| ??? 01/24/09 06:02 Read: times |
#161708 - Closed loop for HDD head coil help |
Hello, I want to drive a voice coil from a HDD, I thought in installing a type of potentiometer in its shaft to receive the feedback, but I dont know now if its better to connect this potentiomenter to an ADC and make the control via software by a H-bridge, or some type of circuit that receives digital or analogic signal from the microcontroller then makes the comparation with the potentiometer by itself.
Also, I thought about a led that moves with the coil, and a photo diode fixed to make the feedback, can this work? Is what I'm saying right? What is better? In case of the circuit, what its name? Thanks. |
| Topic | Author | Date |
| Closed loop for HDD head coil help | 01/01/70 00:00 | |
| Maybe it will work ... or maybe not. | 01/01/70 00:00 | |
| Gradient transparency + led + photo-diode? | 01/01/70 00:00 | |
| it will not be easy | 01/01/70 00:00 | |
| more info | 01/01/70 00:00 | |
| It's not as easy as one might think | 01/01/70 00:00 | |
| harder than I thought | 01/01/70 00:00 | |
| There are ways ... | 01/01/70 00:00 | |
| speed is essential when drawing | 01/01/70 00:00 | |
| Yes, faster is better in this case | 01/01/70 00:00 | |
| Relativity | 01/01/70 00:00 | |
| That would likely work | 01/01/70 00:00 | |
Flexible Thinking - Flexible Arm | 01/01/70 00:00 |