Sling-type low-gravity simulation tension control buffer mechanism and adjustment method

Abstract

The invention relates to a sling-type low-gravity simulation tension control buffer mechanism and an adjustment method, wherein one end of a swing rod is connected with an axle center of a balance wheel and the other end of the swing rod is connected with an axle center of a winding drum; one end of a sling is wound on the winding drum and the other end of the sling passes through a wheel groove of the balance wheel to be connected with a work piece, of which the tension needs to be controlled; the winding drum and a motor shaft of a torque motor are coaxially installed and the balance wheel can swing around the motor shaft; the radius of the balance wheel is the same with that of the winding drum; a section, between a line outlet point on the winding drum and a line inlet point on the balance wheel, of the sling is parallel to the axis of the balance wheel; a hinge point on the swing rod is connected with one end of a steel wire rope and the other end of the steel wire rope passes through a rope sheave located above the swing rod to be connected with one end of a tension spring; the other end of the tension spring and the lower end of a rope sheave upper seat are separately connected with a support seat; and the rope sheave is installed on the upper end of the rope sheave upper seat. The suspension-type low-gravity simulation tension control buffer mechanism and the adjustment method of the invention are an important part of a constant tension control subsystem and can be used to obtain low equivalent stiffness near a large tension working point in a large range of buffering movement.

Description

technical field [0001] The invention relates to a tension simulation mechanism of an aerospace mechanism low-gravity experiment system, in particular to an active tension control buffer mechanism and an adjustment method for realizing high-precision sling-type low-gravity simulation using a swing rod spring mechanism. Background technique [0002] The working conditions and various technical indicators of space manipulators, planetary exploration vehicles and other devices need to be evaluated in the ground environment during the research and development process. In order to simulate the gravity environment in which the agency will actually work in the future, a low-gravity simulation experiment system is required. In the gravity environment of the earth, the basic working principle of the simulation system is to provide the required constant pulling force through the sling that is always parallel to the direction of gravity to offset the difference between the gravity of the...

AI Technical Summary

Problems solved by technology

However, due to the generally long sling, affected by its flexibility and distribution parameters, it is difficult to increase the bandwidth of the control system; and in terms of control requirements, the elastic coefficient of the sling itself is very large, and the length of the millimeter order Stretching or shortening can cause changes in tension of hundreds of Newtons, so the control system is required to respond quickly and have a high bandwidth.

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