Antenna structure system based on 3-RPRRR two-to-one moving type parallel mechanism

Abstract

The invention relates to an antenna structure system based on a 3-RPRRR two-to-one moving type parallel mechanism. The antenna structure system is composed of a reflector and an antenna base, the antenna base is formed by three servo motors or hydraulic cylinders which drive three linear telescopic driving devices respectively, and the upper ends and the lower ends of the three linear telescopic driving devices are connected with an upper platform and a lower platform through a revolute pair and three series-connection revolute pairs respectively. Each linear telescopic driving device is connected with a rotating pair connected with the lower end of the linear telescopic driving device and three revolute pairs connected in series and connected with the upper end of the linear telescopic driving device to form a branch chain. The upper platform and the lower platform are equilateral triangles and are consistent in position. The three branch chains are respectively connected with vertexangles of the upper equilateral triangle and the lower equilateral triangle, and the antenna structure system is characterized in that axes of revolute pairs at the lower ends of the three branch chains are coplanar, namely, a 'coplanar' geometrical relationship is formed, and the antenna structure system based on the 3-RPRRR two-to-one moving type parallel mechanism is formed. The technical problem of 'over-the-top' continuous tracking of the antenna is solved, and -5-degree pitch angle super-hemisphere airspace continuous tracking is realized.

Description

[0001] Technical field [0002] The invention relates to an antenna structure system based on a 3-RPRRR two-turn-one-shift parallel mechanism. Antenna structure system for aerospace remote sensing, satellite "three remote" technology (remote sensing, telemetry, remote control technology) and satellite communication. The antenna structure system, the servo control system, and the feeder and feeder system (referred to as: sky, servo, and feed) form an antenna system to realize remote sensing, telemetry, and remote control information acquisition and instructions, and to realize satellite communication information transmission and processing. In particular, it can obtain telemetry signals and data in the effective airspace of satellites, launch vehicles and other aircraft, realize continuous tracking of satellite launch vehicles and other aircraft without overhead "blind spots", and successfully solve the continuous tracking in the working airspace of the antenna hemisphere, that i...

AI Technical Summary

Problems solved by technology

[0006] The traditional classic remote sensing and telemetry low-orbit satellite antenna design uses the elevation-azimuth (EL-AZ type) antenna seat, which has an overhead "blind cone area", and the elevation-azimuth antenna cannot be placed in the airspace of the satellite's overhead "blind cone area". Continuously track satellites to meet the needs of uninterrupted and continuous signal work

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