Monday, March 5, 2012

Previous Project and Research From The Books and Internet


Title of activity- Do some research and what need to be attached at the project
Objective- got overview of the project by looking video for research and leaned what circuit should be constructed.
Content-these are some research and idea for my project
1.      http://www.youtube.com/watch?v=adkq_apZeTk (speed control)
2.      http://www.youtube.com/watch?v=S9dVIOP5oUE ( Closed loop by using lab view)
3.      http://www.youtube.com/watch?v=cn83jR2mchw(sensor need to be used)

Results and analysis

-Problem encounter
1.If I use infra red (IR) as transmitter and receiver for optical encoder for more narrow light. In theory, these will allow me to increase the resolution of optical encoder by increasing the number of slots.  Thus, it will reduce the steady state error .Besides, time for getting data and for controller to take action also can be reduced.  So, the motor speed response will become better. So, we need to try weather it is function or not.
2. Due to the size of photodiode which is quite big, the number of slots at cardboard that can be used is 8. The rotary encoder also have a less durability to do a constant test, because it easy to broke.


Conclusion
I have detected  some problem  in sensor and I choose optical encoder because  it produce pulse and it is easier to compare to lab view or PIC.

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