Re-commissioning the Student Radio Telescope Michelle Ho Dr. Christopher Groppi.
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Transcript of Re-commissioning the Student Radio Telescope Michelle Ho Dr. Christopher Groppi.
Re-commissioning Re-commissioning the Student Radio the Student Radio
TelescopeTelescope
Michelle HoMichelle Ho
Dr. Christopher GroppiDr. Christopher Groppi
Radio Telescope Radio Telescope -Rotate along altitude and azimuth angle-Two sets of motors for accurate control. -Limitation of rotation
http://www.adlerplanetarium.org/cyberspace/history/tools/coordinate.html
Programming SoftwareProgramming Software
► LabviewLabview User interface for User interface for
desired telescope desired telescope movements. movements.
Should include Should include coordinate system of coordinate system of celestial options. celestial options.
Easily control Easily control movements – movements – amount, direction, amount, direction, velocity, etc. velocity, etc.
Motor movement vs. Motor movement vs. telescope telescope movement.movement.
►QuickControlQuickControl Software program Software program
for Silvermax 34H for Silvermax 34H motors. motors.
Basic functions – Basic functions – control simple control simple movements. movements.
Data/Register Data/Register MonitorMonitor
Motor Specific Motor Specific Commands.Commands.
Basic Write/ReadBasic Write/Read
►Serial communicationSerial communication Enabling/Disabling Write and Read Enabling/Disabling Write and Read
functions. functions. Individual commands sent once. Individual commands sent once. Correct setup of “Motor Settings” for Correct setup of “Motor Settings” for
communication. communication. Automatic formation of the command Automatic formation of the command
strings based on user inputs. strings based on user inputs.
Labview InterfaceLabview Interface
QuickControl InterfaceQuickControl Interface
Gear Ratio and ConversionsGear Ratio and Conversions►Conversion of Conversion of
encoder position encoder position units for x units for x degrees of degrees of movement. movement.
►Automatic Automatic encryption of encryption of gear ratio gear ratio factors into factors into motor motor commandscommands
Reading Encoder PositionReading Encoder Position
►Position value ranges from -Position value ranges from -2147483648-2147483647.2147483648-2147483647. Clockwise vs. Counterclockwise, large Clockwise vs. Counterclockwise, large
range of values.range of values.
►Power Disconnection Power Disconnection Lost of data. Lost of data. Encoder Position: ZeroEncoder Position: Zero
CalibrationCalibration
►Transfer of Data from Transfer of Data from Volatile to Nonvolatile Volatile to Nonvolatile Memory. Memory. Distinguishing necessary Distinguishing necessary
commands.commands.
►User input of Desired User input of Desired PositionPosition Run time error with Run time error with
command array and command array and automated process.automated process.
Future DirectionsFuture Directions
►Continuous update of telescope motor Continuous update of telescope motor movements in real-time. movements in real-time. Continuous tracking of celestial objects Continuous tracking of celestial objects
relative to Earth’s movements.relative to Earth’s movements.
►Embedded catalog system of celestial Embedded catalog system of celestial objects’ coordinate system.objects’ coordinate system.