Pan Tilt Antenna Controller Midterm Progress Report

1
Pan Tilt Antenna ControllerMidterm Progress
Report

• Group Number E8
• Project Sponsor Calit2
• Course Advisor Jan Kleissl
• Project Advisors Daniel
• Team Members Miguel
• Cory

2
Pan Tilt Antenna ControllerProject Definition
and Objectives

• Background
• Students have designed the Pan Tilt Antenna
  Controller to remotely rotate and tilt a
  directional antenna that will be mounted atop a
  35 foot antenna mast.
• Currently, control of the device is limited to
  basic on/off commands using a simple servo
  controller and GUI.
• Objectives
• Employ GPS input with extremum seeking to create
  a more adaptable controller for the fine tuning
  of signal strength or accommodation for the
  movement of signal sources.

3
Theoretical Methods
Initial Model Testing and Tuning A
continuous-time simulation using
Simulink. Two-Dimensional Expansion Allow for
the pan and tilt motions. Discretization Transf
orm to discrete-time with Z-transforms. Control
Algorithm Difference equations from the
discrete system
4
Experimental Methods
Implementation of Control Algorithm Compile C
program Input/Output Processing Configure
serial inputs and PWM outputs. Initial Position
Algorithm Integrate GPS points of 2
antennas. Prototype Circuit Board Microcontroll
er chip, I/O connections, power
circuitry. Preliminary Functionality
Testing Constant circular motion of antenna
controller via a simplified algorithm. Extremum
Seeking Control. System Tuning Experimentation
Expose controller to various situations.
5
Project Task Descriptions

• Research
• Simulink Modeling
• C Programming
• Implementing
• Testing
• Tuning
• Evaluation

6
Pan Tilt Antenna ControllerTeam Assignments and
Organization

• Research
• Microcontrollers Scott
• Signal Properties Miguel
• Extremum Seeking Andy
• Component Integration Cory
• Programming
• PWM Output Miguel
• Signal Strength Cory
• Compass Input Scott
• Extremum Seeking Andy
• Implementation
• Circuitry Cory, Miguel
• Testing and Tuning Team Effort

7
Pan Tilt Antenna ControllerWork Schedule
Week 6 Initial Position Programming Week 7
Functionality Testing Week 8 Extremum Seeking
Programming Week 9 Tuning Week 10 - Evaluation

• Week 1 Adaptive Control Research
• Week 2 Continuous-Time Modeling
• Week 3 Discrete-Time Modeling
• Week 4 Algorithm Construction
• Week 5 Input/Output Programming

8
Pan Tilt Antenna ControllerProgress to Date

• Research
• Extremum Seeking Control Optimization
• Antenna Network Configuration
• Microcontroller Functionality
• I/O Protocol
• System Model
• Simulink Continuous Model
• Simulink Discrete Model
• C Language Algorithm
• Implementation
• Microcontroller Chosen
• I/O Protocol Acquired