| ??? 12/06/04 19:55 Read: times |
#82642 - back-emf Responding to: ???'s previous message |
A suited regulation circuit 'looks' at the voltage generated by the motor, when it is disconnected from supply voltage, means when the motor works like a generator. As then no relevant current through the motor is flowing, observable voltage across motor terminals is directly proportional to the speed! This is the "back-emf" technique whereof I spake earlier: http://www.8052.com/forum/read.phtml?id=82584 |
| Topic | Author | Date |
| rpm dc motor with variable load | 01/01/70 00:00 | |
| Most Accurate Control | 01/01/70 00:00 | |
| PID | 01/01/70 00:00 | |
| 20% speed tolerance | 01/01/70 00:00 | |
| tapping brushed motor is applicable | 01/01/70 00:00 | |
| brushed motor | 01/01/70 00:00 | |
| Wrong Approach | 01/01/70 00:00 | |
| Some suggestions | 01/01/70 00:00 | |
| low-speed | 01/01/70 00:00 | |
| Control | 01/01/70 00:00 | |
| Change the motor ! | 01/01/70 00:00 | |
| Continuously and discontinuously | 01/01/70 00:00 | |
| back-emf | 01/01/70 00:00 | |
| Or. | 01/01/70 00:00 | |
| give me some time | 01/01/70 00:00 | |
problem solved | 01/01/70 00:00 |