Control system architecture of QUIJOTE multi-frequency instrument
Control system architecture of QUIJOTE multi-frequency instrument
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QUIJOTE多频仪控制系统架构
DOI：
10.1117/12.926416
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
J. Rubiño
中科院分区：
文献类型：
--
作者：
M. F. Gómez;M. Aguiar;J. Herreros;R. Hoyland;V. Sánchez de la Rosa;A. Vega;T. Viera;R. Génova;C. López;R. Rebolo;J. Rubiño
Quijote-CMB实验已经在以前的出版物中描述过。在这里，我们描述了Quijote I仪器(MFI)控制系统的硬件和软件体系结构。它是一个多通道仪器，有五个独立的偏振器：其中两个工作在10-14 GHz，两个工作在16-20 GHz，一个中心偏振器工作在26-36 GHz。每个旋光仪可以以高达1赫兹的速度旋转，也可以移动到离散的角度位置，从而允许推导出线性极参数Q、U和I。该仪器安装在一个方位角望远镜上，该望远镜实现了几种操作模式：在仰角轴保持固定高度的情况下绕方位轴以恒定速度移动；跟踪天空对象；以及在水平和天空坐标下对矩形区域进行栅格。望远镜和仪器的控制系统基于以下技术：LXI-VXI总线用于信号采集系统；EtherCAT总线实现用TwinCAT开发的软件PLC来执行望远镜的5个偏振器和2个轴的运动。科学信号、5个偏振器的角度位置和望远镜坐标以高达4000赫兹的频率进行采样。所有这些数据都通过从外部GPS时钟获得的时间戳进行关联，该时钟执行精确的时间协议-1588，提供不到1微秒的同步。控制软件还从不同的子系统获取内务(HK)。LabVIEW实现了仪器的用户界面。
The QUIJOTE-CMB experiment has been described in previous publications. Here we describe the architecture of the control system, hardware and software, of the QUIJOTE I instrument (MFI). It is a multi-channel instrument with five separate polarimeters: two of which operate at 10-14 GHz, two of which operate at 16-20 GHz, and a central polarimeter at 26-36 GHz. Each polarimeter can rotate at a speed of up to 1 Hz and also can move to discrete angular positions which allow the linear polar parameters Q, U and I to be derived. The instrument is installed in an alt-azimuth telescope which implements several operational modes: movement around the azimuth axis at a constant velocity while the elevation axis is held at a fixed elevation; tracking of a sky object; and raster of a rectangular area both in horizontal and sky coordinates. The control system of both, telescope and instrument, is based in the following technologies: an LXI-VXI bus is used for the signal acquisition system; an EtherCAT bus implements software PLCs developed in TwinCAT to perform the movement of the 5 polarimeters and the 2 axes of the telescope. Science signal, angular positions of the 5 polarimeters and telescope coordinates are sampled at up to 4000 Hz. All these data are correlated by a time stamp obtained from an external GPS clock implementing the Precise Time Protocol-1588 which provides synchronization to less than 1 microsecond. The control software also acquires housekeeping (HK) from the different subsystems. LabVIEW implements the instrument user interface.
QUIJOTE多频仪的状态
DOI：
10.1117/12.925349
发表时间：
2012
期刊：
--
影响因子：
--
作者：
Hoyland R
通讯作者：
Hoyland R