| ??? 10/04/07 16:14 Read: times |
#145394 - Questions Responding to: ???'s previous message |
Student ,or Not
For What? PID only works in the proper application. How Fast? Note that PI maybe enough, PID is harder to tune. Note that there are 2 similar formulas. vaguely: 1. Calculate the error (E) 2. Add the error to a sum of errors (SumError) 3. Subtract the error from the last error (Derror) 4. Out = (Const_P *E) + (Const_I * SumError) + (Const_D * Derror) That is the basic way. If you are doing as real controller you may need to normalize and linearize the input and output (0 - 100%) and account for time if you want to use published tuning formulas. Don't forget to clamp integral windup. That is a start. |
| Topic | Author | Date |
| 89c51 PID Control | 01/01/70 00:00 | |
| 01/01/70 00:00 | ||
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