阻性电子负载卡的设计及其在航空测试中的应用

Design and Application of PCI Resistive Loads in Avionics-Testing

摘要:

阐述了采用PCI接口芯片和FPGA技术研制阻性电子负载卡的方法,重点分析了基于FPGA芯片控制逻辑的实现方法,总结了使用接口芯片开发PCI总线板卡的关键要点和开发驱动软件的步骤;通过在航空测试系统中的实际应用,验证了该PCI阻性电子负载卡的设计能够达到航空修理领域对电阻模拟的实时响应性、准确性的需求。

Abstract:

This article expounds the approach of how to develop a PCI resistive load card based on PCI interface chips and FPGA technology, mainly focusing on the implementation of control logic on FPGA, key points of using PCI interface chips to develop PCI cards and the procedures to develop driver. Actual application of this card which offers guaranteed low resistor tolerance errors of ±1% with a temperature coefficient of 35 ppm/℃ in several avionics testing equipment indicates that the card’s responsivity and veracity can meet the requirements in aviation maintenance field.