Uncertainty Evaluation of Duration of Aircraft DC Transient Signal Based on Least Square Method

Abstract:

By using the waveform measurements and the least square method, the duration of transient level, and the duration of transient decreasing segment of aircraft DC transient signal are evaluated precisely. The evaluation courses and some technical problems are discussed in detail, the uncertainty analysis both of the durations are presented. Some test results have proved the effectiveness and practicability of the method. It could be applied to the characteristic and performance evaluation of aircraft DC transient signal waveform generators.

• Periodical: Applied Mechanics and Materials (Volumes 599-601)
• Pages: 1801-1806
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.599-601.1801
• Online since: August 2014
• Authors: Pu Zhong Ouyang*, Zhong Hua Zhang, Jing Yu Sun
• Keywords: Aircraft Electric Power Characteristic, Duration, Least-Square Method (LSM), Transient Signal, Uncertainty Evaluation

References

[1] MIL-HDBK-704-2004: Guidance for Test Procedures for Demonstration of Utilization Equipment Compliance to Aircraft Electrical Power Characteristics Part 7: 270 VDC and Part 8: 28VDC).

[2] Liang Zhiguo: The Uncertainty Evaluation of Δt Time Measurement and ΔV Amplitude Measurement of Digital Storage Oscilloscope. Metrology and Measurement Technology, Vol. 31(4) (2011), p.39.

[3] Liang Zhiguo, Sun Jingyu: The Evaluation Methods of Characteristics of Triangle Waveforms Using Least Square Methods. Journal of Scientific Instrument, Vol. 23(3) (2007), p.305.

[4] GJB181A-2003: Aircraft Electric Power Characteristics.