1. Pan Tilt Antenna Controller Midterm Progress Report
Group Number E8
Project Sponsor: Calit2
Course Advisor: Jan Kleissl
Project Advisors: Daniel …
Team Members: Miguel …
Cory

2. Pan Tilt Antenna Controller Project 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:
Transform 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:
Microcontroller 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 Controller Team 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
Implementation:
Circuitry – Cory, Miguel
Testing and Tuning – Team Effort

7. Pan Tilt Antenna Controller Work Schedule
Week 1 – Adaptive Control Research
Week 2 – Continuous-Time Modeling
Week 3 – Discrete-Time Modeling
Week 4 – Algorithm Construction
Week 5 – Input/Output Programming
Week 6 – Initial Position Programming
Week 7 – Functionality Testing
Week 8 – Extremum Seeking Programming
Week 9 – Tuning
Week 10 - Evaluation

8. Pan Tilt Antenna Controller Progress 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