发动机控制系统数学模型的建立及加力动态特性的仿真研究

 本文建立了某新型发动机及其控制系统的数学模型。编制了一套完整的发动机系统的数字仿真程序。利用此程序已对新定型的某发动机及其控制系统进行了多方面的仿真研究。文中着重分析了前人很少涉及的加力动态特性方面的某些问题。

THE ESTABLISHMENT OF MATHEMATICAL MODEL OF ENGINE CONTROL SYSTEM AND SIMULATION RESEARCH OF AFTERBURNING DYNAMIC CHARACTERISTICS

The static and dynamic mathematical models of a new-type of engine and its hydraulic control system are established. For recurring the real system, a nonlinear mathematical model is used in the engine and afterburning fuel control system. Component characteristics is used to formulate a set of nonlinear equations solved by descending order method, the mathematical model thus can be obtained.The program made on basis of these models is implemented on a large digital computer. It can be used to conduct simulation research. Program flow charts for solving static and dynamic mathematical model are illustrated.Using this program, detailed analysis has been made for the static and dynamic close loop characteristics of this engine and its control system under the condition of afterburning. Satisfactory results and valuable conclusions have been obtained. The research is useful in solving the practical problem for this engine control system and to conduct the improvement of new designs in the future.