Abstract:

The acceleration performance of turbojet is one of the important characteristics. In terms of control system, an engine is the controlled object. The acceleration performance not only depends on the engine, but also on the controller, therefore both the engine and the controller must be combined in a control system to make research for this performance.This paper presents a mathematical model of the turbojet acceleration control system and digital simulation method. Because the engine acceleration is a large variation transient process, the models of the engine and the controller are described by nonlinear equations. The methods of solving nonlinear equations and iterative techniques of calculating acceleration control system are discussed in this paper. The calculating results, as compared with test results, show that the simulation for this system is satisfactory.

Key words: acceleration control system, mathematical model, non- linear equation, digital simulation