Marine diesel engine speed control based on adaptive state-compensate extended state observer-backstepping method

Abstract

The marine diesel engine propulsion system is a nonlinear system with time delay. In order to realize the accurate and real-time control of the marine diesel engine speed, a new method based on state-compensate extended state observer, backstepping method and beetle antennae search algorithm, that is, adaptive state-compensate extended state observer-backstepping, is proposed. First of all, the response relationship model between the engine speed and the fuel injection is established on the basis of the mean value model of diesel engine. Then, to deal with the load disturbances and model parameter perturbation of diesel engine, a state-compensate extended state observer is used to estimate lumped disturbances and states of the diesel engine, and a backstepping method combined with the state-compensate extended state observer, namely state-compensate extended state observer-backstepping, is used to control the marine diesel engine speed. Then, an adaptive state-compensate extended state observer-backstepping controller is proposed by introducing the beetle antennae search algorithm for online optimization of the control parameters. Finally, simulation experiments based on the model of the 12K98ME marine diesel engine are conducted to verify the effectiveness of the proposed controller under conditions of random disturbances, sudden dumping load and parameter perturbation. The experiment results show that the proposed adaptive state-compensate extended state observer-backstepping control method has a better control effect and stronger disturbance rejection ability in comparison of the standard linear active disturbance rejection control.

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

“…e proposed method can be applied to control issues of other systems which have known nonlinear terms. (2) In practical, the proposed method can maintain quick regulation and fewer tuning parameters of diesel engine speed under different external and system disturbances and has more practical significance compared with LADRC. Actually, the fuel injection signal of a marine diesel engine is usually maintained at several fixed positions for safety and economy.…”

“…Castillo et al, Zheng et al, and Gao proposed a linear active disturbance rejection control (LADRC), which reduced its adjustment parameters to two, greatly promoting its industrial application [18][19][20]. Compared with the wide application and theoretical research of LADRC, it is noted that the nonlinear ESO proposed in this manuscript is rarely studied [2,21]. erefore, it is essential to further study the nonlinear extended observer.…”

“…For the energy efficient and environmental friendly, diesel engines are widely used in ship transportation [1,2]. For ship propulsion systems, the primary task of the control system of the diesel engine is to keep the speed steady in the inherently unstable and unpredictable external environment [3].…”

Improved Beetle Antennae Search Algorithm-Based Lévy Flight for Tuning of PID Controller in Force Control System

“…e algorithm not only has individual and environment recognition abilities but also can ensure a compatible balance in the exploratory stages. Beetle antennae search algorithm has been used in many engineering fields, such as unmanned aerial vehicle avoidance [40] , path planning and control systems [41][42][43]. Although BAS has been widely used in engineering fields, it still has some shortcomings.…”

A Hardware Descriptive Approach to Beetle Antennae Search

“…Wu et al [8] used BAS algorithm to optimize obstacle avoidance systems of UAV and robot separately. Xie et al [11] [12], [13] applied BAS to the design and optimization of ship collision avoidance system and precise control of marine diesel engine. In addition, BAS is applied to the design of power system and the construction of stock investment model [9], [14], [16], [17].…”