| ??? 03/03/12 15:25 Modified: 03/03/12 15:26 Read: times |
#186387 - Isn't that absolute as well? Responding to: ???'s previous message |
Jim Granville said:
Incremental is used as a tag because it contrasts with Absolute.
An absolute encoder knows where it is thru a power failure, an incremental encoder does not. You see your description of "rotary or linear encoders. ...2500 pulses/turn" is not sufficient information. I can have two rotary encoders, with 2500ppr - but one is Absolute, and the other is incremental (aka Quadrature optionally with index pulse) Many years ago I had an encoder (on a motor) that provided an index and quadrature for 512 discrete positions. The index was fixed, so it persisted through power cycles. Do you consider that one absolute or merely incremental? RE |
| Topic | Author | Date |
| controlling an incremental encoder | 01/01/70 00:00 | |
| controlling the encoders? | 01/01/70 00:00 | |
| Study time! | 01/01/70 00:00 | |
| Encoder is Feed back element | 01/01/70 00:00 | |
| Encoder is normally feedback loop... | 01/01/70 00:00 | |
| Incremental? | 01/01/70 00:00 | |
| Incremental contrasts with Absolute | 01/01/70 00:00 | |
| Relative | 01/01/70 00:00 | |
| A small positive or negative change | 01/01/70 00:00 | |
| Isn't that absolute as well? | 01/01/70 00:00 | |
| trick question? | 01/01/70 00:00 | |
| by contrast ... | 01/01/70 00:00 | |
| yes, but | 01/01/70 00:00 | |
| O.K. I get it ... | 01/01/70 00:00 | |
| Even With Index | 01/01/70 00:00 | |
| Single Track Absolute Encoders | 01/01/70 00:00 | |
| just a point | 01/01/70 00:00 | |
| re | 01/01/70 00:00 | |
| Wrong sort of encoder! | 01/01/70 00:00 | |
Spammer | 01/01/70 00:00 |