Transmission Accuracy of a New Precise Heliostat Tracking Machine

doi:10.7652/xjtuxb201401022

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Transmission Accuracy of a New Precise Heliostat Tracking Machine

更新时间：2025-07-09

- Transmission Accuracy of a New Precise Heliostat Tracking Machine
- Vol. 48, Issue 1, Pages: 127-132(2014)
- 作者机构：
  
  重庆大学机械传动国家重点实验室,重庆,400044
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201401022
  CLC： TH132.4
- Online First：10 January 2014，
  
  Published：2014
- 稿件说明：
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Transmission Accuracy of a New Precise Heliostat Tracking Machine[J]. 2014, 48(1): 127-132.
DOI：

Transmission Accuracy of a New Precise Heliostat Tracking Machine[J]. 2014, 48(1): 127-132. DOI： 10.7652/xjtuxb201401022.

摘要

针对塔式太阳能发电系统中定日镜跟踪精度低、累积误差大等缺点

研制了一种含可调侧隙变厚齿轮传动副和双蜗轮精密传动装置两项发明专利的新型定日镜精密跟踪机构。采用几何学方法建立了该跟踪机构系统传动误差的耦合模型

运用蒙特卡罗法计算出高度角跟踪机构在随机采样和极限偏差下的传动精度范围

对比不同单次采样计算结果

发现误差值的随机性和误差初始相位间的耦合关系不同时系统传动误差有明显差异。利用高精度角度测量仪对样机系统传动误差进行测试

测试结果表明

系统传动误差处于模拟计算结果的有效区间内

可控制在100″内

因此能够满足定日镜跟踪机构传动系统传动精度在0.5 m/rad内的要求。

Abstract

Heliostat transmission system has low tracking accuracy and high accumulated error in the tower power generation system. A precise heliostat tracking machine is proposed

which includes independently developed backlash adjustable gears with variable tooth thickness transmission pair and dual gear precision transmission device. A coupling model of transmission error of height angle tracking mechanism is deduced geometrically. The distributing range of system transmission error is calculated with Monte-Carlo method by random sampling and extreme deviation. While the error randomness differs from the coupling relationship of error initial phases

the system transmission error is obviously distinct by contrasting different single sample results. The experiments of transmission error are conducted by high accuracy angle measuring instrument and the results fall in the effective range of simulations. The system transmission error can be controlled bellow 100″ to ensure the transmission error of heliostat transmission system to get less than 0.5 m/rad.

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references

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