| ??? 02/26/05 17:08 Read: times Msg Score: 0 +1 Good Question -1 Didn't Search First |
#88547 - Digital position encoder |
Hello everybody.
I have a problem with digital position encoder. Introduction: The digital position encoder is device, which is attached on the motor and it generate impulses when the motor is rotating. The encoder has a two output channel with phase shift 90°. I have these output from encoder connected to TH0(P3.4) and TH1(P3.5) pins of my 8052 derivate microcontroller. When the signal on channel A is comming sooner than signal on channel B, the result is in rotating motor to right. In the other case, when the signal on channel B is commning sooner than signal on channel A, the result is in rotating motor to left. When signals not comming, motor is stopped. The position of something (e.g. carrier lift) can be dedicate by counting of impulses generated by encoder. Question: Can you give me advice how should I make service routines (the best in C language) for dedicate direction and number of impulses? I am in hurry I have to solve the problem in few days. I make programs for 8051 derivate microcontroller, especially in measurements system for some years but this is new for me. Thank you all for fast response. PS: Sorry for my not good english, but I still studying it :) |
| Topic | Author | Date |
| Digital position encoder | 01/01/70 00:00 | |
| Dont do this. | 01/01/70 00:00 | |
| Signals are not connected directly | 01/01/70 00:00 | |
| Is assembly ok? | 01/01/70 00:00 | |
| For Mehdi | 01/01/70 00:00 | |
| its easy in software | 01/01/70 00:00 | |
| but | 01/01/70 00:00 | |
| same resolution | 01/01/70 00:00 | |
| But...what if ? | 01/01/70 00:00 | |
| So what is the solution? | 01/01/70 00:00 | |
| absolutely no problem | 01/01/70 00:00 | |
| Thank you | 01/01/70 00:00 | |
| PLEASE not again | 01/01/70 00:00 | |
| Sorry | 01/01/70 00:00 | |
| list.hw.cz | 01/01/70 00:00 | |
| thank you | 01/01/70 00:00 | |
| Re: PLEASE not again | 01/01/70 00:00 | |
| Re frequency | 01/01/70 00:00 | |
| So what frequency do we sample at? | 01/01/70 00:00 | |
| I try to explain Peter's idea again | 01/01/70 00:00 | |
| We know it ! | 01/01/70 00:00 | |
| Nothing ??? | 01/01/70 00:00 | |
| it takes time | 01/01/70 00:00 | |
| Code doesn't function | 01/01/70 00:00 | |
| reverse direction ! | 01/01/70 00:00 | |
| This is not a problem | 01/01/70 00:00 | |
| incorrect operation? | 01/01/70 00:00 | |
| right connection ? | 01/01/70 00:00 | |
| I dunno | 01/01/70 00:00 | |
| Now... | 01/01/70 00:00 | |
| check the sample condition ! | 01/01/70 00:00 | |
| clarify | 01/01/70 00:00 | |
| @Erik | 01/01/70 00:00 | |
| @Peter | 01/01/70 00:00 | |
| Grey code | 01/01/70 00:00 | |
| Grey code more | 01/01/70 00:00 | |
| Grey INCREMENTAL ? | 01/01/70 00:00 | |
| I guess 98 | 01/01/70 00:00 | |
| Gray code | 01/01/70 00:00 | |
| Not a gray code | 01/01/70 00:00 | |
| Grey | 01/01/70 00:00 | |
| Yes of course its Grey code | 01/01/70 00:00 | |
| Absolute Vs Incremental | 01/01/70 00:00 | |
| So now... | 01/01/70 00:00 | |
| Yes it can but only... | 01/01/70 00:00 | |
| Peter is right! | 01/01/70 00:00 | |
| Lover not a fighter :-) | 01/01/70 00:00 | |
| Lover of software | 01/01/70 00:00 | |
| steps lost or not | 01/01/70 00:00 | |
| Determining direction | 01/01/70 00:00 | |
Its not Grey, its Gray ! | 01/01/70 00:00 |