Open AccessAdaptive Sliding Mode Control of Artillery Coordinator Based on Disturbance Observer
Author(s) -
Jinjie Gan,
Longmiao Chen
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/825/1/012044
Subject(s) - control theory (sociology) , sliding mode control , artillery , servomechanism , mode (computer interface) , control system , state observer , control engineering , engineering , disturbance (geology) , observer (physics) , computer science , control (management) , nonlinear system , physics , electrical engineering , quantum mechanics , artificial intelligence , operating system , paleontology , biology
In order to improve the control accuracy of the artillery coordinator composed of hydraulic servo system under various uncertain conditions such as extreme environment, unknown disturbances, and system parameter changes, an adaptive sliding mode control strategy based on disturbance observer is designed. Sliding mode control can make the system follow the designed sliding mode dynamic surface state trajectory, and realize the control of non-linear system. Increasing adaptive control can prevent system failure due to excessive sliding mode switching gain. Based on this, disturbance observers are added, feed-forward compensation is performed, and the influence of system parameters and load torque changes on the system is reduced to reduce chattering and effectively improve control performance. The electro-hydraulic joint simulations show that the algorithm can make the system meet the control requirements under complex working conditions under different coordination angles, ammunition and no-load conditions.