Finite-Time Speed Control of Marine Diesel Engine Based on ADRC

Abstract

In this paper, in order to handle the nonlinear system and the sophisticated disturbance in the marine engine, a finite-time convergence control method is proposed for the diesel engine rotating speed control. First, the mean value model is established for the diesel engine, which can represent response of engine fuel injection to engine speed. Then, in order to deal with parameter perturbation and load disturbance of the marine diesel engine, a finite-time convergence active disturbance rejection control (ADRC) is proposed. At the last, simulation experiments are conducted to verify the effectiveness of the proposed controller under the different load disturbances for the 7RT-Flex60C marine diesel engine. The simulation results demonstrate that the proposed control scheme has better control effect and stronger anti-interference ability than the linear ADRC.

Fly-Around Control of Space Tumbling Target Under Multiple Constraints

“…First, the relative motion equation in the RLOS coordinate system is derived and transformed into a form that is convenient for the controller design. Second, under the constraints of external disturbance and internal modeling uncertainty, the compound controller is designed based on two control methods: ADRC [51]- [56] and SMC [57]- [62]. The simulation results show that the controller designed in this study can effectively suppress the disturbance, overcome the chattering problem of the traditional SMC, and have good control quality and strong robustness.…”