanism. The advantages of high efficiency and reliability.

Description

technical field [0001] The invention belongs to the technical field of hypersonic wind tunnel tests, and in particular relates to a motion distribution method of a decoupling mechanism for a main body and a separated body in a linkage trajectory capture experiment. Background technique [0002] At present, research on aircraft, spacecraft, and flying weapons around the world is inseparable from wind tunnel experiments. Wind tunnel experiments are an effective way to analyze the aerodynamic characteristics of objects, study airflow laws, and study the aerodynamic interaction of adjacent aircraft. The wind tunnel experiment reduces the size of the aircraft, creates a stable hypersonic flow field, and obtains the most realistic and reliable aerodynamic data to verify the aerodynamic characteristics of the aircraft. [0003] The current wind tunnel experiments are not satisfied with only obtaining the aerodynamic characteristics of the aircraft in a fixed attitude, but also need...

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Problems solved by technology

Because the main body model and the separation body model are in the same flow field, it is very easy to produce the same direction movement, and the degrees of freedom of the main body and the separation body mechanism are limited, the main body or the separation body mechanism will be in a certain position of the main body model or the separation body model. Stop running when one degree of freedom reaches the limit. Obviously, the utilization of the experimental space is extremely low, and the number of captured trajectory points will be greatly reduced.

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