| ??? 01/11/05 14:19 Read: times |
#84756 - Worked that out Responding to: ???'s previous message |
Of course, that is the fundamental design parameter - and reducing the thermal mass has been an issue. I think we might be able to suck more than 70W, because the heatsink has a -ve thermal resistance - the more you throw at it, within limits the colder it gets ! I haven't done the numbers, using the thermal resistance of an unenergised peltier cell yet.
My point is that the UNcontrolled system passes through the desired temperature in the time I indicated, but no PID controlled system can settle to 0 SSE, in the same time. Your "posicast" system looks like a great method, if I can implement it, and sort of crystallises the kind of nebulous thoughts about what I wanted to do. Steve |
| Topic | Author | Date |
| OT Step responses | 01/01/70 00:00 | |
| Step respons | 01/01/70 00:00 | |
| Happy with PID | 01/01/70 00:00 | |
| Re Happy with PID | 01/01/70 00:00 | |
| more details | 01/01/70 00:00 | |
| Making Use of Three Sensors | 01/01/70 00:00 | |
| Heat pipe? | 01/01/70 00:00 | |
| Minimizing Settling Time | 01/01/70 00:00 | |
| Timing | 01/01/70 00:00 | |
| Heat Transfer Rates and Efficiency | 01/01/70 00:00 | |
| Nice estimation | 01/01/70 00:00 | |
| Worked that out | 01/01/70 00:00 | |
| Segments of different PID parameters | 01/01/70 00:00 | |
| integrating cap | 01/01/70 00:00 | |
| Abruptly changing... | 01/01/70 00:00 | |
| Exaclty | 01/01/70 00:00 | |
| Have you Read Above? | 01/01/70 00:00 | |
| Sorry | 01/01/70 00:00 | |
| Maybe this can help? | 01/01/70 00:00 | |
| Interesting | 01/01/70 00:00 | |
| Reference | 01/01/70 00:00 | |
RE: Reference | 01/01/70 00:00 |