【摘要】 <正> 测力实验的精度是风洞流场、模型、天平和数据采集系统各方商质量的综合反映。为突出对风洞设备主要问题的研究,只考虑同期实验的精度问题。假定天平的静态性能(静校结果)已具有通常的指标(精度0.1％),则吹风实验时天平信号的重复性与风洞气流脉动、更多还原

【Abstract】 This paper presents a description lor studying the balance signals with a dynamid method. The optimum active fitter has been developed for the measurement system of the wind tunnel at Beijing University on the basis of simulation using digital filters. The results of the investigation have shown that the accurcy of force measurements can be improved without increasing the running time of the wind tunnel.更多还原