Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Control of erection hydraulic system based on LESO LTV MPC
| DOI: | 10.11809/bqzbgcxb2024.12.033 |
| Keywords: | erection hydraulic system; state estimation; linear extended state observer; model predictive control; parameter identification; recursive least squares; displacement tracking |
| Abstract: | In view of the problems of low control accuracy and complicated algorithms of common control methods in large hydraulic equipment control, a Linear Time Varying Model Predictive Control (LTV MPC) method based on Linear Extended State Observer (LESO) is proposed. The LESO is designed to estimate the current state of the system in real time by the state space equation of the erection hydraulic system; the optimal solution of the proportional valve voltage signal is output by the LTV MPC.The effectiveness of the proposed method is verified through simulation and experimentation.The results show that when there is no disturbance, compared with other control strategies, the control error ratio of LESO LTV MPC is 0.014%, which has high control accuracy; when large disturbances are imposed, the control error ratio of LESO LTV MPC is 0.223%, which has strong robustness.Therefore, this control strategy can effectively improve the performance of the erection hydraulic system. |
| Issue: | Vol. 45 No. 12 (2024) |
| Published: | 2024-12-30 |
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