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基于DSP的航空发动机转速传感器设计
徐科, 黄金泉, 张天宏, 蒋文亮
南京航空航天大学能源与动力学院 江苏南京210016
摘要:
提出了一种基于TMS320LF2407ADSP的航空发动机智能转速传感器。设计了转速信号处理电路、显示电路、数字信号处理(DSP)与控制器局域网(CAN)总线接口电路和电源电路。提出采用动态分频技术的转速测量方法,并分析了其在2407ADSP上的实现,提高了转速测量的精度。实验结果表明该智能转速传感器功能强大、实时性好、精度可达0 01%,可应用于航空发动机分布式控制系统中。
关键词:  航空发动机  转速测量  智能传感器  数字信号处理
DOI:
分类号:V232
基金项目:航空科学基金资助(03C52020)。
A speed sensor design based on DSP for aeroengines
XU Ke, HUANG Jin-quan, ZHANG Tian-hong, JIANG Wen-liang
Coll. of Energy and Power Engineering Nanjing Univ. of Aeronautics and Astronautics, Nanjing 210016, China
Abstract:
A smart speed sensor based on DSP for aeroengines was proposed. The speed signal processing circuit, the driving LED circuit, and the interface circuit between DSP and CAN buses were designed. A new speed measurement method by dynamically dividing frequency of speed signal was proposed. The precision of speed measurement was improved. The experiment indicates that the real-time response of the smart speed sensor has satisfactory performance and the relative error of speed measurement is less than 0.01%. The smart speed sensor is suitable for aeroengine distribution control systems.
Key words:  Aircraft engine  Rotating speed measurement  Intelligent sensor  Digital signal processing