Abstract
On the basis of mathematical model analysis of the three-motor synchronous control system, combined with characteristics of active disturbance rejection control theory, a new control method based on second-order active disturbance rejection controller(ADRC) is designed and applied into the synchronous control of three-motor variable frequency speed-regulating system. Three second -order ADRCs are designed for speed control loop and two tension control loops to achieve system dynamic decoupling between speed and tension. In the second-order ADRC, the internal interference in system model, the external disturbance and the coupling effects between speed and tension are made as a total system disturbance by extended state observer, and the extended state observer is used to estimate and compensate the total disturbance of the system. Three experiments of decoupling property, tracking performance and anti-disturbance performance are completed on the platform based on SIMATICS 7-300 power PLC. The results show that second-order ADRC can realize the decoupling control of speed and tension in three-motor synchronous system, improve the anti-interference ability, and make the system has stronger robustness.
| Original language | English |
|---|---|
| Pages (from-to) | 179-184 |
| Number of pages | 6 |
| Journal | Diangong Jishu Xuebao/Transactions of China Electrotechnical Society |
| Volume | 27 |
| Issue number | 2 |
| Publication status | Published - Feb 2012 |
| Externally published | Yes |
Keywords
- Active disturbance rejection control
- Decouple control
- Second order
- Speed
- Synchronous control
- Tension