A Parallel Supporting Mechanism for Three-DOF Antenna

Abstract

The invention relates to a three degrees of freedom antenna parallel support mechanism. The mechanism comprises a fixed platform, a movable platform and three linear driving branch chains of the same structure connecting the two platforms, wherein one end of each of the first and third linear driving branch chains is connected with the movable platform through a Hooke hinge, the other end thereof is connected with the fixed platform through a revolute pair, one end of the second linear driving branch chain is connected with the movable platform through a revolute pair, and the other end thereof is connected with the fixed platform through a Hooke hinge. Three hinge points of the three linear driving branch chains on the fixed platform are distributed in an isosceles triangle, two revolute pair hinge points connecting the first and three branch chains are on the same plane, the plane is lower than the hinge point of the Hooke hinge connecting the second branch chain, and the three hinge points of the three linear driving branch chains on the movable platform are distributed in the isosceles triangle. The mechanism contains fewer joints of single degree of freedom than the same type of existing mechanisms, has higher structure rigidity, can work in a larger space, can adjust the antenna in two axes in a large range, and has high practicability.

Description

technical field [0001] The invention belongs to the field of robots, in particular to a parallel robot. Background technique [0002] Antenna is a component used to transmit or receive electromagnetic waves. Engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasures, remote sensing, radio astronomy, etc., all rely on antennas to work by using electromagnetic waves to transmit information. In addition, in terms of transmitting energy with electromagnetic waves, non-signal energy radiation also requires antennas. At present, the supporting mechanism of the antenna mainly adopts a series form. The series mechanism has the characteristics of simple structure, easy control, and large working space, but the series mechanism has the problem of small carrying capacity, such as Chinese patents CN201510509218.4, CN201110402407.3, CN201010173348.2 , CN99233206.0 and other institutions proposed. The parallel mechanism has t...

AI Technical Summary

Problems solved by technology

However, the general parallel mechanism has a small working space and cannot meet the requirements of the large adjustment range of the antenna, such as the mechanisms proposed in Chinese patents CN201210314786.5 and CN201010224524.0

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