Idle speed performance improvement via torque balancing control in ignition-event scale for SI engines with multi-cylinders

Li, P; Shen, Tielong; Liu, D

doi:10.1177/1468087411405415

Cited by 7 publications

(3 citation statements)

References 14 publications

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“…In previous studies, with regard to using ADRC in IC engines speed control, there is not much attention drawn to such traits. However, in the practical control of IC engine speed, it is necessary to design the control strategy in the CA domain and some algorithms can only be implemented in the CA domain, such as the torque balancing control [58,59], which needs to treat the individual cylinder independently in the CA domain. As the proposed ADRC method is CA based, therefore, it can be combined with the torque balancing control strategy to further enhance the speed control performance.…”

Section: Discussionmentioning

confidence: 99%

Variable Sampling Rate based Active Disturbance Control for a Marine Diesel Engine

Wang

Liu

et al. 2019

Electronics

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In this paper, in order to handle the high nonlinearity and the sophisticated disturbance in marine engines, a variable sampling rate based active disturbance rejection controller is developed for engine speed control. In the proposed method, the Active Disturbance Rejection Control (ADRC) is designed with the consideration of the practical application in engine speed control that is known as the Crank-angle (CA) based or event-based sampling and control, which means the sampling interval varies with the engine speed. Such a problem has not been discussed in any previous study regarding the application of ADRC in engine control. To this end, this paper discusses the convergence of the variable sampling rate based Extended State Observer (ESO), as well as its parameters that guarantee stability. To verify the proposed control scheme more properly, a cycle-detailed hybrid nonlinear engine model is employed. Finally, simulations are carried out on the Hardware-in-the-loop (HIL) system to assess the superiority of the proposed strategy. The comparative results with a Fuzzy-Proportional-Integral-Derivative (PID) controller demonstrate that the proposed control scheme has better adaptation to engine speed, load disturbances, and stronger robustness towards model uncertainties, which indicates a promising reduction of time and burden for calibrating the controller. It also proved that the proposed CA based ADRC by variable sampling rate method outperforms the general fixed sampling rate ADRC, which is widely used in previous works. Moreover, the successful application of the proposed algorithm via CA based strategy in a real Engine Control Unit (ECU) indicates its huge potential in practical engine control.

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Section: Discussionmentioning

confidence: 99%

Variable Sampling Rate based Active Disturbance Control for a Marine Diesel Engine

Wang

Liu

et al. 2019

Electronics

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“…Once the speed exceeds to 112% of the declared speed and lasts for a short period, the state mode will change to 3 and the over-speed state will take over immediately to keep the diesel engine from damage. 15–18…”

Section: Control Strategiesmentioning

confidence: 99%

Research and development of electronic speed control strategies for medium-speed marine diesel engines

Yang

et al. 2017

International Journal of Engine Research

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Modern diesel engine systems rely more and more on electronic control systems. The benefits of such electronic control systems include reduced fuel consumption, limited emissions and enhanced performance. Following the trend, this article aims to derive an appropriate methodology for improving the performance of the speed regulation by upgrading an existing mechanical governing control system to an electronic one for the marine diesel engine. Hardware-in-loop simulations and the diesel engine test-bed experiments are applied to realize a V-type mode study of the speed control strategies for the marine medium-speed diesel engines. First, the algorithm of the strategies and the functions of the electronic control unit are verified through hardware-in-loop test bench which is established using hardware devices and a software tool chain from ETAS GmbH. Additionally, the specific parameters are modified and calibrated finely on the test bed with an online debugging system. Finally, to demonstrate the performances and the generality of the proposed control strategies, the test-bed results of the two types of marine diesel engines are illustrated. The experimental results indicate that a better performance is achieved by replacing the original controller with the proposed controller. And the methodology of the control strategies development is proven to be efficient.

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“…The periodic instant speed signal in the crank-angle (CA) domain is cyclic but aperiodic in the time domain as the engine speed varies [23]. The inherent speed fluctuation would be more serious when affected by cylinder-to-cylinder and cycle-to-cycle differences in torque production [21,24]. Furthermore, the deviations in engine speed caused by imbalance working in cylinders are characterized as periodic disturbances in the CA domain [21] rather than the general time domain, which has been proved as a difficulty for asymptotic tracking and disturbance rejection [23].…”

Section: Introductionmentioning

confidence: 99%

Speed Control for a Marine Diesel Engine Based on the Combined Linear-Nonlinear Active Disturbance Rejection Control

Wang

Zhang

et al. 2018

Mathematical Problems in Engineering

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In this paper, a compound control scheme with linear active disturbance rejection control (LADRC) and nonlinear active disturbance rejection control (NLADRC) is designed to stabilize the speed control system of the marine engine. To deal with the high nonlinearity and the complex disturbance and noise conditions in marine engines, the advantages of both LADRC and NLADRC are employed. As the extended state observer (ESO) is affected severely by the inherent characteristics (cyclic speed fluctuation, cylinder-to-cylinder deviations, etc.) of the reciprocating engines, a cycle-detailed hybrid nonlinear engine model is adopted to analyze the impact of such characteristics. Hence, the controller can be evaluated based on the modified engine model to achieve more reliable performance. Considering the mentioned natural properties in reciprocating engines, the parameters of linear ESO (LESO), nonlinear ESO (NLESO), and the switching strategy between LADRC and NLADRC are designed. Finally, various comparative simulations are carried out to show the effectiveness of the proposed control scheme and the superiority of switching strategy. The simulation results demonstrate that the proposed control scheme has prominent control effects both under the speed tracking mode and the condition with different types and levels of load disturbance. This study also reveals that when ADRC related approaches are employed to the reciprocating engine, the impact of the inherent characteristics of such engine on the ESO should be considered well.

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Idle speed performance improvement via torque balancing control in ignition-event scale for SI engines with multi-cylinders

Cited by 7 publications

References 14 publications

Variable Sampling Rate based Active Disturbance Control for a Marine Diesel Engine

Variable Sampling Rate based Active Disturbance Control for a Marine Diesel Engine

Research and development of electronic speed control strategies for medium-speed marine diesel engines

Speed Control for a Marine Diesel Engine Based on the Combined Linear-Nonlinear Active Disturbance Rejection Control

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