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Rotary table rotation angle coding system capable of rotating for multiple circles

A technology of rotation angle and coding system, applied in radio wave measurement system, conversion sensor output, measurement device and other directions, can solve the problem of low coding accuracy, and achieve the effect of improving positioning accuracy and multi-turn high-precision coding

Pending Publication Date: 2021-08-17
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a system that can realize the precise encoding of the rotation angle within the double-turn range of the turntable, so as to overcome the problem of low encoding accuracy existing in the prior art

Method used

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  • Rotary table rotation angle coding system capable of rotating for multiple circles
  • Rotary table rotation angle coding system capable of rotating for multiple circles
  • Rotary table rotation angle coding system capable of rotating for multiple circles

Examples

Experimental program
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Embodiment 1

[0024] Such as figure 1 As shown, this embodiment provides a turntable rotation angle encoding system capable of multi-turn rotation, including a single-turn absolute encoder 3 coaxial with the turntable (not shown) and a limiter that limits the turntable within the double-turn range. A position mechanism 1, the limit mechanism 1 is provided with a state switch 2, and when the turntable is in the first turn and the second turn, the state switch 2 outputs a low-level signal and a high-level signal respectively.

[0025] This embodiment uses a single-turn absolute encoder to record the rotation angle of the turntable with high precision, and determines the number of turns of the turntable through the output signal of the state switch 2, thereby accurately determining the rotation angle of the turntable to meet the use requirements of the turntable , to facilitate the positioning of the radar direction fixed on the turntable.

[0026] In this embodiment, the single-turn absolute...

Embodiment 2

[0039] refer to Figure 4 , in this implementation, the state switch 2 is a paddle, the state switch 2 is arranged along the radial direction of the turntable and is at the 0 position point of the turntable, and the state switch 2 can fluctuate during the rotation of the collision block 5; before starting work , calibrate the initial position and angle of the turntable, and then make the turntable rotate, record the number and direction after the impact block 5 fluctuates state switch 2, and combine the value of the single-turn absolute encoder 3 to determine the number of turns and the rotation angle of the turntable ; The state switch 2 can only record whether it is toggled, or it can record whether the toggle occurs and the direction of the toggle at the same time, and the angle is recorded by the single-turn absolute encoder 3, and the state switch 2 records the number of turns, so as to realize multiple Circle high precision coding.

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Abstract

The invention provides a rotary table rotation angle encoding system capable of rotating in multiple circles. The rotary table rotation angle encoding system comprises a single-circle absolute encoder coaxial with a rotary table and used for measuring the rotation angle of the rotary table and a state switch for recording the number of current rotation circles of the rotary table. The system has the advantages that the rotation angle is obtained through the single-circle absolute encoder, the number of rotation circles is obtained through the state switch, multi-circle high-precision encoding is achieved, and the positioning precision of the radar direction is improved.

Description

technical field [0001] The invention relates to the technical field of calibration of the rotation angle of a turntable, in particular to a rotation angle encoding system capable of multi-turn rotation of a turntable. Background technique [0002] The turntable is an important part of the radar. Some turntables need to realize the multi-turn continuous rotation function, while some turntables need to rotate within a limited angle range. For example, the invention patent application with the publication number CN110630862A discloses a rotation angle range of 0~±360° The electromechanical limit mechanism of the turntable; the turntable can rotate within a range close to double circles. When determining the rotation angle, the existing turntable generally adopts the scaling method based on double-sided gears to realize the absolute code measurement of the turntable angle, but due to the existence of Backlash, the accuracy is generally at the angular level, which cannot meet hig...

Claims

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Application Information

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IPC IPC(8): G01D5/249G01S7/02
CPCG01D5/2497G01S7/02
Inventor 何张强张腊梅李旺徐非骏宗克诚李俊英林松吴后平周杨朱伟林桑青华魏思源
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST