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Three-degrees-of-freedom test platform

A test platform and degree-of-freedom technology, used in environmental/reliability testing, measuring electricity, measuring devices, etc., can solve problems such as affecting the accuracy of antenna performance testing

Active Publication Date: 2016-05-04
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This greatly affects the accuracy of the antenna performance test

Method used

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  • Three-degrees-of-freedom test platform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] refer to figure 1 and figure 2 , the three-degree-of-freedom test platform includes the bottom support (1); the direction rotation device (2); the forward electric cylinder mechanism (3); the roll electric cylinder mechanism (4); the top platform (5); the support device (6) ; Control box (7) and sensor limit system (8). It is characterized in that: the direction rotation device (2) is fixedly installed in a bottom support (13) of the bottom support (1), the support device (6) has a lower turntable (65) and the direction rotation device (2) connection, install the forward electric cylinder mechanism (3) and the roll electric cylinder mechanism (4) on the lower turntable (65), and the top hinges of the forward electric cylinder mechanism (3) and the roll electric cylinder mechanism (4) The top platform (5) is fixedly connected to the control box (7) next to the base (1); the direction rotation device (2), the forward electric cylinder mechanism (3) and the roll electri...

Embodiment 2

[0022] refer to figure 1 and figure 2 , the three-degree-of-freedom test platform is characterized in that: the left side of the bottom frame (13) in the bottom support (1) is connected to the control box (7) through bolts, and the plane plate on the bottom support (1) ( 14) The lower part of the slewing support (145) is connected by bolts; the upper part of the slewing support (14) is connected with the lower turntable (65) by bolts; the gear coupling (27) in the direction transmission device (2) is connected with The lower turntable (65) is connected by bolts, and the reducer fixing seat (25) in the direction transmission device (2) is connected with the bottom frame (13) by bolts; The bearing (35) is connected with the lower turntable (65) by bolts, and the upper fisheye bearing is connected with the long cross bar (54) in the top platform (5); The spherical bearing (44) is connected to the lower turntable (65) by bolts, and the upper fisheye bearing is connected to the ...

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Abstract

The invention provides a three-degrees-of-freedom test platform used for simulating rolling and pitching of an antenna carrier. The test platform comprises a bottom pedestal, a directional rotating device, a forward-tilting cylinder mechanism, a side-tilting cylinder mechanism, a top platform, a supporting device and a control box. The directional rotating device is fixedly mounted inside a bottom frame of the bottom pedestal. The supporting device is provided with a lower turntable which is connected with the directional rotating device. The forward-tilting cylinder mechanism and the side-tilting cylinder mechanism are mounted on the lower turntable. The top ends of the forward-tilting cylinder mechanism and the side-tilting cylinder mechanism are hinged to the top platform. The control box is fixedly connected beside the bottom pedestal. The directional rotating device, the forward-tilting cylinder mechanism and the side-tilting cylinder mechanism are each equipped with a servo electric cylinder for driving the corresponding part to move, so that rotating motion, forward-tilting motion and side-tilting motion of an upper platform of the top platform are realized. The test platform can do periodic motion in one direction and do periodic motion in three directions at the same time, and can well simulate rolling and pitching of an antenna carrier to realize antenna directivity test.

Description

technical field [0001] The invention relates to a three-degree-of-freedom test platform, which can simulate the roll of a carrier (such as a ship, the top of a tall building, etc.), and detect the influence of the roll of the carrier on the antenna pointing performance. The invention belongs to the field of antenna pointing performance testing. technical background [0002] In recent years, my country's satellite technology has made great progress, communication technology has become more and more mature, and antennas are used in more and more applications. An incorrect pointing of the antenna will cause the antenna to receive a very weak signal, sometimes even no signal, so the antenna pointing is an important factor affecting the signal received by the antenna. A smart antenna has now been invented that keeps pointing at the target satellite. However, the antenna pointing performance needs to be tested before it is put into use in a specific environment. At present, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/003
Inventor 王志明华明亚王超唐前严艺辉刘俊清
Owner SHANGHAI UNIV
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