Constant Speed Control of Four-stroke Micro Internal Combustion Swing Engine

查看全文 作　　者：GAO [1,2]Dedong;LEI [1]Yong;ZHU [3]Honghai;NI [3]Jun

机构地区：[1]State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University;[2]School of Mechanical Engineering, Qinghai University;[3]Department of Mechanical Engineering, University of Michigan

出　　处：《Chinese Journal of Mechanical Engineering》索引2015年第28卷第5期,共12页

基　　金：Supported by National Natural Science Foundation of China(Grant No.51475422);Science Fund for Creative Research Groups of National Natural Science Foundation of China(Grant No.51221004) 摘　　要：The increasing demands on safety, emission and fuel consumption require more accurate control models of micro internal combustion swing engine(MICSE). The objective of this paper is to investigate the constant speed control models of four-stroke MICSE. The operation principle of the four-stroke MICSE is presented based on the description of MICSE prototype. A two-level Petri net based hybrid model is proposed to model the four-stroke MICSE engine cycle. The Petri net subsystem at the upper level controls and synchronizes the four Petri net subsystems at the lower level. The continuous sub-models, including breathing dynamics of intake manifold, thermodynamics of the chamber and dynamics of the torque generation, are investigated and integrated with the discrete model in MATLAB Simulink. Through the comparison of experimental data and simulated DC voltage output, it is demonstrated that the hybrid model is valid for the four-stroke MICSE system. A nonlinear model is obtained from the cycle average data via the regression method, and it is linearized around a given nominal equilibrium point for the controller design. The feedback controller of the spark timing and valve duration timing is designed with a sequential loop closing design approach. The simulation of the sequential loop closure control design applied to the hybrid model is implemented in MATLAB. The simulation results show that the system is able to reach its desired operating point within 0.2 s, and the designed controller shows good MICSE engine performance with a constant speed. This paper presents the constant speed control models of four-stroke MICSE and carries out the simulation tests, the models and the simulation results can be used for further study on the precision control of four-stroke MICSE. 关键词：恒速控制四冲程 PETRI网系统微型内燃机控制器设计 SIMULINK 控制模型

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Constant Speed Control of Four-stroke Micro Internal Combustion Swing Engine

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