Two-degree-of-freedom direct-drive scanning and tracking turntable

Abstract

The invention provides a double-freedom-degree direct-driven scanning tracking rotary table, and relates to a scanning tracking rotary table. The rotary table is provided with a base, a supporting base, a lens, a lens clamping base, a pitch motor, a swinging arm, a swinging motor, a pitch approach switch, a swinging approach switch, a swinging touch plate, a pitch touch plate, a pitch hard limit, a swinging supporting frame and a swinging hard limit. The supporting base is fixedly connected with the base, the lens is arranged on the lens clamping base, the lens clamping base is fixedly connected with the swinging supporting frame, the swinging supporting frame is fixedly connected with the upper end of the swinging arm, the pitch motor is fixedly connected with the supporting base, a rotor of the pitch motor penetrates through the supporting base and then is fixedly connected with the swinging arm, an installation plate of the pitch approach switch is fixedly connected with the supporting base, the pitch touch plate is opposite to the pitch approach switch, the pitch touch plate is fixedly connected with the swinging arm, the swinging motor is fixedly connected with the supporting base, a rotor of the swinging motor penetrates through the supporting base to be fixedly connected with the base, the swinging touch plate is fixedly connected with the base, the swinging touch plate is opposite to the swinging approach switch, a driver of the pitch motor and a driver of the swinging motor are fixedly connected with the supporting base, the pitch hard limit is arranged on the swinging arm, and the swinging hard limit is arranged on the supporting base.

Description

technical field [0001] The invention belongs to the technical field of multi-band infrared object tracking and detection, and relates to a scanning and tracking turntable, in particular to a dual-degree-of-freedom direct-drive scanning and tracking turntable. Background technique [0002] Dual-degree-of-freedom turntables are often used in all walks of life, such as machine tool walking in civilian applications; in the military field, they are often used to simulate the spatial distribution of detection targets or the target search of the detector itself in space (Chang Jinbiao. Infrared thermal Research on the Design of Image Source 2D Turntable [D]. Nanjing University of Science and Technology, 2013). Infrared guidance is an important guidance method for precision guided weapons. Especially as the servo mechanism of the infrared guidance seeker (Jin Pengfei. Infrared seeker tracker design [D]. Xidian University, 2007), the performance of the two-degree-of-freedom turntabl...

AI Technical Summary

Problems solved by technology

At present, the two-degree-of-freedom turntable used for infrared tracking mainly uses two kinds of motors for motion control: for example, the patent application number 200410080341.0 provides a two-degree-of-freedom platform, the motor used is a stepping motor, but the stepping motor has noise Large, discrete action points, large return gap error, poor dynamic performance and other shortcomings, can not meet the requirements of precise control; the other is the torque motor (Ai Min. Structural analysis and dynamic simulation of two-dimensional turntable [D]. Changchun University of Science and Technology , 2011), although it can obtain better dynamic characteristics and precision, it needs an external gear reduction mechanism, which is bulky and slightly bulky compared to stepping motors

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