Department of Mechanical Engineering
Design and Manufacturing
II
ME350 Fall 2002
|
Department of Mechanical Engineering Design and Manufacturing
II
|
|
RESOURCE PAGE FOR ME350
MECHATRONICS
bob's
home page
MOTOR CONTROLLERS,
CABLES, AND PROXIMITY SWITCHES
can be checked out beginning Thursday,
October 17.
Time: Thursdays 6:00 pm to 7:20 pm
Location: room 2178 GG Brown
To set up an alternate checkout time,
contact Steve Emanuel: fulcrum@umich.edu
Note: These materials must be returned
at the end of the semester for you to revceive a grade for the course.
Course materials are available
below:
Fast Instructions
for using the Motor Controller, Cables, and Photodetectors:
1- Check out the
hardware from Steve "Vicegrip" Emanuel (fulcrum@umich.edu)
2- Solder the motor
cable to your motor (this is a brown "lamp cord", two conductor cable)
3- Connect the power
bus (plastic plate with two screws and a RED and BLACK wire) to the board
4- Clip the battery
charger to the power bus bolts. BE SURE TO MATCH THE WIRE COLORS:
BLACK battery charger clamp connects to the bolt with the BLACK wire
RED battery charger clamp connects to the bolt with the RED wire
5- Plug in the battery
charger.
6- After a short
delay, the motor should start spinning:
Allow an initial startup delay of at least 5 seconds after applying power
The initial direction will depend on how you soldered the cable to the
motor
The motor will spin for 5 seconds, then it will apply a brake for 1 second
The motor will spin in the opposite direction for 5 seconds, then it will
brake for 1 second
The motor will reverse and continue the % seconds ON, 1 second BRAKE cycle,
reversing every 6 seconds
7- This simple procedure
will allow you to test your mechanisms. You may add photointerrupters
at a later point if you wish to gain additional control over the motion
of your mechanism. Details for how to do this are included below.
LMD18245 Motor Controller Datasheet
Instructions for Programming the Microcontrollers in the Motor Controller Circuits
Sample "C" code for Microcontroller:
The following files are just
text files with a *.c extension. You can read them with any text
editor.
We compile these programs and
burn them into the memory of a microcontroller in the lab.
This has been done for you,
but you can modify the source code to change the function of the controller.
(for example,
you can change the current level to the motor, the time delays, etc...)
Example #1:
Simple motor driver: reverse every 5 seconds (no detectors) source code:
me350t.c
Example #2: Drive motor from
Detector to Detector
Below is a link to the HELP files for the
compiler program for the microcontrollers. It gives examples of syntax
for the simple C code.
Help File
for "C" Compiles (CCS)
Comments, questions, suggestions? Send a message to Prof. Robert Dennis, Department of Mechanical Engineering, the University of Michigan