Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Auto coupling PID control of electro hydraulic servo system
| DOI: | 10.11809/bqzbgcxb2024.10.036 |
| Keywords: | electro hydraulic servo; extended auto coupling PD; third order nonlinear system; total disturbance; adaptive speed |
| Abstract: | For the third order electro hydraulic servo system with high nonlinear and parameter uncertainty, an Extended Auto Coupling PD control method based on the Auto Coupling PID control theory is proposed.By defining the internal dynamics and external uncertainties of the electro hydraulic servo system as total disturbances, the third order nonlinear system is equivalently mapped to a third order linear disturbance system, forming a controlled error system under total disturbance excitation. Based on the adaptive speed factor, an extended Auto Coupling PD controller is designed, and theoretical analysis shows that the extended Auto Coupling PD closed loop control system has good robust stability and disturbance resistance robustness.The simulation results show that the proposed control method not only has high dynamic response speed, but also high steady state control precision, so it has a good practical application prospect in the field of electro hydraulic servo system. |
| Issue: | Vol. 45 No. 10 (2024) |
| Published: | 2024-10-31 |
| PDF HTML | |