scholarly journals Conversion of a New Zealand 30-Metre Telecommunications Antenna into a Radio Telescope

2015 ◽  
Vol 32 ◽  
Author(s):  
Lewis Woodburn ◽  
Tim Natusch ◽  
Stuart Weston ◽  
Peter Thomasson ◽  
Mark Godwin ◽  
...  
Keyword(s):  
Control System ◽  
New Zealand ◽  
Radio Telescope ◽  
Earth Station ◽  
Electrical Components

AbstractThe conversion of a former 100-foot (30-m) telecommunications antenna (Earth Station) in New Zealand into a radio telescope is described. A specification of the antenna and the priorities for its actual conversion are initially presented. In describing the actual conversion, particular emphasis is given to mechanical and electrical components, as well as to the design of the telescope control system, telescope networking for VLBI operations, and telescope maintenance. Plans for RF, front- and back-end developments based upon radio astronomical priorities are outlined.

Design of Electric Control System of Stainless Steel Composite Plate

2013 ◽  
Vol 706-708 ◽  
pp. 716-719
Author(s):  
Jian Chu ◽  
Gang Wang
Keyword(s):  
Stainless Steel ◽  
Control System ◽  
Composite Plate ◽  
Current Control ◽  
Equipment Operation ◽  
Electric Control ◽  
Control Scheme ◽  
Steel Composite ◽  
Machine Interface ◽  
Electrical Components

This paper mainly introduced to the PLC as the core of stainless steel composite plate electric control part of the design. The system uses the converter +PLC+ man-machine interface, as the major part of roll welding machine control, because of the use of the PLC, so that the system can improve the automatic level, electrical components is reduced, reduce failure rate, improve the reliability of equipment operation. Based on the current control and speed control, so that the welding quality and welding speed has been greatly improved. In the article, mainly from the production process, and the control system hardware and software design, and the control scheme to introduce several aspects.

scholarly journals Pulsar Observations at the Ghana Radio Astronomy Observatory

2017 ◽  
Vol 13 (S337) ◽  
pp. 410-411
Author(s):  
T. W. Scragg ◽  
B. W. Stappers ◽  
R. P. Breton ◽  
J. N. Smith ◽  
D. Adomako ◽  
...  
Keyword(s):  
Radio Telescope ◽  
Radio Astronomy ◽  
Astronomy Observatory ◽  
Earth Station ◽  
Radio Astronomy Observatory ◽  
Pulsar Timing ◽  
New Radio ◽  
Timing System

AbstractIn August 2017 a new radio telescope, the Ghana Radio Astronomy Observatory (GRAO), was officially inaugurated at Kuntunse, Ghana. The GRAO is a former satellite Earth station and now the first operational station in the African VLBI Network (AVN). The Jodrell Bank Centre for Astrophysics (JBCA), supported by the UK’s STFC/Newton Fund, has developed a new pulsar timing system (Hebe) for the GRAO. We present some aspects of the design of Hebe and an outline of the first pulsar detection at GRAO.

Development and Application of Driving Devices for Space Environment

2011 ◽  
Vol 474-476 ◽  
pp. 2177-2182
Author(s):  
Jian Wen ◽  
Shu Hui Xu ◽  
Yan Chao Wang ◽  
Tong Fen Liang
Keyword(s):  
Heat Transfer ◽  
Control System ◽  
Temperature Distribution ◽  
Mathematical Models ◽  
Extreme Temperature ◽  
Space Environment ◽  
Stepping Motor ◽  
Space Suit ◽  
Electrical Heater ◽  
Electrical Components

Driving device including mechanical and electrical components has to be protected by special designed shelter to fit the extreme temperature in space environment. A driving device based on stepping motor and gears box and protected by a warm box was developed and tested under simulated space environment. The temperature of the warm box was measured and controlled by electrical heater and paraffin phrase changing. Mathematical models of heat transfer and paraffin phrase changing were established, and temperature distribution of the warm box was simulated by Fluent. Based on the research, a driving device was developed and a control system for temperature in the box and motor motion was also developed. The device was tested under simulated space environment more than 1000 hours, and it was used in EVA space suit experiment successfully.

scholarly journals A Data Acquisition and Control System for a 46-Meter Radio Telescope

1972 ◽  
Vol 84 ◽  
pp. 194
Author(s):  
D. L. Bradt ◽  
L. A. Higgs ◽  
S. G. Jones ◽  
T. G. O'Neill ◽  
J. L. Wolfe
Keyword(s):  
Control System ◽  
Data Acquisition ◽  
Radio Telescope ◽  
And Control

The Decameter Wave Radio Telescope at Gauribidanur: Antenna Arrays and Control System

1989 ◽  
Vol 35 (6) ◽  
pp. 342-348 ◽  
Author(s):  
A A Deshpande ◽  
R K Shevgaonkar ◽  
Ch V Sastry
Keyword(s):  
Control System ◽  
Radio Telescope ◽  
Antenna Arrays ◽  
Wave Radio ◽  
And Control

Control System of Fish Feeding Devices in Actual Pond

2014 ◽  
Vol 554 ◽  
pp. 337-341
Author(s):  
Muhammad Hazwan Bin Md Jamal ◽  
Y.M. Faiz
Keyword(s):  
Control System ◽  
Movement Control ◽  
Food Distribution ◽  
Average Weight ◽  
Fish Food ◽  
Fish Feeding ◽  
Before And After ◽  
Mechanical Components ◽  
Bad Weather ◽  
Electrical Components

The main objective of this project is to identify the development of PLC and movement control system providers to eat in wireless cable. Further the second objective is to develop a conveyor system for delivery of food to the system cable feed providers and the final objective is to develop a PLC system and a wireless control system. Components required in this project can be divided into two groups which are electrical components and mechanical components. For this research, some components are required and divided into two groups which the electrical components and mechanical components. The total average weight of pallet conveyors operate to fall during the first 5 minutes is a 286.67 grams, followed by 10 minutes is a 467.78 grams, 15 minutes is a 665.56 grams, last 20 minutes is a 860 grams and the last 25 minutes is a 964.45 grams. The average an increase was due to the time factor and heavy pallet that fell during the process. Then the average results for each test height of the cable before and after process run is taken and graphs drawn. For test average before the process run at station 1 and station 4 is 0.2371 meters followed by station 2, 3, 5 and station 6 is 0.1863 meters. After that, the test run average after the process for station 1 and station 4 is 1177 meters followed station 2, 3, 5 and station 6 is 1.1269 meters. The graph decrease machine because food distribution heavy and less strong pillars to hold cable the support and supports the machine. To increases graphs was due to the bad weather and weight factors distribution of food machine. In summary, the control system of the fish food provider can be developed even more to advance the fishing industry particular in Malaysia and general in the world.

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