Real-Time High Precision Pulse Width Measurement Based On VxWorks

摘要：

Small Unmanned aerial vehicles commonly use PWM signals for servo control. In order to verify the flight controller design, it is necessary to measure the PWM control signals. There are two difficulties: real-time and high precision. The PWM signal must be measured per 20ms punctually and the pulse width must be accurate to 0.001ms. In this paper, a new pulse width measuring method based on VxWorks and PCI8554 timer card is introduced, including the structure of measurement system, measurement algorithm and VxWorks driver developing techniques of PCI device. By testing, this measurement systems real-time and accuracy performance satisfied UAV test facilities requirements.

关键词： component UAV VxWorks real-time high-precision pulse width measurement

作者: Duan Xiao-jun WU Cheng-fu Chen Huai-Min

作者单位: National Key Laboratory of UAV Special Technology Northwestern Polytechnical University XIAN, Shaanxi, China

会议类型: 国际会议

会议名称: 2011 3rd International Conference on Computer and Automation Engineering(ICCAE 2011)(2011年第三届IEEE计算机与自动化工程国际会议)

会议地点: 重庆

会议语种:英文

页码: 329-331

在线出版日期: 2011-01-21（万方平台首次上网日期，不代表论文的发表时间）