Dalian heavy industry assembly feed cable drive system for FAST telescope
As a major national science and technology infrastructure projects 500 m diameter spherical radio telescope (FAST) project in Guizhou province is like a raging fire in the construction of the project, recently ushered in a feed -- Dalian heavy industry specifically for the FAST telescope supporting the development of the construction of a new node cable drive system, which allows the receiver in the future astronomical observation cabin success cabin.
Feed cable drive system will be the world's largest eye mount "muscle and nerve", solve problems of science and technology, creating an international precedent.
FAST station in Guizhou Province, Qiannan Pingtang County town, a village of Jinke g called "Tai Wo Taipa natural Karst depressions, diameter of about 500 meters, reflecting surface is about 30 the size of a football field, built next year is likely to become the people to understand the universe and search for life on other planets" rules of the game subversion".
The feed source refers to the equipment system used by the telescope to withstand the international signal. The feed cabin is used to place the system. If you compare FAST with one eye, then it is the feed of the retina, all of the collected signals are collected here are, the cabin is equivalent to the eye of the pupil.
At present, the feed tanks of large radio telescopes in the world are all with rigid support mode, and the weight and size are too large to be an obstacle to the signal capture by the telescope. Dalian heavy FAST telescope specially developed supporting a flexible cable feed drive system, which is currently in the world to build the largest cable driven parallel mechanism with six cable traction, weighing 30 tons of the cabin, in the spherical void diameter 200 meters, 40 meters in height, multi angle, large range and high precision space positioning motion capture electromagnetic signals quickly and flexibly, to achieve accurate tracking of the telescope receiver, this world-class technology for cabin precision mobile installation solid muscle".
This provides the lasso Dalian heavy drive system that uses optical electromechanical integration technology, a collection of more than a dozen professional astronomy, radio, machinery, electrical, communication, measurement and control, with large span and flexible control of high precision, wide speed range, complex process, difficult installation and other technical features. Not only to achieve the cabin light purposes, but also broke through the traditional radio telescope in the source and the reflecting surface relative to the fixed rigid support mode, greatly reducing the size and weight of the feed support structure, reduce the occlusion of the radio telescope, a number of technological breakthroughs of the existing standards and specifications, construction technology to achieve a major breakthrough in the large radio telescope, and became one of the three innovation FAST telescope project. At the same time, as a nerve carrying signal, the lasso drive system also compose feed cabin position control system based on astronomical observation technology, tension, temperature, wind load and natural frequency of the device, so as to send instructions for real-time and high-precision operation of cable driven system.
The successful hatch of the feed cabin is not only an important milestone in the FAST project, but also indicates that the feed support system of FAST project has officially entered the next key stage.
