| ??? 07/20/05 17:08 Modified: 07/20/05 17:37 Read: times Msg Score: +3 +2 Informative +1 Good Answer/Helpful |
#97691 - Mathematics helps to understand... Responding to: ???'s previous message |
Sun said:
The thing is, I have always imangined filters to be usefull in AC applications, at it responds to frequency. So how will filters (used to impliment intergration and differentiation) be used in DC applications? I am aware that a DC pulse is "made up" the addition of harmonics, is the trick that I am failing to see? The best way to understand this ambiguity is to have some mathematics. Let's have a look at a classic integrator to see what happens:  
which clearly shows, that this circuit works like a low pass filter, means the higher the frequency the smaller the amplitude of output signal. Kai |
| Topic | Author | Date |
| Off Topic - A control systems question | 01/01/70 00:00 | |
| Filters to provide PID-controlling | 01/01/70 00:00 | |
| A question | 01/01/70 00:00 | |
| frequency - delay | 01/01/70 00:00 | |
| Another perspective | 01/01/70 00:00 | |
| I would to understand | 01/01/70 00:00 | |
| Plant response | 01/01/70 00:00 | |
| How the controller controls the plant | 01/01/70 00:00 | |
| filters ... | 01/01/70 00:00 | |
| Mathematics helps to understand... | 01/01/70 00:00 | |
| How come ? | 01/01/70 00:00 | |
| Fluxions | 01/01/70 00:00 | |
| Pictures and animated graphics and all | 01/01/70 00:00 | |
| Very nice link, indeed! | 01/01/70 00:00 | |
thank you all. | 01/01/70 00:00 |