针对涡轴发动机,为了更好的满足控制系统的实时性要求和提高控制性能,建立了数值稳态非线性模型和ARX动态线性模型相串联的组合模型,并将其作为预测模型,设计了非线性预测控制器。由于优化求解控制器时避免了非线性规划问题,控制系统的实时性得以保证。仿真结果表明,当旋翼负载变化时,功率涡轮转速收敛速度快,稳态精度高,超调量小。 In order to meet the requirement of real-time control system and improve the control performance of turbo-shaft engine, a combined model of numerical steady-state nonlinear model and ARX dynamic linear model in series is established and used as prediction model. Linear Predictive Controller. Due to the optimization of the controller avoids the nonlinear programming problems, the real-time control system can be guaranteed. The simulation results show that when the rotor load changes, the power turbine speed convergence speed, steady-state high accuracy, small overshoot.