针对变循环发动机部件法建模及优化问题,首先使用部件法对变循环发动机进行建模,列出发动机各部件匹配工作时,受制约的7个平衡方程;然后,根据发动机工作时的已知条件以及发动机的部件法数学模型,推导出以7个平衡方程为基础的非线性方程组,并使用粒子群算法求解非线性方程组,实现变循环发动机部件法建模及优化;最后,对模型进行了评价并提出了改进方法.结果表明,粒子群算法对于求解变循环发动机非线性方程组具有较好的收敛性 Aiming at the modeling and optimization of variable cycle engine part method, firstly, the component method is used to model the variable cycle engine, and the seven equilibrium equations which are subject to control when each part of the engine is matched are listed. Then, Conditions and the mathematical model of the parts of the engine, derive a nonlinear equations based on seven equilibrium equations, and use the particle swarm optimization algorithm to solve nonlinear equations to achieve variable cycle engine part method modeling and optimization; Finally, the model The results show that the PSO has better convergence for solving the nonlinear equations of variable cycle engine