Mark Bright

1

• By
• Mark Bright
• and
• Mike Donaldson

2

• Project Goal
• Applications of our system
• System Block Diagram
• Thermal Plant Overiew
• Current Progress
• Engine Side (Mark)
• Thermal Side (Mike)

3

• The goal of our Engine Control Workstation is to
  simulate thermal environments that are found in
  liquid-based cooling systems.
• With this simulation we are creating several
  different control methods via MATLAB and Simulink
  that all work together to control both the engine
  and thermal transient responses.
• Both of which combine to reduce system energy
  usage

4
Applications of our system
PC Application
Car Application
5
Thermistor
Flowmeter
Pump
Motor
Cooling Block
6
(No Transcript)
7
X
8

• 32-bit Processor
• 30 MHz Clock
• 16 A-D channels
• 12 PWM Digital I/O Channels
• 128K on-chip Flash memory
• 9 Ports total
• 3.3 v Supply
• Interface with TI C2000 Simulink System

9

• What is it?
• Two Square Waves 90º out of phase
• How does this improve accuracy?
• Four times as many pulse counts
• Allows for 5 RPM Error Max
• Used in DSP Port 8 Pins 6 and 7

10

• Drag QEP Block from Simulink
• Code Below is Auto-Generated from Simulink
• Show as Inner Shaft RPM in Code Composer
• Show as Out Shaft RPM in GUI

11
Proportional, Integral Control

• PI Control was added
• Integral Controller is (z/z-1)
• K was tuned to .0005
• Ess 20RPM
• All data is sent to the GUI

12

• Performed Bilinear Transformation in MATLAB
• Bilinear Transform converts an analog controller
  to a digital controller
• Tuned Gain 1/34.2 instead of 1/17.1 (inverse of
  plant)

13

• 100 RPM Step Input
• Smaller time to first Peak (Tp) by 20 mS
• Less Overshoot
• Ess0

PI Control Only
FF Compensation
14

• User can input desired RPM
• Outputs RPM, Duty Cycle, Transient Response
• Updates in real time
• Will add more as the project continues

15
(No Transcript)
16
(No Transcript)
17
(No Transcript)
18

• Variable Resistance
• Anti-aliasing filter

X
19

• Conversion of A/D Value to Temperature
• Excel Trendline
• Moving Average Filter

20
(No Transcript)
21
Simulink Implimentation

• Datatype conversions
• Function auto-code generated

22

• Interface from digital to analog
• Average Voltage seen by the device

23

• Opto-Isolator
• TIP120 choice
• Design for 3A

24

• Increase Base current
• Increase voltage from 12-volt regulator (more
  later)
• Does any PWM work ?
• 300mHZ !

25

• LPF to DC the PWM
• Ideal Op Amp theory
• Voltage _at_ Input Voltage _at_ Pump

26
(No Transcript)
27
(No Transcript)
28

• Nick Schmidt
• Case Assembly
• Hardware Assembly

29
(No Transcript)
30
(No Transcript)
31

• Motivation
• TIP 120 Vce drop 880mv
• 13.5 volts max for pump/fan

Linear/Switchmode Voltage Regulator Handbook
32

• OCHANs allow for data to be outputted to
• GUI
• Workspace

33
(No Transcript)
34
(No Transcript)
35
(No Transcript)
36
(No Transcript)
37
(No Transcript)
38
P Vce Ie
39
(No Transcript)
40
(No Transcript)
41
(No Transcript)
42
(No Transcript)
43
Simulink Implimentation
44
(No Transcript)
45
(No Transcript)
46

• Start, Type guide in MATLAB
• GUI can be designed here with many components
• Once designed, MATLAB auto-generates a .m file
  and .fig file

47

• Started with Professor Dempsey PWM Tutorial
• Interfaced DSP Board, Simulink and PWM for Motor
• Tutorial Contents
• Simulink Model
• Auto-Gen .m file
• Auto-Gen .fig file
• Demo .m file
• DSP/Simulink Interface .m file

48

• PWM Brush Type Servo Amplifer Model 10A8DD
• Protected for over-voltage and over-current
• DC Supply Voltage 20-80v
• Peak Current 10A
• Maximum Continuous Current 6A

49
(No Transcript)
50
(No Transcript)
51
(No Transcript)