Transmission stability optimal design method of vehicle-borne radar radiating surface antenna multi-position rotating feed source turntable
An optimized design and multi-position technology, applied in antennas, electrical components, etc., can solve problems affecting the matching accuracy of structural parts, uneven resistance torque, uneven speed, etc., to improve transmission stability, avoid sudden changes in speed, and reduce resistance moment effect
Inactive Publication Date: 2012-10-17
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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Problems solved by technology
[0004] Sliding friction occurs between the lever of the sheave mechanism and the sheave during mutual movement, and sliding friction occurs between the ejector rod of the cam mechanism and the cam groove. These two frictions cause the structural parts to wear quickly and affect the matching accuracy between the structural parts. , and the non-uniform resistance moment is generated during the movement of the multi-position rotary feed turntable of the vehicle radar, which affects the stability and reliability of the movement of the multi-position rotary feed turntable of the vehicle radar
The speed of the ejector rod of the cam mechanism is not uniform during the up and down movement process, which will produce changing resistance, which will have an adverse effect on the stability of the vehicle radar multi-position rotary feed turntable movement
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[0014] The details and working conditions of the specific device proposed according to the design method will be described in detail below in conjunction with the drawings.
[0015] The feed turntable rotates the sheave (1) through the lever (5), the lever bushing (4) rolls in the groove, the cam (7) groove drives the ejector rod (2) to move up and down, and the ejector rod bushing (6 ) rolls in the cam (7) groove, the cam (7) groove drives the ejector rod (2) to move up and down, and the ejector rod bushing (6) rolls in the cam (7) groove. The cam (7) profile curve is a parabola, see the specific design figure 2 .
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The invention relates to a transmission stability optimal design method of a vehicle-borne radar radiating surface antenna multi-position rotating feed source turntable. A vehicle-borne radar multi-position rotating feed source turntable can realize the gap switching of a feed source through a geneva mechanism, and can realize the feed source location function by driving an ejector rod to enter a location hole through a cam by use of the idle stroke of the geneva mechanism. The transmission stability optimal design method of the feed source turntable is characterized in that sliding friction changes to rolling friction by mounting a liner (4) on a geneva wheel deflector rod (5) and by mounting a liner (6) on the ejector rod (2) driven by the cam; and the cam (7) with the parabolic developed curve can keep the ejector rod (2) moving at a stable speed in the movement process. Accordingly, the design method provided by invention can remarkably improve the transmission stability of the feed source turntable.
Description
A technical field [0001] The design method relates to a transmission stability optimization design method for a multi-position rotating feed turntable of a vehicle-mounted radar radiation surface antenna, which is mainly used for a feed turntable with automatic switching and positioning of vehicle-mounted radar multi-feed sources and time-sharing sharing of reflective surfaces. Two background technology [0002] Due to the different detection methods of vehicle radars in various detection methods, it is generally necessary to use their own independent feed sources. In order to meet the mobility of the vehicle radar, the antenna feed system uses multiple feed sources to share the reflector in time. The vehicle-mounted radar multi-position rotary feed turntable can automatically switch and position each feed in various working modes, so that multiple feeds can be located at the focal point of the antenna reflection surface in time-sharing. [0003] The vehicle-mounted radar m...
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IPC IPC(8): H01Q3/08
Inventor 陈伟张映强
Owner THE 724TH RES INST OF CHINA SHIPBUILDING IND