| ??? 10/18/06 23:42 Read: times |
#126716 - Danger ahead Responding to: ???'s previous message |
There seems to me to be an inherent danger of using 4 pwms to control a 'h' bridge. The reason is, how do you guarantee that the correct operation occurs in all circumstances? It takes a finite amount of time for the cpu to change 4 pwms via software - so unless the hardware is designed to cope with this, smoke may occur when two opposing drivers are turned on albeit briefly. There are specific microcontrollers with the inbuilt hardware specifically for this purpose. Using general hardware to perform this is probably 'not a good idea'. |
| Topic | Author | Date |
| Full bridge controlled by 4 PWMs | 01/01/70 00:00 | |
| This will tell you how to post a diagram | 01/01/70 00:00 | |
| one way | 01/01/70 00:00 | |
| Danger ahead | 01/01/70 00:00 | |
| Hmm. | 01/01/70 00:00 | |
| an even better Idea | 01/01/70 00:00 | |
| an even even better idea | 01/01/70 00:00 | |
| maybe IR has something | 01/01/70 00:00 | |
| found a way... | 01/01/70 00:00 | |
| Switching | 01/01/70 00:00 | |
| switching.... | 01/01/70 00:00 | |
| lets put it this way | 01/01/70 00:00 | |
| only good for small motor | 01/01/70 00:00 | |
| schematics | 01/01/70 00:00 | |
| IPM? | 01/01/70 00:00 | |
IPM | 01/01/70 00:00 | |
| My Code | 01/01/70 00:00 |