基于切换器的航空动力装置加减速控制方法

Switching Controller Based Method of Aircraft Propulsion Acceleration and Deceleration Control

加减速控制是航空动力装置控制器设计的重点和难点。针对该问题,设计了一种基于切换器的航空动力装置加减速控制方法。在稳态控制器的基础上,分别设计了基于转速加速度和基于油气比的闭环加减速燃油控制算法。在设计中考虑作动器的影响,通过切换器将组合加减速控制规律作为稳态控制规律的限制条件,实现控制规律间的平滑过渡。此外,在控制器中添加了限制保护,防止动力装置在过渡过程中出现超温、超转等异常现象,并使用了抗积分饱和算法。该方法在电子控制器上实现。试验结果表明,该方法能够有效地实现单轴涡轮喷气发动机的加减速控制,控制过程平顺,满足发动机性能要求,具有较强的工程实用性。

Acceleration and deceleration control is the emphasis and difficulty of design of aircraft propulsion control. This paper designs a switching controller based method of acceleration and deceleration control. n·and f close-loop acceleration and deceleration fuel control method is designed based on steady state controller. Actuators are considered in the design. Acceleration and deceleration control law acts as the limitation of steady state control law by switching controller,which provides smooth switching of different control laws. Besides,limit protection and anti-windup strategy are used to prevent over-temperature,over-speeding and other abnormal states. The method is implemented on electronic control unit. Experimental results show that the method can effectively control acceleration and deceleration process of single-spool turbojet engine,meet the engine performance requirements and have strong practicality in engineering.