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.