辅助动力装置N-Dot加速控制研究及试车验证  

Research and testing verification of N-Dot acceleration control for an auxiliary power unit

作　　者：杨帆 彭凯[2] 王伟[1] 白洁[1] 赵振宇[1] 毛宁[1] YANG Fan;PENG Kai;WANG Wei;BAI Jie;ZHAO Zhen-yu;MAO Ning(AVIC Xi’an Aeronautics Computing Technique Research Institute,Xi’an 710065,China;School of Power and Energy,Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]航空工业西安航空计算技术研究所,西安710065 [2]西北工业大学动力与能源学院,西安710072

出　　处：《燃气涡轮试验与研究》2020年第3期13-16,共4页Gas Turbine Experiment and Research

基　　金：国家科技重大专项(2017-V-0010-0060,2017-V-0015-0067);民机专项(MJ-2017-D-28)。

摘　　要：在辅助动力装置(APU)全权限数字电子控制系统研制中,为保证同一型号APU加速性能不受APU加工误差、部件性能衰退等的影响,采用基于N-Dot的加速控制方法对APU的过渡态加速控制律进行设计。在控制算法实现过程中,为避免纯微分在实际工作中带来的数值干扰和稳定性问题,对设计的控制回路进行了等效变换,得到了基于纯积分的加速度闭环控制的等价形式。通过台架试车,对基于N-Dot的加速控制律进行验证。试车结果表明,所设计的N-Dot加速控制律能有效防止APU在加速过程中超转、超温,且加速性能一致性良好,能有效发挥其加速性能。During the development of a full authority digital control system(FADEC)for an auxiliary power unit(APU),in order to ensure that the acceleration performance of the APU for the same type are not influenced by engine manufacturing errors and component performance degradation,the N-Dot-based acceleration control method was used to design transient acceleration control law of APU.In the implementing process of the control algorithm,to avoid the problem of numerical interference and stability caused by the pure differential element in practice,the designed control loop was equivalently transformed,and then an equivalent form of closed-loop acceleration control based on pure integral was obtained.Finally,the designed acceleration control law based on N-Dot was verified through the bench test.The test results show that the designed N-Dot acceleration control law can effectively prevent the APU from over-rotation and over-temperature during the acceleration process,and the acceleration performance is consistent and effectively exerted.

关 键 词：航空发动机 辅助动力装置 N-Dot 加速控制律 全权限数字控制系统 台架试车 

分 类 号：V233.7[航空宇航科学与技术—航空宇航推进理论与工程] TP23[自动化与计算机技术—检测技术与自动化装置]